openwrt/staging/blogic.git
9 years agoclk: ti: clk-3xxx: Remove unused structures
Stephen Boyd [Wed, 15 Jul 2015 19:04:53 +0000 (12:04 -0700)]
clk: ti: clk-3xxx: Remove unused structures

Sparse complains about these structures missing static, but they
also don't look to be used. Remove them.

drivers/clk/ti/clk-3xxx.c:74:30: warning: symbol 'clkhwops_omap3430es2_ssi_wait' was not declared. Should it be static?
drivers/clk/ti/clk-3xxx.c:157:30: warning: symbol 'clkhwops_omap3430es2_hsotgusb_wait' was not declared. Should it be static?

Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: ti: Mark ti_clk_features static
Stephen Boyd [Wed, 15 Jul 2015 19:03:52 +0000 (12:03 -0700)]
clk: ti: Mark ti_clk_features static

This variable isn't exported outside of this file so mark it
static. Silences the following sparse warning:

drivers/clk/ti/clk.c:36:24: warning: symbol 'ti_clk_features' was not declared. Should it be static?

Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: ti: Check kzalloc() for failures
Stephen Boyd [Wed, 15 Jul 2015 18:55:42 +0000 (11:55 -0700)]
clk: ti: Check kzalloc() for failures

smatch reports a failure to check kzalloc() here:

drivers/clk/ti/clk.c:232
omap2_clk_provider_init() error: potential null dereference 'io'.
(kzalloc returns null)

Check for an allocation failure and return -ENOMEM.

Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoMerge branch 'for-4.2/ti-clk-move' of https://github.com/t-kristo/linux-pm into clk...
Stephen Boyd [Tue, 28 Jul 2015 18:58:26 +0000 (11:58 -0700)]
Merge branch 'for-4.2/ti-clk-move' of https://github.com/t-kristo/linux-pm into clk-next

From Tero Kristo:
  "This pull request contains the TI clock driver set to move the
   clock implementations under clock driver. Some small portions of
   the clock driver code still remain under mach-omap2 after this,
   it should be decided whether this code is now obsolete and should
   be deleted or should someone try to fix it."

Slight merge conflicts with determine_rate prototype changes.

9 years agoclk: h8300: Fix signness bug
Axel Lin [Sat, 20 Jun 2015 07:27:03 +0000 (15:27 +0800)]
clk: h8300: Fix signness bug

of_clk_get_parent_count() may return negative error code, so num_parents
needs to be int rather than unsigned int.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: qcom: Set CLK_SET_RATE_PARENT on ce1 clocks
Stephen Boyd [Tue, 14 Jul 2015 23:57:29 +0000 (16:57 -0700)]
clk: qcom: Set CLK_SET_RATE_PARENT on ce1 clocks

The other ce clocks have the flag set, but ce1 doesn't, so
clk_set_rate() doesn't propagate up the tree to the ce1_src_clk.
Set the flag as this is supported.

Reported-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Tested-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Fixes: 02824653200b ("clk: qcom: Add APQ8084 Global Clock Controller support")
Fixes: d33faa9ead8d ("clk: qcom: Add support for MSM8974's global clock controller (GCC)")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: gpio: Unlock mutex on error path
Stephen Boyd [Tue, 14 Jul 2015 19:45:19 +0000 (12:45 -0700)]
clk: gpio: Unlock mutex on error path

We don't unlock the mutex if we fail to allocate the parent names
array. Unlock it and return an error in this case as well.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Cc: Sergej Sawazki <ce3a@gmx.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: h8300: Use standard Linux I/O accessors
Stephen Boyd [Tue, 14 Jul 2015 00:06:53 +0000 (17:06 -0700)]
clk: h8300: Use standard Linux I/O accessors

There doesn't seem to be any reason why we can't use the standard
readb()/writeb() accessors here because ctrl_inb() and
ctrl_outb() match the generic implementation of readb() and
writeb() that the h8300 architecture uses. This allows us to test
compile this driver on other architectures besides h8300.

Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: h8300: Drop allocation printk and cleanup sizeof style
Stephen Boyd [Mon, 13 Jul 2015 23:54:04 +0000 (16:54 -0700)]
clk: h8300: Drop allocation printk and cleanup sizeof style

We don't need to print an error on allocation failures, drop it.
While we're here, change the sizeof() to be sizeof(*<ptr>) to
make code more future proof.

Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoMerge branch 'clk-determine-rate-struct' into clk-next
Stephen Boyd [Tue, 28 Jul 2015 18:51:30 +0000 (11:51 -0700)]
Merge branch 'clk-determine-rate-struct' into clk-next

* clk-determine-rate-struct:
  clk: fix some determine_rate implementations
  clk: change clk_ops' ->determine_rate() prototype

9 years agoclk: fix some determine_rate implementations
Boris Brezillon [Thu, 9 Jul 2015 20:39:38 +0000 (22:39 +0200)]
clk: fix some determine_rate implementations

Some determine_rate implementations are not returning an error
when they failed to adapt the rate according to the rate request.
Fix them so that they return an error instead of silently
returning 0.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
CC: Jonathan Corbet <corbet@lwn.net>
CC: Tony Lindgren <tony@atomide.com>
CC: Ralf Baechle <ralf@linux-mips.org>
CC: "Emilio López" <emilio@elopez.com.ar>
CC: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Tero Kristo <t-kristo@ti.com>
CC: Peter De Schrijver <pdeschrijver@nvidia.com>
CC: Prashant Gaikwad <pgaikwad@nvidia.com>
CC: Stephen Warren <swarren@wwwdotorg.org>
CC: Thierry Reding <thierry.reding@gmail.com>
CC: Alexandre Courbot <gnurou@gmail.com>
CC: linux-doc@vger.kernel.org
CC: linux-kernel@vger.kernel.org
CC: linux-arm-kernel@lists.infradead.org
CC: linux-omap@vger.kernel.org
CC: linux-mips@linux-mips.org
CC: linux-tegra@vger.kernel.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: change clk_ops' ->determine_rate() prototype
Boris Brezillon [Tue, 7 Jul 2015 18:48:08 +0000 (20:48 +0200)]
clk: change clk_ops' ->determine_rate() prototype

Clock rates are stored in an unsigned long field, but ->determine_rate()
(which returns a rounded rate from a requested one) returns a long
value (errors are reported using negative error codes), which can lead
to long overflow if the clock rate exceed 2Ghz.

Change ->determine_rate() prototype to return 0 or an error code, and pass
a pointer to a clk_rate_request structure containing the expected target
rate and the rate constraints imposed by clk users.

The clk_rate_request structure might be extended in the future to contain
other kind of constraints like the rounding policy, the maximum clock
inaccuracy or other things that are not yet supported by the CCF
(power consumption constraints ?).

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
CC: Jonathan Corbet <corbet@lwn.net>
CC: Tony Lindgren <tony@atomide.com>
CC: Ralf Baechle <ralf@linux-mips.org>
CC: "Emilio López" <emilio@elopez.com.ar>
CC: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
CC: Peter De Schrijver <pdeschrijver@nvidia.com>
CC: Prashant Gaikwad <pgaikwad@nvidia.com>
CC: Stephen Warren <swarren@wwwdotorg.org>
CC: Thierry Reding <thierry.reding@gmail.com>
CC: Alexandre Courbot <gnurou@gmail.com>
CC: linux-doc@vger.kernel.org
CC: linux-kernel@vger.kernel.org
CC: linux-arm-kernel@lists.infradead.org
CC: linux-omap@vger.kernel.org
CC: linux-mips@linux-mips.org
CC: linux-tegra@vger.kernel.org
[sboyd@codeaurora.org: Fix parent dereference problem in
__clk_determine_rate()]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Tested-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
[sboyd@codeaurora.org: Folded in fix from Heiko for fixed-rate
clocks without parents or a rate determining op]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: st: Fix error paths and allocation style
Stephen Boyd [Wed, 8 Jul 2015 01:30:05 +0000 (18:30 -0700)]
clk: st: Fix error paths and allocation style

The error paths in this file leak memory and mappings and test
for pointers being valid after dereferencing them. Fix these
problems and properly free resources on errors. Fix some
stylistic things too like using sizeof(*ptr) and fitting more
code on a single line. Note that we don't unregister clocks here.
That needs a clk_composite_unregister() API that we don't have
right now.

Acked-by: Gabriel Fernandez <gabriel.fernandez@linaro.org>
Cc: Pankaj Dev <pankaj.dev@st.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoMerge branch 'clk-fixes' into clk-next
Stephen Boyd [Wed, 8 Jul 2015 00:10:50 +0000 (17:10 -0700)]
Merge branch 'clk-fixes' into clk-next

* clk-fixes:
  drivers: clk: st: Incorrect register offset used for lock_status

9 years agoclk: Move clk_provider_list to scope of function using it
Stephen Boyd [Mon, 6 Jul 2015 23:50:00 +0000 (16:50 -0700)]
clk: Move clk_provider_list to scope of function using it

The list isn't used after of_clk_init() is called, so we don't
need to keep an empty list around after init. Put the list on the
stack.

Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: Check for allocation errors in of_clk_init()
Stephen Boyd [Mon, 6 Jul 2015 23:48:19 +0000 (16:48 -0700)]
clk: Check for allocation errors in of_clk_init()

Dan Carpenter reports that we don't check the allocation here for
failure. Add a failure check and free any previously allocated
providers from the clk_provider_list.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoMerge branch 'clk-rk3368' into clk-next
Stephen Boyd [Mon, 6 Jul 2015 22:59:33 +0000 (15:59 -0700)]
Merge branch 'clk-rk3368' into clk-next

* clk-rk3368:
  clk: rockchip: add rk3368 clock controller
  clk: rockchip: add missing include guards
  clk: rockchip: add dt-binding header for rk3368
  dt-bindings: add documentation of rk3668 clock controller
  clk: rockchip: define the inverters of rk3066/rk3188 and rk3288
  clk: rockchip: fix issues in the mmc-phase clock
  clk: rockchip: add support for phase inverters
  clk: rockchip: add COMPOSITE_NOGATE_DIVTBL variant
  clk: rockchip: protect register macros against multipart values
  clk: rockchip: fix faulty vip parent name on rk3288
  clk: rockchip: rk3288: add CLK_SET_RATE_PARENT to sclk_mac

9 years agoclk: qcom: Add support for SR2 PLLs
Georgi Djakov [Fri, 12 Jun 2015 08:41:55 +0000 (11:41 +0300)]
clk: qcom: Add support for SR2 PLLs

Add support for SR2 type pll operations. SR2 is optimized for Time Interval
Error (TIE) or absolute jitter.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: at91: Silence warnings and cleanup __init/extern usage
Stephen Boyd [Mon, 6 Jul 2015 19:10:51 +0000 (12:10 -0700)]
clk: at91: Silence warnings and cleanup __init/extern usage

Remove useless ifdefs around function prototypes to silence the
following sparse warnings when the configs aren't enabled.

drivers/clk/at91/clk-h32mx.c:95:13: warning: symbol
'of_sama5d4_clk_h32mx_setup' was not declared. Should it be
static?
drivers/clk/at91/clk-utmi.c:159:13: warning: symbol
'of_at91sam9x5_clk_utmi_setup' was not declared. Should it be
static?

Plus, using __init and extern in function prototypes doesn't do
anything, so just drop it throughout this file.

Acked-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agodrivers: clk: st: Incorrect register offset used for lock_status
Pankaj Dev [Tue, 7 Jul 2015 07:40:50 +0000 (09:40 +0200)]
drivers: clk: st: Incorrect register offset used for lock_status

Incorrect register offset used for sthi407 clockgenC

Signed-off-by: Pankaj Dev <pankaj.dev@st.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org>
Fixes: 51306d56ba81 ("clk: st: STiH407: Support for clockgenC0")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: qcom: Constify the parent names arrays
Georgi Djakov [Mon, 6 Jul 2015 13:51:30 +0000 (16:51 +0300)]
clk: qcom: Constify the parent names arrays

Make const both the array and the strings, so they can be
moved to .rodata section.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: xgene: Delete duplicated name field
Matthias Brugger [Wed, 17 Jun 2015 21:28:49 +0000 (23:28 +0200)]
clk: xgene: Delete duplicated name field

X-Gene clocks implement it's name in the clock private struct.
This is a duplication of the name field. We can delete the field
and rely on the common implementation to retrieve the name.

Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: Rename clk-gpio-gate.c to clk-gpio.c
Sergej Sawazki [Sun, 28 Jun 2015 14:24:56 +0000 (16:24 +0200)]
clk: Rename clk-gpio-gate.c to clk-gpio.c

The file clk-gpio-gate.c does not only contain the gate clock, but also
the mux clock. Rename the file to clk-gpio.c.

Cc: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Sergej Sawazki <ce3a@gmx.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: add gpio controlled clock multiplexer
Sergej Sawazki [Sun, 28 Jun 2015 14:24:55 +0000 (16:24 +0200)]
clk: add gpio controlled clock multiplexer

Add a common clock driver for basic gpio controlled clock multiplexers.
This driver can be used for devices like 5V41068A or 831721I from IDT
or for discrete multiplexer circuits. The 'select' pin selects one of
two parent clocks.

Cc: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Sergej Sawazki <ce3a@gmx.de>
[sboyd@codeaurora.org: Fix error paths to free memory and do it
in the correct order]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: gpio-gate: Stay silent on EPROBE_DEFER
Sergej Sawazki [Sun, 28 Jun 2015 14:24:54 +0000 (16:24 +0200)]
clk: gpio-gate: Stay silent on EPROBE_DEFER

Do not output an error message if requesting gpio failes with EPROBE_DEFER.

Cc: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Sergej Sawazki <ce3a@gmx.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: gpio-gate: Include export.h instead of module.h
Sergej Sawazki [Sun, 28 Jun 2015 14:24:53 +0000 (16:24 +0200)]
clk: gpio-gate: Include export.h instead of module.h

Include export.h for EXPORT_SYMBOL_GPL, no need to include module.h.

Cc: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Sergej Sawazki <ce3a@gmx.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoMerge branch 'clk-fixes' into clk-next
Stephen Boyd [Mon, 6 Jul 2015 22:54:58 +0000 (15:54 -0700)]
Merge branch 'clk-fixes' into clk-next

* clk-fixes:
  clk: mediatek: mt8173: Fix enabling of critical clocks
  drivers: clk: st: Fix mux bit-setting for Cortex A9 clocks
  drivers: clk: st: Add CLK_GET_RATE_NOCACHE flag to clocks
  drivers: clk: st: Fix flexgen lock init
  drivers: clk: st: Fix FSYN channel values
  drivers: clk: st: Remove unused code
  clk: qcom: Use parent rate when set rate to pixel RCG clock
  clk: at91: do not leak resources
  clk: stm32: Fix out-by-one error path in the index lookup
  clk: iproc: fix bit manipulation arithmetic
  clk: iproc: fix memory leak from clock name

9 years agoclk: mediatek: mt8173: Fix enabling of critical clocks
Sascha Hauer [Tue, 30 Jun 2015 02:58:44 +0000 (10:58 +0800)]
clk: mediatek: mt8173: Fix enabling of critical clocks

On the MT8173 the clocks are provided by different units. To enable
the critical clocks we must be sure that all parent clocks are already
registered, otherwise the parents of the critical clocks end up being
unused and get disabled later. To find a place where all parents are
registered we try each time after we've registered some clocks if
all known providers are present now and only then we enable the critical
clocks

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
[sboyd@codeaurora.org: Marked function and data __init]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: rockchip: add rk3368 clock controller
Heiko Stuebner [Sun, 5 Jul 2015 09:00:20 +0000 (11:00 +0200)]
clk: rockchip: add rk3368 clock controller

Describe the clock tree and software resets of the rk3368 ARM64 SoC

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: rockchip: add missing include guards
Heiko Stuebner [Sun, 5 Jul 2015 09:00:19 +0000 (11:00 +0200)]
clk: rockchip: add missing include guards

Review for the rk3368 turned up that the clock header was missing include
guards. This is also true for the already existing clock binding headers,
so add them.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: rockchip: add dt-binding header for rk3368
Heiko Stuebner [Sun, 5 Jul 2015 09:00:18 +0000 (11:00 +0200)]
clk: rockchip: add dt-binding header for rk3368

Add the dt-bindings header for the rk3368, that gets shared between
the clock controller and the clock references in the dts.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agodt-bindings: add documentation of rk3668 clock controller
Heiko Stuebner [Sun, 5 Jul 2015 09:00:17 +0000 (11:00 +0200)]
dt-bindings: add documentation of rk3668 clock controller

Add the devicetree binding for the cru on the rk3368 which quite similar
structured as previous clock controllers.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: rockchip: define the inverters of rk3066/rk3188 and rk3288
Heiko Stuebner [Sun, 5 Jul 2015 09:00:16 +0000 (11:00 +0200)]
clk: rockchip: define the inverters of rk3066/rk3188 and rk3288

Both soc series' have inverters on the hsadc and camera interface clock
paths. So define them using the newly added inverter type.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: rockchip: fix issues in the mmc-phase clock
Heiko Stuebner [Sun, 5 Jul 2015 09:00:15 +0000 (11:00 +0200)]
clk: rockchip: fix issues in the mmc-phase clock

The review for the new inverter clock type uncovered some issues (missing
headers and name handling) that are also present in the mmc-phase clock
type, I got (to much) inspiration from. Fix these there too.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: rockchip: add support for phase inverters
Heiko Stuebner [Sun, 5 Jul 2015 09:00:14 +0000 (11:00 +0200)]
clk: rockchip: add support for phase inverters

Most Rockchip socs have optional phase inverters connected to some
clocks that move the clock-phase by 180 degrees.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
[sboyd@codeaurora.org: Dropped lazy part of commit text]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: rockchip: add COMPOSITE_NOGATE_DIVTBL variant
Heiko Stuebner [Thu, 18 Jun 2015 14:18:31 +0000 (16:18 +0200)]
clk: rockchip: add COMPOSITE_NOGATE_DIVTBL variant

A clock branch consisting of a mux and divider with non-standard
divider values.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: rockchip: protect register macros against multipart values
Heiko Stuebner [Thu, 18 Jun 2015 14:18:30 +0000 (16:18 +0200)]
clk: rockchip: protect register macros against multipart values

The macros calculate the correct offset from the id in the parameter.
If this parameter does not consist of a single number, the calculation
will return wrong registers in the best case or create unaligned accesses
in the worst case. So protect the calculations against such values.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: rockchip: fix faulty vip parent name on rk3288
Heiko Stuebner [Thu, 18 Jun 2015 14:18:29 +0000 (16:18 +0200)]
clk: rockchip: fix faulty vip parent name on rk3288

The video input processor (vip) was called camera interface (cif) on
older socs which seems to have resulted in a copy'n'paste error when
creating the rk3288 camera clocks.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: rockchip: rk3288: add CLK_SET_RATE_PARENT to sclk_mac
Heiko Stuebner [Thu, 18 Jun 2015 14:18:28 +0000 (16:18 +0200)]
clk: rockchip: rk3288: add CLK_SET_RATE_PARENT to sclk_mac

The dwmac ethernet controller on the rk3288 supports phys connected
via rgmii and rmii. With rgmii phys it is expected that the mac clock
is provided externally while with rmii phys the clock can be external
but also generated from the plls. In the later case it of course needs
be at 50MHz, which gets set from the dwmac_rk driver.
As most devices use a rgmii phy it never surfaced so far that the mac
clk mux, doesn't go up one lever to the pll clock in the rmii case with
internal clock generation, as it is missing the CLK_SET_RATE_PARENT flag,
and thus will not set the correct frequency in most cases.

Fixes: b9e4ba541607 ("clk: rockchip: add clock controller for rk3288")
Cc: stable@vger.kernel.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agodrivers: clk: st: Fix mux bit-setting for Cortex A9 clocks
Gabriel Fernandez [Tue, 23 Jun 2015 14:09:25 +0000 (16:09 +0200)]
drivers: clk: st: Fix mux bit-setting for Cortex A9 clocks

This patch fixes the mux bit-setting for ClockgenA9.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org>
Fixes: 13e6f2da1ddf ("clk: st: STiH407: Support for A9 MUX Clocks")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agodrivers: clk: st: Add CLK_GET_RATE_NOCACHE flag to clocks
Pankaj Dev [Tue, 23 Jun 2015 14:09:24 +0000 (16:09 +0200)]
drivers: clk: st: Add CLK_GET_RATE_NOCACHE flag to clocks

Add the CLK_GET_RATE_NOCACHE flag to all the clocks with recalc ops,
so that they reflect Hw rate after CPS wake-up when a clk_get_rate()
is called

Signed-off-by: Pankaj Dev <pankaj.dev@st.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agodrivers: clk: st: Fix flexgen lock init
Giuseppe Cavallaro [Tue, 23 Jun 2015 14:09:23 +0000 (16:09 +0200)]
drivers: clk: st: Fix flexgen lock init

While proving lock, the following warning happens
and it is fixed after initializing lock in the setup
function

INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.10.27-02861-g39df285-dirty #33
[<c00154ac>] (unwind_backtrace+0x0/0xf4) from [<c0011b50>] (show_stack+0x10/0x14)
[<c0011b50>] (show_stack+0x10/0x14) from [<c00689ac>] (__lock_acquire+0x900/0xb14)
[<c00689ac>] (__lock_acquire+0x900/0xb14) from [<c0069394>] (lock_acquire+0x68/0x7c)
[<c0069394>] (lock_acquire+0x68/0x7c) from [<c04958f8>] (_raw_spin_lock_irqsave+0x48/0x5c)
[<c04958f8>] (_raw_spin_lock_irqsave+0x48/0x5c) from [<c0381e6c>] (clk_gate_endisable+0x28/0x88)
[<c0381e6c>] (clk_gate_endisable+0x28/0x88) from [<c0381ee0>] (clk_gate_enable+0xc/0x14)
[<c0381ee0>] (clk_gate_enable+0xc/0x14) from [<c0386c68>] (flexgen_enable+0x28/0x40)
[<c0386c68>] (flexgen_enable+0x28/0x40) from [<c037f260>] (__clk_enable+0x5c/0x9c)
[<c037f260>] (__clk_enable+0x5c/0x9c) from [<c037f558>] (clk_enable+0x18/0x2c)
[<c037f558>] (clk_enable+0x18/0x2c) from [<c064a1dc>] (st_lpc_of_register+0xc0/0x248)
[<c064a1dc>] (st_lpc_of_register+0xc0/0x248) from [<c0649e44>] (clocksource_of_init+0x34/0x58)
[<c0649e44>] (clocksource_of_init+0x34/0x58) from [<c0637ddc>] (sti_timer_init+0x10/0x18)
[<c0637ddc>] (sti_timer_init+0x10/0x18) from [<c06343f8>] (time_init+0x20/0x30)
[<c06343f8>] (time_init+0x20/0x30) from [<c0632984>] (start_kernel+0x20c/0x2e8)
[<c0632984>] (start_kernel+0x20c/0x2e8) from [<40008074>] (0x40008074)

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org>
Fixes: b116517055b7 ("clk: st: STiH407: Support for Flexgen Clocks")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agodrivers: clk: st: Fix FSYN channel values
Gabriel Fernandez [Tue, 23 Jun 2015 14:09:22 +0000 (16:09 +0200)]
drivers: clk: st: Fix FSYN channel values

This patch fixes the value for disabling the FSYN channel clock.
The 'is_enabled' returned value is also fixed.

Signed-off-by: Pankaj Dev <pankaj.dev@st.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agodrivers: clk: st: Remove unused code
Gabriel Fernandez [Tue, 23 Jun 2015 14:09:21 +0000 (16:09 +0200)]
drivers: clk: st: Remove unused code

Remove this duplicated code due to a bad copy / paste.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoclk: qcom: Use parent rate when set rate to pixel RCG clock
Hai Li [Thu, 25 Jun 2015 22:35:33 +0000 (18:35 -0400)]
clk: qcom: Use parent rate when set rate to pixel RCG clock

Since the parent rate has been recalculated, pixel RCG clock
should rely on it to find the correct M/N values during set_rate,
instead of calling __clk_round_rate() to its parent again.

Signed-off-by: Hai Li <hali@codeaurora.org>
Tested-by: Archit Taneja <architt@codeaurora.org>
Fixes: 99cbd064b059 ("clk: qcom: Support display RCG clocks")
[sboyd@codeaurora.org: Silenced unused parent variable warning]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoLinux 4.2-rc1
Linus Torvalds [Sun, 5 Jul 2015 18:01:52 +0000 (11:01 -0700)]
Linux 4.2-rc1

9 years agoMerge tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux...
Linus Torvalds [Sun, 5 Jul 2015 17:54:09 +0000 (10:54 -0700)]
Merge tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86

Pull late x86 platform driver updates from Darren Hart:
 "The following came in a bit later and I wanted them to bake in next a
  few more days before submitting, thus the second pull.

  A new intel_pmc_ipc driver, a symmetrical allocation and free fix in
  dell-laptop, a couple minor fixes, and some updated documentation in
  the dell-laptop comments.

  intel_pmc_ipc:
   - Add Intel Apollo Lake PMC IPC driver

  tc1100-wmi:
   - Delete an unnecessary check before the function call "kfree"

  dell-laptop:
   - Fix allocating & freeing SMI buffer page
   - Show info about WiGig and UWB in debugfs
   - Update information about wireless control"

* tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
  intel_pmc_ipc: Add Intel Apollo Lake PMC IPC driver
  tc1100-wmi: Delete an unnecessary check before the function call "kfree"
  dell-laptop: Fix allocating & freeing SMI buffer page
  dell-laptop: Show info about WiGig and UWB in debugfs
  dell-laptop: Update information about wireless control

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sun, 5 Jul 2015 02:36:06 +0000 (19:36 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

Pull more vfs updates from Al Viro:
 "Assorted VFS fixes and related cleanups (IMO the most interesting in
  that part are f_path-related things and Eric's descriptor-related
  stuff).  UFS regression fixes (it got broken last cycle).  9P fixes.
  fs-cache series, DAX patches, Jan's file_remove_suid() work"

[ I'd say this is much more than "fixes and related cleanups".  The
  file_table locking rule change by Eric Dumazet is a rather big and
  fundamental update even if the patch isn't huge.   - Linus ]

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (49 commits)
  9p: cope with bogus responses from server in p9_client_{read,write}
  p9_client_write(): avoid double p9_free_req()
  9p: forgetting to cancel request on interrupted zero-copy RPC
  dax: bdev_direct_access() may sleep
  block: Add support for DAX reads/writes to block devices
  dax: Use copy_from_iter_nocache
  dax: Add block size note to documentation
  fs/file.c: __fget() and dup2() atomicity rules
  fs/file.c: don't acquire files->file_lock in fd_install()
  fs:super:get_anon_bdev: fix race condition could cause dev exceed its upper limitation
  vfs: avoid creation of inode number 0 in get_next_ino
  namei: make set_root_rcu() return void
  make simple_positive() public
  ufs: use dir_pages instead of ufs_dir_pages()
  pagemap.h: move dir_pages() over there
  remove the pointless include of lglock.h
  fs: cleanup slight list_entry abuse
  xfs: Correctly lock inode when removing suid and file capabilities
  fs: Call security_ops->inode_killpriv on truncate
  fs: Provide function telling whether file_remove_privs() will do anything
  ...

9 years agobluetooth: fix list handling
Linus Torvalds [Sun, 5 Jul 2015 02:11:33 +0000 (19:11 -0700)]
bluetooth: fix list handling

Commit 835a6a2f8603 ("Bluetooth: Stop sabotaging list poisoning")
thought that the code was sabotaging the list poisoning when NULL'ing
out the list pointers and removed it.

But what was going on was that the bluetooth code was using NULL
pointers for the list as a way to mark it empty, and that commit just
broke it (and replaced the test with NULL with a "list_empty()" test on
a uninitialized list instead, breaking things even further).

So fix it all up to use the regular and real list_empty() handling
(which does not use NULL, but a pointer to itself), also making sure to
initialize the list properly (the previous NULL case was initialized
implicitly by the session being allocated with kzalloc())

This is a combination of patches by Marcel Holtmann and Tedd Ho-Jeong
An.

[ I would normally expect to get this through the bt tree, but I'm going
  to release -rc1, so I'm just committing this directly   - Linus ]

Reported-and-tested-by: Jörg Otte <jrg.otte@gmail.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Original-by: Tedd Ho-Jeong An <tedd.an@intel.com>
Original-by: Marcel Holtmann <marcel@holtmann.org>:
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoMerge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target...
Linus Torvalds [Sat, 4 Jul 2015 21:13:43 +0000 (14:13 -0700)]
Merge branch 'for-next' of git://git./linux/kernel/git/nab/target-pending

Pull SCSI target updates from Nicholas Bellinger:
 "It's been a busy development cycle for target-core in a number of
  different areas.

  The fabric API usage for se_node_acl allocation is now within
  target-core code, dropping the external API callers for all fabric
  drivers tree-wide.

  There is a new conversion to RCU hlists for se_node_acl and
  se_portal_group LUN mappings, that turns fast-past LUN lookup into a
  completely lockless code-path.  It also removes the original
  hard-coded limitation of 256 LUNs per fabric endpoint.

  The configfs attributes for backends can now be shared between core
  and driver code, allowing existing drivers to use common code while
  still allowing flexibility for new backend provided attributes.

  The highlights include:

   - Merge sbc_verify_dif_* into common code (sagi)
   - Remove iscsi-target support for obsolete IFMarker/OFMarker
     (Christophe Vu-Brugier)
   - Add bidi support in target/user backend (ilias + vangelis + agover)
   - Move se_node_acl allocation into target-core code (hch)
   - Add crc_t10dif_update common helper (akinobu + mkp)
   - Handle target-core odd SGL mapping for data transfer memory
     (akinobu)
   - Move transport ID handling into target-core (hch)
   - Move task tag into struct se_cmd + support 64-bit tags (bart)
   - Convert se_node_acl->device_list[] to RCU hlist (nab + hch +
     paulmck)
   - Convert se_portal_group->tpg_lun_list[] to RCU hlist (nab + hch +
     paulmck)
   - Simplify target backend driver registration (hch)
   - Consolidate + simplify target backend attribute implementations
     (hch + nab)
   - Subsume se_port + t10_alua_tg_pt_gp_member into se_lun (hch)
   - Drop lun_sep_lock for se_lun->lun_se_dev RCU usage (hch + nab)
   - Drop unnecessary core_tpg_register TFO parameter (nab)
   - Use 64-bit LUNs tree-wide (hannes)
   - Drop left-over TARGET_MAX_LUNS_PER_TRANSPORT limit (hannes)"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (76 commits)
  target: Bump core version to v5.0
  target: remove target_core_configfs.h
  target: remove unused TARGET_CORE_CONFIG_ROOT define
  target: consolidate version defines
  target: implement WRITE_SAME with UNMAP bit using ->execute_unmap
  target: simplify UNMAP handling
  target: replace se_cmd->execute_rw with a protocol_data field
  target/user: Fix inconsistent kmap_atomic/kunmap_atomic
  target: Send UA when changing LUN inventory
  target: Send UA upon LUN RESET tmr completion
  target: Send UA on ALUA target port group change
  target: Convert se_lun->lun_deve_lock to normal spinlock
  target: use 'se_dev_entry' when allocating UAs
  target: Remove 'ua_nacl' pointer from se_ua structure
  target_core_alua: Correct UA handling when switching states
  xen-scsiback: Fix compile warning for 64-bit LUN
  target: Remove TARGET_MAX_LUNS_PER_TRANSPORT
  target: use 64-bit LUNs
  target: Drop duplicate + unused se_dev_check_wce
  target: Drop unnecessary core_tpg_register TFO parameter
  ...

9 years agoMerge tag 'ntb-4.2' of git://github.com/jonmason/ntb
Linus Torvalds [Sat, 4 Jul 2015 21:07:47 +0000 (14:07 -0700)]
Merge tag 'ntb-4.2' of git://github.com/jonmason/ntb

Pull NTB updates from Jon Mason:
 "This includes a pretty significant reworking of the NTB core code, but
  has already produced some significant performance improvements.

  An abstraction layer was added to allow the hardware and clients to be
  easily added.  This required rewriting the NTB transport layer for
  this abstraction layer.  This modification will allow future "high
  performance" NTB clients.

  In addition to this change, a number of performance modifications were
  added.  These changes include NUMA enablement, using CPU memcpy
  instead of asyncdma, and modification of NTB layer MTU size"

* tag 'ntb-4.2' of git://github.com/jonmason/ntb: (22 commits)
  NTB: Add split BAR output for debugfs stats
  NTB: Change WARN_ON_ONCE to pr_warn_once on unsafe
  NTB: Print driver name and version in module init
  NTB: Increase transport MTU to 64k from 16k
  NTB: Rename Intel code names to platform names
  NTB: Default to CPU memcpy for performance
  NTB: Improve performance with write combining
  NTB: Use NUMA memory in Intel driver
  NTB: Use NUMA memory and DMA chan in transport
  NTB: Rate limit ntb_qp_link_work
  NTB: Add tool test client
  NTB: Add ping pong test client
  NTB: Add parameters for Intel SNB B2B addresses
  NTB: Reset transport QP link stats on down
  NTB: Do not advance transport RX on link down
  NTB: Differentiate transport link down messages
  NTB: Check the device ID to set errata flags
  NTB: Enable link for Intel root port mode in probe
  NTB: Read peer info from local SPAD in transport
  NTB: Split ntb_hw_intel and ntb_transport drivers
  ...

9 years ago9p: cope with bogus responses from server in p9_client_{read,write}
Al Viro [Sat, 4 Jul 2015 20:17:39 +0000 (16:17 -0400)]
9p: cope with bogus responses from server in p9_client_{read,write}

if server claims to have written/read more than we'd told it to,
warn and cap the claimed byte count to avoid advancing more than
we are ready to.

9 years agop9_client_write(): avoid double p9_free_req()
Al Viro [Sat, 4 Jul 2015 20:11:05 +0000 (16:11 -0400)]
p9_client_write(): avoid double p9_free_req()

Braino in "9p: switch p9_client_write() to passing it struct iov_iter *";
if response is impossible to parse and we discard the request, get the
out of the loop right there.

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years ago9p: forgetting to cancel request on interrupted zero-copy RPC
Al Viro [Sat, 4 Jul 2015 20:04:19 +0000 (16:04 -0400)]
9p: forgetting to cancel request on interrupted zero-copy RPC

If we'd already sent a request and decide to abort it, we *must*
issue TFLUSH properly and not just blindly reuse the tag, or
we'll get seriously screwed when response eventually arrives
and we confuse it for response to later request that had reused
the same tag.

Cc: stable@vger.kernel.org # v3.2 and later
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agodax: bdev_direct_access() may sleep
Matthew Wilcox [Fri, 3 Jul 2015 14:40:43 +0000 (10:40 -0400)]
dax: bdev_direct_access() may sleep

The brd driver is the only in-tree driver that may sleep currently.
After some discussion on linux-fsdevel, we decided that any driver
may choose to sleep in its ->direct_access method.  To ensure that all
callers of bdev_direct_access() are prepared for this, add a call
to might_sleep().

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agoblock: Add support for DAX reads/writes to block devices
Matthew Wilcox [Fri, 3 Jul 2015 14:40:42 +0000 (10:40 -0400)]
block: Add support for DAX reads/writes to block devices

If a block device supports the ->direct_access methods, bypass the normal
DIO path and use DAX to go straight to memcpy() instead of allocating
a DIO and a BIO.

Includes support for the DIO_SKIP_DIO_COUNT flag in DAX, as is done in
do_blockdev_direct_IO().

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agodax: Use copy_from_iter_nocache
Matthew Wilcox [Fri, 3 Jul 2015 14:40:39 +0000 (10:40 -0400)]
dax: Use copy_from_iter_nocache

When userspace does a write, there's no need for the written data to
pollute the CPU cache.  This matches the original XIP code.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agodax: Add block size note to documentation
Matthew Wilcox [Fri, 3 Jul 2015 14:40:38 +0000 (10:40 -0400)]
dax: Add block size note to documentation

For block devices which are small enough, mkfs will default to creating
a filesystem with block sizes smaller than page size.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 4 Jul 2015 18:29:59 +0000 (11:29 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "Except for the preempt notifiers fix, these are all small bugfixes
  that could have been waited for -rc2.  Sending them now since I was
  taking care of Peter's patch anyway"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: add hyper-v crash msrs values
  KVM: x86: remove data variable from kvm_get_msr_common
  KVM: s390: virtio-ccw: don't overwrite config space values
  KVM: x86: keep track of LVT0 changes under APICv
  KVM: x86: properly restore LVT0
  KVM: x86: make vapics_in_nmi_mode atomic
  sched, preempt_notifier: separate notifier registration from static_key inc/dec

9 years agoNTB: Add split BAR output for debugfs stats
Dave Jiang [Thu, 18 Jun 2015 09:17:30 +0000 (05:17 -0400)]
NTB: Add split BAR output for debugfs stats

When split BAR is enabled, the driver needs to dump out the split BAR
registers rather than the original 64bit BAR registers.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Change WARN_ON_ONCE to pr_warn_once on unsafe
Dave Jiang [Mon, 15 Jun 2015 12:22:30 +0000 (08:22 -0400)]
NTB: Change WARN_ON_ONCE to pr_warn_once on unsafe

The unsafe doorbell and scratchpad access should display reason when
WARN is called.  Otherwise we get a stack dump without any explanation.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Print driver name and version in module init
Dave Jiang [Mon, 15 Jun 2015 12:21:33 +0000 (08:21 -0400)]
NTB: Print driver name and version in module init

Printouts driver name and version to indicate what is being loaded.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Increase transport MTU to 64k from 16k
Dave Jiang [Wed, 3 Jun 2015 15:29:38 +0000 (11:29 -0400)]
NTB: Increase transport MTU to 64k from 16k

Benchmarking showed a significant performance increase with the MTU size
to 64k instead of 16k.  Change the driver default to 64k.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Rename Intel code names to platform names
Dave Jiang [Wed, 20 May 2015 16:55:47 +0000 (12:55 -0400)]
NTB: Rename Intel code names to platform names

Instead of using the platform code names, use the correct platform names
to identify the respective Intel NTB hardware.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Default to CPU memcpy for performance
Dave Jiang [Tue, 19 May 2015 20:52:04 +0000 (16:52 -0400)]
NTB: Default to CPU memcpy for performance

Disable DMA usage by default, since the CPU provides much better
performance with write combining.  Provide a module parameter to enable
DMA usage when offloading the memcpy is preferred.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Improve performance with write combining
Dave Jiang [Tue, 19 May 2015 20:45:46 +0000 (16:45 -0400)]
NTB: Improve performance with write combining

Changing the memory window BAR mappings to write combining significantly
boosts the performance.  We will also use memcpy that uses non-temporal
store, which showed performance improvement when doing non-cached
memcpys.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Use NUMA memory in Intel driver
Allen Hubbe [Tue, 19 May 2015 16:04:52 +0000 (12:04 -0400)]
NTB: Use NUMA memory in Intel driver

Allocate memory for the NUMA node of the NTB device.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Use NUMA memory and DMA chan in transport
Allen Hubbe [Mon, 18 May 2015 10:20:47 +0000 (06:20 -0400)]
NTB: Use NUMA memory and DMA chan in transport

Allocate memory and request the DMA channel for the same NUMA node as
the NTB device.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Rate limit ntb_qp_link_work
Allen Hubbe [Mon, 11 May 2015 14:08:26 +0000 (10:08 -0400)]
NTB: Rate limit ntb_qp_link_work

When the ntb transport is connecting and waiting for the peer, the debug
console receives lots of debug level messages about the remote qp link
status being down.  Rate limit those messages.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Add tool test client
Allen Hubbe [Thu, 21 May 2015 06:51:39 +0000 (02:51 -0400)]
NTB: Add tool test client

This is a simple debugging driver that enables the doorbell and
scratch pad registers to be read and written from the debugfs.  This
tool enables more complicated debugging to be scripted from user space.
This driver may be used to test that your ntb hardware and drivers are
functioning at a basic level.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Add ping pong test client
Allen Hubbe [Wed, 15 Apr 2015 15:12:41 +0000 (11:12 -0400)]
NTB: Add ping pong test client

This is a simple ping pong driver that exercises the scratch pads and
doorbells of the ntb hardware.  This driver may be used to test that
your ntb hardware and drivers are functioning at a basic level.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Add parameters for Intel SNB B2B addresses
Allen Hubbe [Mon, 11 May 2015 09:45:30 +0000 (05:45 -0400)]
NTB: Add parameters for Intel SNB B2B addresses

Add module parameters for the addresses to be used in B2B topology.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Reset transport QP link stats on down
Allen Hubbe [Tue, 12 May 2015 12:09:15 +0000 (08:09 -0400)]
NTB: Reset transport QP link stats on down

Reset the link stats when the link goes down.  In particular, the TX and
RX index and count must be reset, or else the TX side will be sending
packets to the RX side where the RX side is not expecting them.  Reset
all the stats, to be consistent.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Do not advance transport RX on link down
Allen Hubbe [Tue, 12 May 2015 10:24:27 +0000 (06:24 -0400)]
NTB: Do not advance transport RX on link down

On link down, don't advance RX index to the next entry.  The next entry
should never be valid after receiving the link down flag.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Differentiate transport link down messages
Allen Hubbe [Tue, 12 May 2015 10:55:44 +0000 (06:55 -0400)]
NTB: Differentiate transport link down messages

The same message "qp %d: Link Down\n" was printed at two locations in
ntb_transport.  Change the messages so they are distinct.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Check the device ID to set errata flags
Dave Jiang [Fri, 8 May 2015 16:24:40 +0000 (12:24 -0400)]
NTB: Check the device ID to set errata flags

Set errata flags for the specific device IDs to which they apply,
instead of the whole Xeon hardware class.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Enable link for Intel root port mode in probe
Dave Jiang [Tue, 19 May 2015 20:59:34 +0000 (16:59 -0400)]
NTB: Enable link for Intel root port mode in probe

Link training should be enabled in the driver probe for root port mode.
We should not have to wait for transport to be loaded for this to
happen.  Otherwise the ntb device will not show up on the transparent
bridge side of the link.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Read peer info from local SPAD in transport
Dave Jiang [Tue, 2 Jun 2015 07:45:07 +0000 (03:45 -0400)]
NTB: Read peer info from local SPAD in transport

The transport was writing and then reading the peer scratch pad,
essentially reading what it just wrote instead of exchanging any
information with the peer.  The transport expects the peer values to be
the same as the local values, so this issue was not obvious.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Split ntb_hw_intel and ntb_transport drivers
Allen Hubbe [Thu, 9 Apr 2015 14:33:20 +0000 (10:33 -0400)]
NTB: Split ntb_hw_intel and ntb_transport drivers

Change ntb_hw_intel to use the new NTB hardware abstraction layer.

Split ntb_transport into its own driver.  Change it to use the new NTB
hardware abstraction layer.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Add NTB hardware abstraction layer
Allen Hubbe [Thu, 9 Apr 2015 14:33:20 +0000 (10:33 -0400)]
NTB: Add NTB hardware abstraction layer

Abstract the NTB device behind a programming interface, so that it can
support different hardware and client drivers.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 4 Jul 2015 16:22:51 +0000 (09:22 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq update from Thomas Gleixner:
 "The last update for 4.2 is just moving a macro from a local header to
  the global one, so it can be used in architecture code as well.

  Cleanup of the now empty local header is 4.3 material"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip: Move IRQCHIP_DECLARE macro to include/linux/irqchip.h

9 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 4 Jul 2015 15:58:50 +0000 (08:58 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Two FPU rewrite related fixes.  This addresses all known x86
  regressions at this stage.  Also some other misc fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu: Fix boot crash in the early FPU code
  x86/asm/entry/64: Update path names
  x86/fpu: Fix FPU related boot regression when CPUID masking BIOS feature is enabled
  x86/boot/setup: Clean up the e820_reserve_setup_data() code
  x86/kaslr: Fix typo in the KASLR_FLAG documentation

9 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 4 Jul 2015 15:56:53 +0000 (08:56 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Debug info and other statistics fixes and related enhancements"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/numa: Fix numa balancing stats in /proc/pid/sched
  sched/numa: Show numa_group ID in /proc/sched_debug task listings
  sched/debug: Move print_cfs_rq() declaration to kernel/sched/sched.h
  sched/stat: Expose /proc/pid/schedstat if CONFIG_SCHED_INFO=y
  sched/stat: Simplify the sched_info accounting dependency

9 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 4 Jul 2015 15:17:29 +0000 (08:17 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf updates from Ingo Molnar:
 "This tree includes an x86 PMU scheduling fix, but most changes are
  late breaking tooling fixes and updates:

  User visible fixes:

   - Create config.detected into OUTPUT directory, fixing parallel
     builds sharing the same source directory (Aaro Kiskinen)

   - Allow to specify custom linker command, fixing some MIPS64 builds.
     (Aaro Kiskinen)

   - Fix to show proper convergence stats in 'perf bench numa' (Srikar
     Dronamraju)

  User visible changes:

   - Validate syscall list passed via -e argument to 'perf trace'.
     (Arnaldo Carvalho de Melo)

   - Introduce 'perf stat --per-thread' (Jiri Olsa)

   - Check access permission for --kallsyms and --vmlinux (Li Zhang)

   - Move toggling event logic from 'perf top' and into hists browser,
     allowing freeze/unfreeze with event lists with more than one entry
     (Namhyung Kim)

   - Add missing newlines when dumping PERF_RECORD_FINISHED_ROUND and
     showing the Aggregated stats in 'perf report -D' (Adrian Hunter)

  Infrastructure fixes:

   - Add missing break for PERF_RECORD_ITRACE_START, which caused those
     events samples to be parsed as well as PERF_RECORD_LOST_SAMPLES.
     ITRACE_START only appears when Intel PT or BTS are present, so..
     (Jiri Olsa)

   - Call the perf_session destructor when bailing out in the inject,
     kmem, report, kvm and mem tools (Taeung Song)

  Infrastructure changes:

   - Move stuff out of 'perf stat' and into the lib for further use
     (Jiri Olsa)

   - Reference count the cpu_map and thread_map classes (Jiri Olsa)

   - Set evsel->{cpus,threads} from the evlist, if not set, allowing the
     generalization of some 'perf stat' functions that previously were
     accessing private static evlist variable (Jiri Olsa)

   - Delete an unnecessary check before the calling free_event_desc()
     (Markus Elfring)

   - Allow auxtrace data alignment (Adrian Hunter)

   - Allow events with dot (Andi Kleen)

   - Fix failure to 'perf probe' events on arm (He Kuang)

   - Add testing for Makefile.perf (Jiri Olsa)

   - Add test for make install with prefix (Jiri Olsa)

   - Fix single target build dependency check (Jiri Olsa)

   - Access thread_map entries via accessors, prep patch to hold more
     info per entry, for ongoing 'perf stat --per-thread' work (Jiri
     Olsa)

   - Use __weak definition from compiler.h (Sukadev Bhattiprolu)

   - Split perf_pmu__new_alias() (Sukadev Bhattiprolu)"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
  perf tools: Allow to specify custom linker command
  perf tools: Create config.detected into OUTPUT directory
  perf mem: Fill in the missing session freeing after an error occurs
  perf kvm: Fill in the missing session freeing after an error occurs
  perf report: Fill in the missing session freeing after an error occurs
  perf kmem: Fill in the missing session freeing after an error occurs
  perf inject: Fill in the missing session freeing after an error occurs
  perf tools: Add missing break for PERF_RECORD_ITRACE_START
  perf/x86: Fix 'active_events' imbalance
  perf symbols: Check access permission when reading symbol files
  perf stat: Introduce --per-thread option
  perf stat: Introduce print_counters function
  perf stat: Using init_stats instead of memset
  perf stat: Rename print_interval to process_interval
  perf stat: Remove perf_evsel__read_cb function
  perf stat: Move perf_stat initialization counter process code
  perf stat: Move zero_per_pkg into counter process code
  perf stat: Separate counters reading and processing
  perf stat: Introduce read_counters function
  perf stat: Introduce perf_evsel__read function
  ...

9 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 4 Jul 2015 15:16:41 +0000 (08:16 -0700)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull max log buf size increase from Ingo Molnar:
 "Ran into this limit recently, so increase it by an order of magnitude"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  printk: Increase maximum CONFIG_LOG_BUF_SHIFT from 21 to 25

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Sat, 4 Jul 2015 15:14:22 +0000 (08:14 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull second round of input updates from Dmitry Torokhov:
 "A new driver for Weida wdt87xx touch controllers, and a bunch of
  fixups for other drivers"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: wdt87xx_i2c - add a scaling factor for TOUCH_MAJOR event
  Input: wdt87xx_i2c - remove stray newline in diagnostic message
  Input: arc_ps2 - add HAS_IOMEM dependency
  Input: wdt87xx_i2c - fix format warning
  Input: improve parsing OF parameters for touchscreens
  Input: edt-ft5x06 - mark as direct input device
  Input: use for_each_set_bit() where appropriate
  Input: add a driver for wdt87xx touchscreen controller
  Input: axp20x-pek - fix reporting button state as inverted
  Input: xpad - re-send LED command on present event
  Input: xpad - set the LEDs properly on XBox Wireless controllers
  Input: imx_keypad - check for clk_prepare_enable() error

9 years agox86/fpu: Fix boot crash in the early FPU code
Ingo Molnar [Sat, 4 Jul 2015 07:58:19 +0000 (09:58 +0200)]
x86/fpu: Fix boot crash in the early FPU code

Jan Kara and Thomas Gleixner reported boot crashes in the FPU
code:

  general protection fault: 0000 [#1] SMP
  RIP: 0010:[<ffffffff81048a6c>]  [<ffffffff81048a6c>] mxcsr_feature_mask_init+0x1c/0x40

  2b:*  0f ae 85 00 fe ff ff    fxsave -0x200(%rbp)

and bisected it down to the following FPU commit:

   91a8c2a5b43f ("x86/fpu: Clean up and fix MXCSR handling")

The reason is that the on-stack FPU registers state variable,
used by the FXSAVE instruction, did not have the required
minimum alignment of 16 bytes, causing the general protection
fault.

This is most likely a GCC bug in older GCC versions, but the
offending commit also added a bogus extra 32-byte alignment
(which GCC ignored too).

So fix this bug by making the variable static again, but also
mark it __initdata this time, because fpu__init_system_mxcsr()
is now an __init function.

Reported-and-bisected-by: Jan Kara <jack@suse.cz>
Reported-bisected-and-tested-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20150704075819.GA9201@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agosched/numa: Fix numa balancing stats in /proc/pid/sched
Srikar Dronamraju [Thu, 25 Jun 2015 17:21:43 +0000 (22:51 +0530)]
sched/numa: Fix numa balancing stats in /proc/pid/sched

Commit 44dba3d5d6a1 ("sched: Refactor task_struct to use
numa_faults instead of numa_* pointers") modified the way
tsk->numa_faults stats are accounted.

However that commit never touched show_numa_stats() that is displayed
in /proc/pid/sched and thus the numbers displayed in /proc/pid/sched
don't match the actual numbers.

Fix it by making sure that /proc/pid/sched reflects the task
fault numbers. Also add group fault stats too.

Also couple of more modifications are added here:

1. Format changes:

  - Previously we would list two entries per node, one for private
    and one for shared. Also the home node info was listed in each entry.

  - Now preferred node, total_faults and current node are
    displayed separately.

  - Now there is one entry per node, that lists private,shared task and
    group faults.

2. Unit changes:

  - p->numa_pages_migrated was getting reset after every read of
    /proc/pid/sched. It's more useful to have absolute numbers since
    differential migrations between two accesses can be more easily
    calculated.

Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Iulia Manda <iulia.manda21@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1435252903-1081-4-git-send-email-srikar@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agosched/numa: Show numa_group ID in /proc/sched_debug task listings
Srikar Dronamraju [Thu, 25 Jun 2015 17:21:42 +0000 (22:51 +0530)]
sched/numa: Show numa_group ID in /proc/sched_debug task listings

Having the numa group ID in /proc/sched_debug helps to see how
the numa groups have spread across the system.

Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Iulia Manda <iulia.manda21@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1435252903-1081-3-git-send-email-srikar@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agosched/debug: Move print_cfs_rq() declaration to kernel/sched/sched.h
Srikar Dronamraju [Thu, 25 Jun 2015 17:21:41 +0000 (22:51 +0530)]
sched/debug: Move print_cfs_rq() declaration to kernel/sched/sched.h

Currently print_cfs_rq() is declared in include/linux/sched.h.
However it's not used outside kernel/sched. Hence move the
declaration to kernel/sched/sched.h

Also some functions are only available for CONFIG_SCHED_DEBUG=y.
Hence move the declarations to within the #ifdef.

Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Iulia Manda <iulia.manda21@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1435252903-1081-2-git-send-email-srikar@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agosched/stat: Expose /proc/pid/schedstat if CONFIG_SCHED_INFO=y
Naveen N. Rao [Tue, 30 Jun 2015 09:06:03 +0000 (14:36 +0530)]
sched/stat: Expose /proc/pid/schedstat if CONFIG_SCHED_INFO=y

Expand /proc/pid/schedstat output:

 - enable it on CONFIG_TASK_DELAY_ACCT=y && !CONFIG_SCHEDSTATS kernels.

 - dump all zeroes on kernels that are booted with the 'nodelayacct'
   option, which boot option disables delay accounting on
   CONFIG_TASK_DELAY_ACCT=y kernels.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: a.p.zijlstra@chello.nl
Cc: ricklind@us.ibm.com
Link: http://lkml.kernel.org/r/5ccbef17d4bc841084ea6e6421d4e4a23b7b806f.1435654789.git.naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agosched/stat: Simplify the sched_info accounting dependency
Naveen N. Rao [Thu, 25 Jun 2015 18:23:37 +0000 (23:53 +0530)]
sched/stat: Simplify the sched_info accounting dependency

Both CONFIG_SCHEDSTATS=y and CONFIG_TASK_DELAY_ACCT=y track task
sched_info, which results in ugly #if clauses.

Simplify the code by introducing a synthethic CONFIG_SCHED_INFO
switch, selected by both.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: a.p.zijlstra@chello.nl
Cc: ricklind@us.ibm.com
Link: http://lkml.kernel.org/r/8d19eef800811a94b0f91bcbeb27430a884d7433.1435255405.git.naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agoMerge branch 'next' into for-linus
Dmitry Torokhov [Sat, 4 Jul 2015 06:56:31 +0000 (23:56 -0700)]
Merge branch 'next' into for-linus

Prepare second round of input updates for 4.2 merge window.

9 years agoMerge tag 'topic/drm-fixes-2015-07-04' of git://anongit.freedesktop.org/drm-intel
Linus Torvalds [Fri, 3 Jul 2015 23:09:29 +0000 (16:09 -0700)]
Merge tag 'topic/drm-fixes-2015-07-04' of git://anongit.freedesktop.org/drm-intel

Pull drm EDID fix from Daniel Vetter:
 "Since Dave is enjoying vacation I figured I'll send you this drm core
  fix directly"

* tag 'topic/drm-fixes-2015-07-04' of git://anongit.freedesktop.org/drm-intel:
  drm/crtc: Fix edid length computation

9 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Fri, 3 Jul 2015 23:02:25 +0000 (16:02 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull virtio/vhost cross endian support from Michael Tsirkin:
 "I have just queued some more bugfix patches today but none fix
  regressions and none are related to these ones, so it looks like a
  good time for a merge for -rc1.

  The motivation for this is support for legacy BE guests on the new LE
  hosts.  There are two redeeming properties that made me merge this:

   - It's a trivial amount of code: since we wrap host/guest accesses
     anyway, almost all of it is well hidden from drivers.

   - Sane platforms would never set flags like VHOST_CROSS_ENDIAN_LEGACY,
     and when it's clear, there's zero overhead (as some point it was
     tested by compiling with and without the patches, got the same
     stripped binary).

  Maybe we could create a Kconfig symbol to enforce the second point:
  prevent people from enabling it eg on x86.  I will look into this"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio-pci: alloc only resources actually used.
  macvtap/tun: cross-endian support for little-endian hosts
  vhost: cross-endian support for legacy devices
  virtio: add explicit big-endian support to memory accessors
  vhost: introduce vhost_is_little_endian() helper
  vringh: introduce vringh_is_little_endian() helper
  macvtap: introduce macvtap_is_little_endian() helper
  tun: add tun_is_little_endian() helper
  virtio: introduce virtio_is_little_endian() helper

9 years agodrm/crtc: Fix edid length computation
Shixin Zeng [Fri, 3 Jul 2015 06:46:50 +0000 (08:46 +0200)]
drm/crtc: Fix edid length computation

The length of each EDID block is EDID_LENGTH, and number of blocks is
(1 + edid->extensions) - we need to multiply not add them.

This causes wrong EDID to be passed on, and is a regression introduced
by d2ed34362a52 (drm: Introduce helper for replacing blob properties)

Signed-off-by: Shixin Zeng <zeng.shixin@gmail.com>
Cc: Daniel Stone <daniels@collabora.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
[danvet: Add Cc: and fix commit summary.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm...
Linus Torvalds [Fri, 3 Jul 2015 22:20:57 +0000 (15:20 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ebiederm/user-namespace

Pull user namespace updates from Eric Biederman:
 "Long ago and far away when user namespaces where young it was realized
  that allowing fresh mounts of proc and sysfs with only user namespace
  permissions could violate the basic rule that only root gets to decide
  if proc or sysfs should be mounted at all.

  Some hacks were put in place to reduce the worst of the damage could
  be done, and the common sense rule was adopted that fresh mounts of
  proc and sysfs should allow no more than bind mounts of proc and
  sysfs.  Unfortunately that rule has not been fully enforced.

  There are two kinds of gaps in that enforcement.  Only filesystems
  mounted on empty directories of proc and sysfs should be ignored but
  the test for empty directories was insufficient.  So in my tree
  directories on proc, sysctl and sysfs that will always be empty are
  created specially.  Every other technique is imperfect as an ordinary
  directory can have entries added even after a readdir returns and
  shows that the directory is empty.  Special creation of directories
  for mount points makes the code in the kernel a smidge clearer about
  it's purpose.  I asked container developers from the various container
  projects to help test this and no holes were found in the set of mount
  points on proc and sysfs that are created specially.

  This set of changes also starts enforcing the mount flags of fresh
  mounts of proc and sysfs are consistent with the existing mount of
  proc and sysfs.  I expected this to be the boring part of the work but
  unfortunately unprivileged userspace winds up mounting fresh copies of
  proc and sysfs with noexec and nosuid clear when root set those flags
  on the previous mount of proc and sysfs.  So for now only the atime,
  read-only and nodev attributes which userspace happens to keep
  consistent are enforced.  Dealing with the noexec and nosuid
  attributes remains for another time.

  This set of changes also addresses an issue with how open file
  descriptors from /proc/<pid>/ns/* are displayed.  Recently readlink of
  /proc/<pid>/fd has been triggering a WARN_ON that has not been
  meaningful since it was added (as all of the code in the kernel was
  converted) and is not now actively wrong.

  There is also a short list of issues that have not been fixed yet that
  I will mention briefly.

  It is possible to rename a directory from below to above a bind mount.
  At which point any directory pointers below the renamed directory can
  be walked up to the root directory of the filesystem.  With user
  namespaces enabled a bind mount of the bind mount can be created
  allowing the user to pick a directory whose children they can rename
  to outside of the bind mount.  This is challenging to fix and doubly
  so because all obvious solutions must touch code that is in the
  performance part of pathname resolution.

  As mentioned above there is also a question of how to ensure that
  developers by accident or with purpose do not introduce exectuable
  files on sysfs and proc and in doing so introduce security regressions
  in the current userspace that will not be immediately obvious and as
  such are likely to require breaking userspace in painful ways once
  they are recognized"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  vfs: Remove incorrect debugging WARN in prepend_path
  mnt: Update fs_fully_visible to test for permanently empty directories
  sysfs: Create mountpoints with sysfs_create_mount_point
  sysfs: Add support for permanently empty directories to serve as mount points.
  kernfs: Add support for always empty directories.
  proc: Allow creating permanently empty directories that serve as mount points
  sysctl: Allow creating permanently empty directories that serve as mountpoints.
  fs: Add helper functions for permanently empty directories.
  vfs: Ignore unlocked mounts in fs_fully_visible
  mnt: Modify fs_fully_visible to deal with locked ro nodev and atime
  mnt: Refactor the logic for mounting sysfs and proc in a user namespace

9 years agoMerge tag 'remoteproc-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad...
Linus Torvalds [Fri, 3 Jul 2015 21:57:50 +0000 (14:57 -0700)]
Merge tag 'remoteproc-4.2' of git://git./linux/kernel/git/ohad/remoteproc

Pull remoteproc updates from Ohad Ben-Cohen:

 - remoteproc fixes/cleanups from Suman Anna

 - new remoteproc TI Wakeup M3 driver from Dave Gerlach

 - remoteproc core support for TI's Wakeup M3 driver from both Dave and Suman

 - tiny remoteproc build fix from myself

* tag 'remoteproc-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc:
  remoteproc: fix !CONFIG_OF build breakage
  remoteproc/wkup_m3: add a remoteproc driver for TI Wakeup M3
  Documentation: dt: add bindings for TI Wakeup M3 processor
  remoteproc: add a rproc ops for performing address translation
  remoteproc: introduce rproc_get_by_phandle API
  remoteproc: fix various checkpatch warnings
  remoteproc/davinci: fix quoted split string checkpatch warning
  remoteproc/ste: add blank lines after declarations

9 years agoMerge tag 'hwspinlock-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad...
Linus Torvalds [Fri, 3 Jul 2015 21:52:25 +0000 (14:52 -0700)]
Merge tag 'hwspinlock-4.2' of git://git./linux/kernel/git/ohad/hwspinlock

Pull hwspinlock updates from Ohad Ben-Cohen:

 - hwspinlock core DT support from Suman Anna

 - OMAP hwspinlock DT support from Suman Anna

 - QCOM hwspinlock DT support from Bjorn Andersson

 - a new CSR atlas7 hwspinlock driver from Wei Chen

 - CSR atlas7 hwspinlock DT binding document from Wei Chen

 - a tiny QCOM hwspinlock driver fix from Bjorn Andersson

* tag 'hwspinlock-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/hwspinlock:
  hwspinlock: qcom: Correct msb in regmap_field
  DT: hwspinlock: add the CSR atlas7 hwspinlock bindings document
  hwspinlock: add a CSR atlas7 driver
  hwspinlock: qcom: Add support for Qualcomm HW Mutex block
  DT: hwspinlock: Add binding documentation for Qualcomm hwmutex
  hwspinlock/omap: add support for dt nodes
  Documentation: dt: add the omap hwspinlock bindings document
  hwspinlock/core: add device tree support
  Documentation: dt: add common bindings for hwspinlock

9 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 3 Jul 2015 19:28:30 +0000 (12:28 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes (and cleanups) from Catalin Marinas:
 "Various arm64 fixes:

   - suspicious RCU usage warning
   - BPF (out of bounds array read and endianness conversion)
   - perf (of_node usage after of_node_put, cpu_pmu->plat_device
     assignment)
   - huge pmd/pud check for value 0
   - rate-limiting should only take unhandled signals into account

  Clean-up:

   - incorrect use of pgprot_t type
   - unused header include
   - __init annotation to arm_cpuidle_init
   - pr_debug instead of pr_error for disabled GICC entries in
     ACPI/MADT"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: Fix show_unhandled_signal_ratelimited usage
  ARM64 / SMP: Switch pr_err() to pr_debug() for disabled GICC entry
  arm64: cpuidle: add __init section marker to arm_cpuidle_init
  arm64: Don't report clear pmds and puds as huge
  arm64: perf: fix unassigned cpu_pmu->plat_device when probing PMU PPIs
  arm64: perf: Don't use of_node after putting it
  arm64: fix incorrect use of pgprot_t variable
  arm64/hw_breakpoint.c: remove unnecessary header
  arm64: bpf: fix endianness conversion bugs
  arm64: bpf: fix out-of-bounds read in bpf2a64_offset()
  ARM64: smp: Fix suspicious RCU usage with ipi tracepoints