staging: drm/imx: add drm plane support

This patch adds support for a drm overlay plane on DI0 using the DP.
In principle, the overlay plane could also be used on DI1, but to switch
the overlay plane between display interfaces, the base planes would have
to be exchanged transparently while both display interfaces are inactive.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: drm/imx: fix pageflip events during device close

During a device close the drm core frees all pending events in
drm_events_release(). If at that time a pageflip is pending the
interrupt handler will try to complete the now unitialized
event resulting in a NULL pointer exception. Seen on imx-drm
when userspace is killed during a page flip.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: drm/imx: ipuv3-crtc: remove unused struct ipu_framebuffer

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: drm-imx: add DRM_FORMAT_BGR888 to ipu crtc driver

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: drm/imx: make waiting for idle channel optional

Currently we wait for a channel until it's idle before actually
disabling it. This is not needed for all channels though, so make
waiting for idle a separate function and call it where necessary.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: drm/imx: Add 24-bit BGR support to DC

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: drm/imx: add BGR565 format

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: drm/imx: fix RGB formats, make ipu_cpmem_set_fmt take a drm_fourcc

The drm fourccs define formats not available as video4linux pixel formats,
such as DRM_FORMAT_BGR565, or the DRM_FORMAT_RGBX/BGRX variants.
Also, contrary to the v4l2 formats, the drm formats are well defined.

This patch also fixes the BGRA32 and RGB/RGB24 internal formats to use a
common internal representation.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: drm/imx: make struct ipu_rgb format definitions const

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: drm/imx: also allow to allocate only 2 DMFC slots for DP full plane

Connecting a 320x240 parallel display on i.MX6 resulted in an invalid DRDY
signal because the DC would not receive NL/EOL events on every line.
Reducing the allocated DMFC space from 4 slots (256 * 128-bit) to 2 slots
(128 * 128-bit) solved the problem.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

imx-drm: imx-drm-core: Fix circular locking dependency

Booting a mx6 with CONFIG_PROVE_LOCKING we get:

======================================================
[ INFO: possible circular locking dependency detected ]
3.12.0-rc4-next-20131009+ #34 Not tainted
-------------------------------------------------------
swapper/0/1 is trying to acquire lock:
 (&imx_drm_device->mutex){+.+.+.}, at: [<804575a8>] imx_drm_encoder_get_mux_id+0x28/0x98

but task is already holding lock:
 (&crtc->mutex){+.+...}, at: [<802fe778>] drm_modeset_lock_all+0x40/0x54

which lock already depends on the new lock.

the existing dependency chain (in reverse order) is:

-> #2 (&crtc->mutex){+.+...}:
       [<800777d0>] __lock_acquire+0x18d4/0x1c24
       [<80077fec>] lock_acquire+0x68/0x7c
       [<805ead5c>] _mutex_lock_nest_lock+0x58/0x3a8
       [<802fec50>] drm_crtc_init+0x48/0xa8
       [<80457c88>] imx_drm_add_crtc+0xd4/0x144
       [<8045e2e8>] ipu_drm_probe+0x114/0x1fc
       [<80312278>] platform_drv_probe+0x20/0x50
       [<80310c68>] driver_probe_device+0x110/0x22c
       [<80310e20>] __driver_attach+0x9c/0xa0
       [<8030f218>] bus_for_each_dev+0x5c/0x90
       [<80310750>] driver_attach+0x20/0x28
       [<8031034c>] bus_add_driver+0xdc/0x1dc
       [<803114d8>] driver_register+0x80/0xfc
       [<80312198>] __platform_driver_register+0x50/0x64
       [<808172fc>] ipu_drm_driver_init+0x18/0x20
       [<800088c0>] do_one_initcall+0xfc/0x160
       [<807e7c5c>] kernel_init_freeable+0x104/0x1d4
       [<805e2930>] kernel_init+0x10/0xec
       [<8000ea68>] ret_from_fork+0x14/0x2c

-> #1 (&dev->mode_config.mutex){+.+.+.}:
       [<800777d0>] __lock_acquire+0x18d4/0x1c24
       [<80077fec>] lock_acquire+0x68/0x7c
       [<805eb100>] mutex_lock_nested+0x54/0x3a4
       [<802fe758>] drm_modeset_lock_all+0x20/0x54
       [<802fead4>] drm_encoder_init+0x20/0x7c
       [<80457ae4>] imx_drm_add_encoder+0x88/0xec
       [<80459838>] imx_ldb_probe+0x344/0x4fc
       [<80312278>] platform_drv_probe+0x20/0x50
       [<80310c68>] driver_probe_device+0x110/0x22c
       [<80310e20>] __driver_attach+0x9c/0xa0
       [<8030f218>] bus_for_each_dev+0x5c/0x90
       [<80310750>] driver_attach+0x20/0x28
       [<8031034c>] bus_add_driver+0xdc/0x1dc
       [<803114d8>] driver_register+0x80/0xfc
       [<80312198>] __platform_driver_register+0x50/0x64
       [<8081722c>] imx_ldb_driver_init+0x18/0x20
       [<800088c0>] do_one_initcall+0xfc/0x160
       [<807e7c5c>] kernel_init_freeable+0x104/0x1d4
       [<805e2930>] kernel_init+0x10/0xec
       [<8000ea68>] ret_from_fork+0x14/0x2c

-> #0 (&imx_drm_device->mutex){+.+.+.}:
       [<805e510c>] print_circular_bug+0x74/0x2e0
       [<80077ad0>] __lock_acquire+0x1bd4/0x1c24
       [<80077fec>] lock_acquire+0x68/0x7c
       [<805eb100>] mutex_lock_nested+0x54/0x3a4
       [<804575a8>] imx_drm_encoder_get_mux_id+0x28/0x98
       [<80459a98>] imx_ldb_encoder_prepare+0x34/0x114
       [<802ef724>] drm_crtc_helper_set_mode+0x1f0/0x4c0
       [<802f0344>] drm_crtc_helper_set_config+0x828/0x99c
       [<802ff270>] drm_mode_set_config_internal+0x5c/0xdc
       [<802eebe0>] drm_fb_helper_set_par+0x50/0xb4
       [<802af580>] fbcon_init+0x490/0x500
       [<802dd104>] visual_init+0xa8/0xf8
       [<802df414>] do_bind_con_driver+0x140/0x37c
       [<802df764>] do_take_over_console+0x114/0x1c4
       [<802af65c>] do_fbcon_takeover+0x6c/0xd4
       [<802b2b30>] fbcon_event_notify+0x7c8/0x818
       [<80049954>] notifier_call_chain+0x4c/0x8c
       [<80049cd8>] __blocking_notifier_call_chain+0x50/0x68
       [<80049d10>] blocking_notifier_call_chain+0x20/0x28
       [<802a75f0>] fb_notifier_call_chain+0x1c/0x24
       [<802a9224>] register_framebuffer+0x188/0x268
       [<802ee994>] drm_fb_helper_initial_config+0x2bc/0x4b8
       [<802f118c>] drm_fbdev_cma_init+0x7c/0xec
       [<80817288>] imx_fb_helper_init+0x54/0x90
       [<800088c0>] do_one_initcall+0xfc/0x160
       [<807e7c5c>] kernel_init_freeable+0x104/0x1d4
       [<805e2930>] kernel_init+0x10/0xec
       [<8000ea68>] ret_from_fork+0x14/0x2c

other info that might help us debug this:

Chain exists of:
  &imx_drm_device->mutex --> &dev->mode_config.mutex --> &crtc->mutex

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&crtc->mutex);
                               lock(&dev->mode_config.mutex);
                               lock(&crtc->mutex);
  lock(&imx_drm_device->mutex);

 *** DEADLOCK ***

6 locks held by swapper/0/1:
 #0:  (registration_lock){+.+.+.}, at: [<802a90bc>] register_framebuffer+0x20/0x268
 #1:  (&fb_info->lock){+.+.+.}, at: [<802a7a90>] lock_fb_info+0x20/0x44
 #2:  (console_lock){+.+.+.}, at: [<802a9218>] register_framebuffer+0x17c/0x268
 #3:  ((fb_notifier_list).rwsem){.+.+.+}, at: [<80049cbc>] __blocking_notifier_call_chain+0x34/0x68
 #4:  (&dev->mode_config.mutex){+.+.+.}, at: [<802fe758>] drm_modeset_lock_all+0x20/0x54
 #5:  (&crtc->mutex){+.+...}, at: [<802fe778>] drm_modeset_lock_all+0x40/0x54

In order to avoid this lockdep warning, remove the locking from
imx_drm_encoder_get_mux_id() and imx_drm_crtc_panel_format_pins().

Tested on a mx6sabrelite and mx53qsb.

Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vt6656: make pControlURB available life time of driver.

There is no need remove and add the control urb in device open/close.

Move to the probe and disconnect. This make the USB control in/out
functions always available to driver.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt29f_spinand: Use module_spi_driver

module_spi_driver removes the boilerplate code and simplifies it.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Henry Pan <hspan@micron.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: xillybus: Use module_platform_driver

module_platform_driver simplifies the code by removing the boilerplate.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: gdm7240: fix memory leak on failure path

init_usb() may fail after some of mux_rxes already allocated.
So we need to release them on the failure path.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: gdm7240: alloc_mux_rx() does not need GFP_ATOMIC

As far as alloc_mux_rx() is called from probe() only
there is no need in GFP_ATOMIC here.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

zsmalloc: Fix "map_vm_area" undefined reference errors.

This patch adds a MMU dependency to configure the ZSMALLOC in
drivers/staging/zsmalloc/Kconfig. Without this patch, build
system can lead to build failure. This was observed during
randconfig testing, in which ZSMALLOC was enabled w/o MMU being
enabled. Following was the error:

LD      vmlinux
drivers/built-in.o: In function `__zs_map_object':
drivers/staging/zsmalloc/zsmalloc-main.c:650: undefined reference to `map_vm_area'
make: *** [vmlinux] Error 1

Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Seth Jennings <sjenning@linux.vnet.ibm.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: devel@driverdev.osuosl.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: sm7xxfb: fix line over 80 characters in sm7xxfb.c

Fix checkpatch.pl issues with line over 80 characters
in sm7xxfb.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: octeon: fix line over 80 characters in ethernet-tx.c

Fix checkpatch.pl issues with line over 80
characters in ethernet-tx.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: octeon: fix quoted string split across lines in ethernet-tx.c

Fix checkpatch.pl issues with quoted string split
across lines in ethernet-tx.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: octeon: quoted string split across lines in ethernet-spi.c

Fix checkpatch.pl issues with quoted string split
across lines in ethernet-spi.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: rtl8187se: suspect code indent for conditional statements in r8185b_init.c

Fix checkpatch.pl issues with suspect code indent for
conditional statements in r8185b_init.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: rtl8187se: fix avoid unnecessary line continuations in r8185b_init.c

Fix checkpatch.pl issues with avoid unnecessary line
continuations in r8185b_init.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: Fix sparse warnings regarding static functions

This fixes the following sparse warnings:
* drivers/staging/rtl8188eu/core/rtw_cmd.c:221:5: warning:
symbol 'rtw_cmd_filter' was not declared. Should it be static?
* drivers/staging/rtl8188eu/core/rtw_cmd.c:1670:6: warning:
symbol 'dynamic_chk_wk_hdl' was not declared. Should it be static?

Signed-off-by: Valentina Manea <valentina.manea.m@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:go7007:Fix warning on quoted string on multiple lines

Fix checkpatch.pl warning on quoted string on multiple lines in
go7007-usb.c

Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:go7007:Fix line over 80 character warning

Fix "line over 80 characters" warning generated by checkpatch.pl for
go7007-usb.c

Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:go7007 : Replace KERN_INFO with pr_info

Replace KERN_INFO with pr_info in go7007-usb.c

Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:go7007:Replace KERN_ERR with pr_err

Replace KERN_ERR with pr_err in go7007-usb.c

Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:go7007:Remove driver-specific debugging defines in favor of pr_debug

Remove driver-specific debugging defines in favor of pr_debug in
go7007-usb.c

Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: lustre: fix return is not a function, parentheses are not required in lo.c

fix checkpatch.pl issues with return is not a function,
parentheses are not required in lo.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: lustre: fix space prohibited between function name and open parenthesis '(' in lo.c

Fix checkpatch.pl issues with space prohibited between
function name and open parenthesis '(' in lo.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: lustre: fix space prohibited between function name and open parenthesis '(' in module.c

Fix checkpatch.pl issues with space prohibited between
function name and open parenthesis '(' in module.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: lustre: fix ERROR: do not initialise statics to 0 or NULL in module.c

Fix checkpatch.pl issues with do not initialise statics to 0 or NULL in module.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:media:lirc: quoted string split across lines

Fix checkpatch.pl issues with quoted string split across lines in lirc_imon.c

Signed-off-by: Archana kumari <archanakumari959@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: wlan-ng: fix sparse warnings for static functions

Fix sparse warnings for static functions
* drivers/staging/wlan-ng/cfg80211.c:101:5: warning:
symbol 'prism2_change_virtual_intf' was not declared.

Signed-off-by: Teodora Baluta <teobaluta@gmail.com>
Signed-off-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: wlan-ng: fix printk(KERN_DEBUG in p80211wep.c

Fix checkpatch.pl issues with prefer netdev_dbg(netdev, .. then
dev_dbg(dev, .. then pr_debug(.. to printk(KERN_DEBUG in p80211wep.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: iio: fix sizeof *ring should be sizeof(*ring)

Fix checkpatch.pl issues with sizeof *ring should be sizeof(*ring)
in sca3000_ring.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: btmtk_usb: Fix line length exceeding 80 characters using min_t macro

This patch fixes the following checkpatch.pl warning in btmtk_usb.c:
WARNING: line over 80 characters in the file
by using kernel built_in min_t macro.

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: btmtk_usb: Fix indentation for conditional statement

The patch fixes the following checkpatch.pl warning in btmtk_usb.c
WARNING: suspect code indent for conditional statements

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: btmtk_usb: Removal of Unnecessary white spaces

The patch fixes the following checkpatch.pl warning in btmtk_usb.c
WARNING: unnecessary whitespace before a quoted newline

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: btmtk_usb: Fix incorrect brace placement

The patch fixes the following checkpatch.pl warning in btmtk_usb.c
WARNING: braces {} are not necessary for single statement blocks

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Zach Brown <zab@redhat.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: btmtk_usb: Fix line length exceeding 80 characters

This patch fixes the following checkpatch.pl warning in btmtk_usb.c
WARNING: line over 80 characters in the file

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging:cxt1e1: Fixes whitespace around commas in sbew_ioc.h

Fixes whitepace around commas. Detected via checkpatch.pl.

ERROR: space required after that ','

Signed-off-by: Archana kumari <archanakumari959@gmail.com>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: gdm724x: fix line over 80 characters in gdm_tty.c

Fix checkpatch.pl issues wtih line over 80 characters
in gdm_tty.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: gdm724x: Fix sparse warnings regarding static functions/variables

This fixes sparse warnings for functions and variables, e.g.:
* drivers/staging/gdm724x/gdm_mux.c:29:25: warning: symbol
'mux_rx_wq' was not declared. Should it be static?

Signed-off-by: Valentina Manea <valentina.manea.m@gmail.com>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: ktap: add to the kernel tree

This patch introduces ktap to staging tree.

ktap is a new script-based dynamic tracing tool for Linux,
it uses a scripting language and lets users trace the
Linux kernel dynamically. ktap is designed to give
operational insights with interoperability that allow
users to tune, troubleshoot and extend kernel and application.
It's similar with Linux Systemtap and Solaris Dtrace.

ktap have different design principles from Linux mainstream
dynamic tracing language in that it's based on bytecode,
so it doesn't depend upon GCC, doesn't require compiling
kernel module for each script, safe to use in production
environment, fulfilling the embedded ecosystem's tracing needs.

See ktap tutorial for more information:
    http://www.ktap.org/doc/tutorial.html

The merit of putting this software in staging tree is
to make it more possible to get feedback from users
and thus polish the code.

Signed-off-by: Jovi Zhangwei <jovi.zhangwei@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: avoid memleak for subdevice private

`comedi_alloc_spriv()` allocates private storage for a comedi subdevice
and sets the `SRF_FREE_SPRIV` flag in the `runflags` member of the
subdevice to allow the private storage to be automatically freed when
the comedi device is being cleaned up.  Unfortunately, the flag gets
clobbered by `do_cmd_ioctl()` which calls
`comedi_set_subdevice_runflags()` with a mask value `~0` and only the
`SRF_USER` and `SRF_RUNNING` flags set, all the other SRF flags being
cleared.

Change the calls to `comedi_set_subdevice_runflags()` that currently use
a mask value of `~0` to use a more relevant mask value.  For
`do_cmd_ioctl()`, the relevant SRF flags are `SRF_USER`, `SRF_ERROR` and
`SRF_RUNNING`.  (At one time, `SRF_RT` would be included in that set of
flags, but it is no longer used.)  For `comedi_alloc_spriv()` replace
the call to `comedi_set_subdevice_runflags()` with a simple
OR-assignment to avoid unnecessary use of a spin-lock.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Cc: <stable@vger.kernel.org> # 3.11.y
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vt6656: rxtx.c cleanup s_vGenerateTxParameter

Remove white space and commented out code.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: remove 'settling_time_0' from subdevice

The `settling_time_0` member of `struct comedi_subdevice` can be set by
a low-level comedi driver and will be copied to user-space as part of
the information provided by the `COMEDI_SUBDINFO` ioctl.  No comedi
driver has ever set it; it's just been left at its initial value of 0.
Remove it to save a bit of space, and behave as though it is 0.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: remove unused 'channel flags' support

The `flags` and `flaglist` members of `struct comedi_subdevice` were
defined to supply "all-channel" flags via the `COMEDI_SUBDINFO` ioctl,
or "channel-specific" flags via the `COMEDI_CHANINFO` ioctls,
respectively.  However, no comedi driver has ever set them.

It's not entirely clear how "all-channel" flags would differ from the
"subdevice" flags passed by `COMEDI_SUBDINFO`.  It is conceivable that
"channel-specific" flags could be used to describe different analog
reference values (or whatever) supported by different channels.
Presumably these would use some sub-set of the `SDF_xxx` subdevice flag
values, or possibly the `CR_xxx` flag values that get packed into a
"chanspec" value (along with a channel number and range code).  The
original intentions are lost in the mists of time.

For now, just remove the `flags` and `flaglist` members from `struct
comedi_subdevice` and behave as though they have been left at their
default values (0 or NULL) by the low-level comedi driver.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: dt9812: remove ifdefed out enums

Remove the #if'd out DT9812_DEVID_... enumerated constants and line up
the comments for the others.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: Fix skb leak in usb_read_port_complete()

In the completion routine for a usb_fill_bulk_urb() call, an skb is
leaked whenever the status of the USB transaction is not zero. A call
to skb_put() is needed to fix the problem.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: bcm: line over 80 characters in Bcmnet.c

Fix checkpatch.pl issues with line over 80 characters in Bcmnet.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: xgifb: braces {} are not necessary for single statement in vb_setmode

Fix checkpatch.pl issues with braces {} are not necessary
for single statement blocks in vb_setmode.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: crystalhd: Fix sparse warnings regarding static functions

This fixes the following sparse warnings:
* drivers/staging/crystalhd/crystalhd_lnx.c:78:29: warning:
symbol 'chd_dec_alloc_iodata' was not declared. Should it be static?
* drivers/staging/crystalhd/crystalhd_lnx.c:99:6: warning:
symbol 'chd_dec_free_iodata' was not declared. Should it be static?
* drivers/staging/crystalhd/crystalhd_lnx.c:630:5: warning:
symbol 'chd_dec_pci_suspend' was not declared. Should it be static?
* drivers/staging/crystalhd/crystalhd_lnx.c:664:5: warning:
symbol 'chd_dec_pci_resume' was not declared. Should it be static?

Signed-off-by: Valentina Manea <valentina.manea.m@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: iio: adt7316-i2c: quoted string split across lines

Fix checkpatch.pl issues with quoted string split across lines in adt7316-i2c.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: iio: adt7316-spi: fix quoted string split across lines

Fix checkpatch.pl issues with quoted string split across lines in adt7316-spi.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: iio: printk(KERN_INFO ...

Fix checkpatch.pl issues with prefer netdev_info(netdev, .. then dev_info(dev, ..
then pr_info(...  to printk(KERN_INFO .. in lis3l02dq_ring.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: iio: space prohibited before semicolon

Fix checkpatch.pl issues with space prohibited before semicolon in
lis3l02dq_ring.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: iio: iio_simple_dummy: fix line over 80 characters

Fix checkpatch.pl issues with line over 80 characters in
iio_simple_dummy.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: xillybus: quoted strings split across lines

Fix checkpatch.pl issues with quoted strings split across lines in xillybus_core.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: keucr: fix quoted string split across lines

Fix checkpatch.pl issues quoted string split across lines in usb.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: tidspbridge: fix no space before tabs

Fix checkpatch.pl issues please, no space before tabs in
drivers/staging/tidspbridge/rmgr/dspdrv.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging/media/go7007:Replace kern_debug with pr_debug

Replace kern_debug with pr_debug in go7007-usb.c

Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging/cxt1e1:Fixes suspect code indent warning

Fixes checkpatch.pl warning "suspect code indent for conditional
statements" for comet.c.

Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-ethernet: allow to use only 1 CPU for packet processing

Module parameter max_rx_cpus has off-by-one error. Fix that.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-ethernet: allow to set IRQ smp_affinity freely

Currently the driver assumes that CPU 0 is handling all the hard IRQs.
This is wrong in Linux SMP systems where user is allowed to assign to
hardware IRQs to any CPU. The driver will stop working if user sets
smp_affinity so that interrupts end up being handled by other than CPU
0. The patch fixes that.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: refactor __cvmx_usb_pipe_needs_split

Split a long line and remove redundant parenthesis.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: eliminate submit_handle

Eliminate submit_handle, use a direct reference instead.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: eliminate pipe_handle

Eliminate pipe_handle, use a direct reference instead.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: clean up hcpriv usage

Use ep->hcpriv for pipe handle and urb->hcpriv for submit handle,
instead of packing both into the same field.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: cvmx_usb_submit_control: get params from urb

Get the transfer parameters from urb.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: cvmx_usb_submit_interrupt: get params from urb

Get the transfer parameters from urb.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: cvmx_usb_submit_control: get params from urb

Get the transfer parameters from urb.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: cvmx_usb_submit_bulk: get params from urb

Get the transfer parameters from urb.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: replace generic transfer callback data with urb

URB is always passed, so we can use strong typing here.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: call transfer completion callback directly

The callback is always the same, we can just call it directly.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: call port change callback directly

Call port change callback directly.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: inline cvmx_usb_set_status

Inline a trivial function.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: eliminate cvmx_usb_internal_state

Eliminate cvmx_usb_internal_state, just use cvmx_usb_state everywhere.
This also enables to allocate only the needed amount of data for the
USB internal state, instead of always allocating 64 KB.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-usb: merge cvmx-usb into octeon-hcd

cvmx-usb module provided Cavium "OS abstraction layer" for USB
functionality. To make this driver a proper Linux driver, we need to
refactor this layer out. By making all the code internal to the HCD
driver makes this task easier.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge 3.12-rc4 into staging-next

We want the staging fixes in this branch as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Linux 3.12-rc4

net: Update the sysctl permissions handler to test effective uid/gid

Modify the code to use current_euid(), and in_egroup_p, as in done
in fs/proc/proc_sysctl.c:test_perm()

Cc: stable@vger.kernel.org
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Reported-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge git://git./linux/kernel/git/nab/target-pending

Pull SCSI target fixes from Nicholas Bellinger:
 "Here are the outstanding target fixes queued up for v3.12-rc4 code.

  The highlights include:

   - Make vhost/scsi tag percpu_ida_alloc() use GFP_ATOMIC
   - Allow sess_cmd_map allocation failure fallback to use vzalloc
   - Fix COMPARE_AND_WRITE se_cmd->data_length bug with FILEIO backends
   - Fixes for COMPARE_AND_WRITE callback recursive failure OOPs + non
     zero scsi_status bug
   - Make iscsi-target do acknowledgement tag release from RX context
   - Setup iscsi-target with extra (cmdsn_depth / 2) percpu_ida tags

  Also included is a iscsi-target patch CC'ed for v3.10+ that avoids
  legacy wait_for_task=true release during fast-past StatSN
  acknowledgement, and two other SRP target related patches that address
  long-standing issues that are CC'ed for v3.3+.

  Extra thanks to Thomas Glanzmann for his testing feedback with
  COMPARE_AND_WRITE + EXTENDED_COPY VAAI logic"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  iscsi-target; Allow an extra tag_num / 2 number of percpu_ida tags
  iscsi-target: Perform release of acknowledged tags from RX context
  iscsi-target: Only perform wait_for_tasks when performing shutdown
  target: Fail on non zero scsi_status in compare_and_write_callback
  target: Fix recursive COMPARE_AND_WRITE callback failure
  target: Reset data_length for COMPARE_AND_WRITE to NoLB * block_size
  ib_srpt: always set response for task management
  target: Fall back to vzalloc upon ->sess_cmd_map kzalloc failure
  vhost/scsi: Use GFP_ATOMIC with percpu_ida_alloc for obtaining tag
  ib_srpt: Destroy cm_id before destroying QP.
  target: Fix xop->dbl assignment in target_xcopy_parse_segdesc_02

Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dmaengine fixes from Vinod Koul:
 "Here is the slave dmanegine fixes.  We have the fix for deadlock issue
  on imx-dma by Michael and Josh's edma config fix along with author
  change"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: imx-dma: fix callback path in tasklet
  dmaengine: imx-dma: fix lockdep issue between irqhandler and tasklet
  dmaengine: imx-dma: fix slow path issue in prep_dma_cyclic
  dma/Kconfig: Make TI_EDMA select TI_PRIV_EDMA
  edma: Update author email address

Merge tag 'iio-for-3.13c' of git://git./linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Third set of new functionality and cleanups for IIO in the 3.13 cycle.

Driver New Functionality
* MXS - new interrupt driven touch screen support for i.MX23/28. Old
  polled implementation dropped.

Driver Cleanups
* Some spi_sync boilerplate dropped by using spi_sync_transfer
* Some switching of drivers to the fractional type for scale reading.
  Moves the ugly calculation into one place.
* Fix the documentation for *_voltage_scale which is never been correct
  or as implemented in any driver.
* HID sensor hub and children : Open the sensor hub only when someone cares.
* hmc5843 - various minor

sep: Convert sep_lock_user_pages() to get_user_pages_fast()

CC: Mark Allyn <mark.a.allyn@intel.com>
CC: Jayant Mangalampalli <jayant.mangalampalli@intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

ced1401: Convert driver to use get_user_pages_fast()

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

lustre: Convert ll_get_user_pages() to use get_user_pages_fast()

CC: Peng Tao <tao.peng@emc.com>
Acked-by: Andreas Dilger <andreas.dilger@intel.com>
CC: hpdd-discuss@lists.01.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: xillybus: remove redundant Kconfig dependency

XILLYBUS_PCIE and XILLYBUS_OF are inside 'if XILLYBUS' already, so there is not
need to depend on XILLYBUS.

Cc: Eli Billauer <eli.billauer@gmail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: dgnc: changes arguments in sizeof

The arguments that were passed into sizeof were
generic. This patch changes this by putting
the actual item that we need a size of instead.

For example:
-   kzalloc(sizeof(struct dgnc_board), GFP_KERNEL);
+   kzalloc(sizeof(*brd), GFP_KERNEL);

Signed-off-by: Lidza Louina <lidza.louina@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs

Pull btrfs fixes from Chris Mason:
 "This is a small collection of fixes, including a regression fix from
  Liu Bo that solves rare crashes with compression on.

  I've merged my for-linus up to 3.12-rc3 because the top commit is only
  meant for 3.12.  The rest of the fixes are also available in my master
  branch on top of my last 3.11 based pull"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  btrfs: Fix crash due to not allocating integrity data for a bioset
  Btrfs: fix a use-after-free bug in btrfs_dev_replace_finishing
  Btrfs: eliminate races in worker stopping code
  Btrfs: fix crash of compressed writes
  Btrfs: fix transid verify errors when recovering log tree

Merge tag 'gpio-v3.12-2' of git://git./linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Two patches for the OMAP driver, dealing with setting up IRQs properly
  on the device tree boot path"

* tag 'gpio-v3.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio/omap: auto-setup a GPIO when used as an IRQ
  gpio/omap: maintain GPIO and IRQ usage separately

Merge tag 'usb-3.12-rc4' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are none fixes for various USB driver problems.  The majority are
  gadget/musb fixes, but there are some new device ids in here as well"

* tag 'usb-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: chipidea: add Intel Clovertrail pci id
  usb: gadget: s3c-hsotg: fix can_write limit for non-periodic endpoints
  usb: gadget: f_fs: fix error handling
  usb: musb: dsps: do not bind to "musb-hdrc"
  USB: serial: option: Ignore card reader interface on Huawei E1750
  usb: musb: gadget: fix otg active status flag
  usb: phy: gpio-vbus: fix deferred probe from __init
  usb: gadget: pxa25x_udc: fix deferred probe from __init
  usb: musb: fix otg default state

Merge tag 'tty-3.12-rc4' of git://git./linux/kernel/git/gregkh/tty

Pull tty fixes from Greg KH:
 "Here are two tty driver fixes for 3.12-rc4.

  One fixes the reported regression in the n_tty code that a number of
  people found recently, and the other one fixes an issue with xen
  consoles that broke in 3.10"

* tag 'tty-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  xen/hvc: allow xenboot console to be used again
  tty: Fix pty master read() after slave closes

Merge tag 'staging-3.12-rc4' of git://git./linux/kernel/git/gregkh/staging

Pull staging fixes from Greg KH:
 "Here are 4 tiny staging and iio driver fixes for 3.12-rc4.  Nothing
  major, just some small fixes for reported issues"

* tag 'staging-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: comedi: ni_65xx: (bug fix) confine insn_bits to one subdevice
  iio:magnetometer: Bugfix magnetometer default output registers
  iio: Remove debugfs entries in iio_device_unregister()
  iio: amplifiers: ad8366: Remove regulator_put

btrfs: Fix crash due to not allocating integrity data for a bioset

When btrfs creates a bioset, we must also allocate the integrity data pool.
Otherwise btrfs will crash when it tries to submit a bio to a checksumming
disk:

 BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
 IP: [<ffffffff8111e28a>] mempool_alloc+0x4a/0x150
 PGD 2305e4067 PUD 23063d067 PMD 0
 Oops: 0000 [#1] PREEMPT SMP
 Modules linked in: btrfs scsi_debug xfs ext4 jbd2 ext3 jbd mbcache
sch_fq_codel eeprom lpc_ich mfd_core nfsd exportfs auth_rpcgss af_packet
raid6_pq xor zlib_deflate libcrc32c [last unloaded: scsi_debug]
 CPU: 1 PID: 4486 Comm: mount Not tainted 3.12.0-rc1-mcsum #2
 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
 task: ffff8802451c9720 ti: ffff880230698000 task.ti: ffff880230698000
 RIP: 0010:[<ffffffff8111e28a>]  [<ffffffff8111e28a>] mempool_alloc+0x4a/0x150
 RSP: 0018:ffff880230699688  EFLAGS: 00010286
 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 00000000005f8445
 RDX: 0000000000000001 RSI: 0000000000000010 RDI: 0000000000000000
 RBP: ffff8802306996f8 R08: 0000000000011200 R09: 0000000000000008
 R10: 0000000000000020 R11: ffff88009d6e8000 R12: 0000000000011210
 R13: 0000000000000030 R14: ffff8802306996b8 R15: ffff8802451c9720
 FS:  00007f25b8a16800(0000) GS:ffff88024fc80000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
 CR2: 0000000000000018 CR3: 0000000230576000 CR4: 00000000000007e0
 Stack:
  ffff8802451c9720 0000000000000002 ffffffff81a97100 0000000000281250
  ffffffff81a96480 ffff88024fc99150 ffff880228d18200 0000000000000000
  0000000000000000 0000000000000040 ffff880230e8c2e8 ffff8802459dc900
 Call Trace:
  [<ffffffff811b2208>] bio_integrity_alloc+0x48/0x1b0
  [<ffffffff811b26fc>] bio_integrity_prep+0xac/0x360
  [<ffffffff8111e298>] ? mempool_alloc+0x58/0x150
  [<ffffffffa03e8041>] ? alloc_extent_state+0x31/0x110 [btrfs]
  [<ffffffff81241579>] blk_queue_bio+0x1c9/0x460
  [<ffffffff8123e58a>] generic_make_request+0xca/0x100
  [<ffffffff8123e639>] submit_bio+0x79/0x160
  [<ffffffffa03f865e>] btrfs_map_bio+0x48e/0x5b0 [btrfs]
  [<ffffffffa03c821a>] btree_submit_bio_hook+0xda/0x110 [btrfs]
  [<ffffffffa03e7eba>] submit_one_bio+0x6a/0xa0 [btrfs]
  [<ffffffffa03ef450>] read_extent_buffer_pages+0x250/0x310 [btrfs]
  [<ffffffff8125eef6>] ? __radix_tree_preload+0x66/0xf0
  [<ffffffff8125f1c5>] ? radix_tree_insert+0x95/0x260
  [<ffffffffa03c66f6>] btree_read_extent_buffer_pages.constprop.128+0xb6/0x120
[btrfs]
  [<ffffffffa03c8c1a>] read_tree_block+0x3a/0x60 [btrfs]
  [<ffffffffa03caefd>] open_ctree+0x139d/0x2030 [btrfs]
  [<ffffffffa03a282a>] btrfs_mount+0x53a/0x7d0 [btrfs]
  [<ffffffff8113ab0b>] ? pcpu_alloc+0x8eb/0x9f0
  [<ffffffff81167305>] ? __kmalloc_track_caller+0x35/0x1e0
  [<ffffffff81176ba0>] mount_fs+0x20/0xd0
  [<ffffffff81191096>] vfs_kern_mount+0x76/0x120
  [<ffffffff81193320>] do_mount+0x200/0xa40
  [<ffffffff81135cdb>] ? strndup_user+0x5b/0x80
  [<ffffffff81193bf0>] SyS_mount+0x90/0xe0
  [<ffffffff8156d31d>] system_call_fastpath+0x1a/0x1f
 Code: 4c 8d 75 a8 4c 89 6d e8 45 89 e0 4c 8d 6f 30 48 89 5d d8 41 83 e0 af 48
89 fb 49 83 c6 18 4c 89 7d f8 65 4c 8b 3c 25 c0 b8 00 00 <48> 8b 73 18 44 89 c7
44 89 45 98 ff 53 20 48 85 c0 48 89 c2 74
 RIP  [<ffffffff8111e28a>] mempool_alloc+0x4a/0x150
  RSP <ffff880230699688>
 CR2: 0000000000000018
 ---[ end trace 7a96042017ed21e2 ]---

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

Merge branch 'for-linus' into for-linus-3.12

staging:iio:ad9951: Use spi_sync_transfer()

Use the spi_sync_transfer() helper function instead of open-coding it. Makes the
code a bit shorter.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>