ACPI: Create "idle=halt" bootparam

"idle=halt" limits the idle loop to using
the halt instruction.  No MWAIT, no IO accesses,
no C-states deeper than C1.

If something is broken in the idle code,
"idle=halt" is a less severe workaround
than "idle=poll" which disables all power savings.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPI: Disable the C2C3_FFH access mode HW has no MWAIT support

991528d7348667924176f3e29addea0675298944
(ACPI: Processor native C-states using MWAIT)
started passing C2C3_FFH to _PDC to tell the BIOS
that Linux supports MWAIT for deep C-states.

However, we should first double check with the hardware
that it actually supports MWAIT before potentially exposing
a BIOS bug of an MWAIT _CST on HW that doesn't support MWAIT.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPI: Enhance /sys/firmware/interrupts to allow enable/disable/clear from user-space

Allow users to enable/disable/clear a specific & valid GPE/Fixed Event
in user space.

This is useful for debugging, especially for some
interrupt storm issues.

All wakeup GPEs are disabled and they can not be enabled at runtime,
and we mark them as invalid.

All GPEs that don't have a _Lxx/_Exx method are marked as invalid.

All Fixed Events that don't have an event handler are marked as invalid
and they can't be enabled until an event handler is registered.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Ling Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Update version to 20080609

Update version to 20080609.

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Fix mutex debug code for wrong loop termination value

Loop was terminating one iteration early, missing one of the
debugger handshake mutexes. Linn Crosetto.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Cleanup of _PRT parsing code

Removed extraneous else clauses, other general cleanup.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Cleanup debug operand dump mechanism

Eliminated unnecessary operands; eliminated use of negative index
in loop.  Operands now displayed in correct order, not backwards.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Fix for invalid large array index on 64-bit systems

This problem was introduced in 20080514 as a result of the
elimination of the acpi_native_uint type. Code uses a negative
array index, which should be eliminated.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Update disassembler for DMAR table changes

Now supports the 2007 intel Virtualization Technology for Directed
I/O specification.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Update DMAR and SRAT table definitions

Synchronized tables with current specifications.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Workaround for reversed _PRT entries from BIOS

Some BIOSs erroneously reverse the _PRT SourceName and the
SourceIndex.  Detect and repair this problem. MS ACPI also allows
and repairs this problem, thus ACPICA must also.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Update version to 20080514

Update version to 20080514

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Add const qualifier for appropriate string constants

Mostly MODULE_NAME and printf format strings.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Several lint changes, no functional changes

Remove pointer cast warnings and fix for a debug printf.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Removed unused include files from source files

From lint.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Eliminate acpi_native_uint type v2

No longer needed; replaced mostly with u32, but also acpi_size
where a type that changes 32/64 bit on 32/64-bit platforms is
required.

v2: Fix a cast of a 32-bit int to a pointer in ACPI to avoid a compiler warning.
from David Howells

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Fix possible negative array index in acpi_ut_validate_exception

Added NULL fields to the exception string arrays to eliminate
the -1 subtraction on the SubStatus field.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Update tracking macros to reduce code/data size

Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of
strings instead of pointers to static strings. Jan Beulich and
Bob Moore.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Fix for hang on GPE method invocation

Fixes problem where the new method argument count validation mechanism
will enter an infinite loop when a GPE method is dispatched.
Problem fixed be removing the obsolete code that passes GPE block
information to the notify handler via the control method parameter pointer.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: Add argument count checking to control method invocation via acpi_evaluate_object

Error if too few arguments, warning if too many. This applies
only to external programmatic control method execution, not
method-to-method calls within the AML.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

fujitsu-laptop: depends on INPUT

fujitsu-laptop uses input_* functions, so it should depend on INPUT.

drivers/built-in.o: In function `acpi_fujitsu_add':
fujitsu-laptop.c:(.text+0xaaec7): undefined reference to `input_allocate_device'
fujitsu-laptop.c:(.text+0xaaf39): undefined reference to `input_register_device'
fujitsu-laptop.c:(.text+0xab025): undefined reference to `input_free_device'
drivers/built-in.o: In function `acpi_fujitsu_notify':
fujitsu-laptop.c:(.text+0xab0d8): undefined reference to `input_event'
fujitsu-laptop.c:(.text+0xab0e5): undefined reference to `input_event'
fujitsu-laptop.c:(.text+0xab0f5): undefined reference to `input_event'
fujitsu-laptop.c:(.text+0xab102): undefined reference to `input_event'
drivers/built-in.o: In function `acpi_fujitsu_hotkey_notify':
fujitsu-laptop.c:(.text+0xab261): undefined reference to `input_event'
drivers/built-in.o:fujitsu-laptop.c:(.text+0xab26e): more undefined references to `input_event' follow
drivers/built-in.o: In function `acpi_fujitsu_hotkey_add':
fujitsu-laptop.c:(.text+0xab49c): undefined reference to `input_allocate_device'
fujitsu-laptop.c:(.text+0xab51a): undefined reference to `input_register_device'
fujitsu-laptop.c:(.text+0xab5e4): undefined reference to `input_free_device'
make[1]: *** [.tmp_vmlinux1] Error 1

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jonathan Woithe <jwoithe@physics.adelaide.edu.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>

snapshot: Use pm_mutex for mutual exclusion

We can avoid taking the BKL in snapshot_ioctl() if pm_mutex is used to prevent
the ioctls from being executed concurrently.

In addition, although it is only possible to open /dev/snapshot once, the task
which has done that may spawn a child that will inherit the open descriptor,
so in theory they can call snapshot_write(), snapshot_read() and
snapshot_release() concurrently.  pm_mutex can also be used for mutual
exclusion in such cases.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Len Brown <len.brown@intel.com>

snapshot: Push BKL down into ioctl handlers

Push BKL down into ioctl handlers - snapshot device.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

Freezer: Introduce PF_FREEZER_NOSIG

The freezer currently attempts to distinguish kernel threads from
user space tasks by checking if their mm pointer is unset and it
does not send fake signals to kernel threads.  However, there are
kernel threads, mostly related to networking, that behave like
user space tasks and may want to be sent a fake signal to be frozen.

Introduce the new process flag PF_FREEZER_NOSIG that will be set
by default for all kernel threads and make the freezer only send
fake signals to the tasks having PF_FREEZER_NOSIG unset.  Provide
the set_freezable_with_signal() function to be called by the kernel
threads that want to be sent a fake signal for freezing.

This patch should not change the freezer's observable behavior.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Len Brown <len.brown@intel.com>

APM emulation: Notify about all suspend events, not just APM invoked ones (v2)

This revamps the apm-emulation code to get suspend notifications
regardless of what way pm_suspend() was invoked, whether via the
apm ioctl or via /sys/power/state. Also do some code cleanup and
add comments while at it.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPI PM: Remove obsolete Toshiba workaround

Remove the obsolete workaround for a Toshiba Satellite 4030cdt
S1 problem from drivers/acpi/sleep/main.c .

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Len Brown <len.brown@intel.com>

PCI ACPI: Drop the second argument of platform_pci_choose_state

Since the second argument of acpi_pci_choose_state() and
platform_pci_choose_state() is never used, remove it.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Len Brown <len.brown@intel.com>

ACPI PM: acpi_pm_device_sleep_state() cleanup

Get rid of a superfluous acpi_pm_device_sleep_state() parameter.  The
only legitimate value of that parameter must be derived from the first
parameter, which is what all the callers already do.  (However, this
does not address the fact that ACPI still doesn't set up those flags.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>

dock: bay: Don't call acpi_walk_namespace() when ACPI is disabled.

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPI: don't walk tables if ACPI was disabled

Ingo Molnar wrote:
> -tip auto-testing started triggering this spinlock corruption message
> yesterday:
>
> [    3.976213] calling  acpi_rtc_init+0x0/0xd3
> [    3.980213] ACPI Exception (utmutex-0263): AE_BAD_PARAMETER, Thread F7C50000 could not acquire Mutex [3] [20080321]
> [    3.992213] BUG: spinlock bad magic on CPU#0, swapper/1
> [    3.992213]  lock: c2508dc4, .magic: 00000000, .owner: swapper/1, .owner_cpu: 0

This is apparently because some parts of ACPI, including mutexes, are not
initialized when acpi=off is passed to the kernel.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

acer-wmi: Remove version number

It doesn't make much sense these days.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

acer-wmi: Add debugfs file for device detection

Add a debugfs file for showing the full results of the method we use to
detect devices on WMID laptops.

This should be useful in the case that a Linux user gets an Acer laptop
with 3G support (and/ or people who enjoy ripping their wireless cards out)
so we can get some feedback on how this value changes in these cases.

(At the moment, we always enable the wireless and 3G control. In the case
of the former, this is fairly safe. In the case of the latter though,
trying to toggle this device if it doesn't exist on a laptop causes ACPI
warnings/ errors).

To summarise: If you have an Acer laptop with a built in 3G card, please
report back the value from this file.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

acer-wmi: Disable device autodetection on Fujitsu Siemens Amilo Li2732

The AMW0 (V1) device detection method doesn't work properly on this laptop,
so disable it, and for other laptops that may have this problem, by
switching on a strange GUID.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

acer-wmi: Add EC quirk for Fujitsu Siemens Amilo Li 1718

This laptop needs a different EC quirk from the standard Acer one to read
the wireless status.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

acer-wmi: Respect framebuffer blanking in backlight

If the framebuffer has requested blanking, turn the backlight down. Also
offer the user the option to do this.

Reported-by: Michal Pecio <michal.pecio@gmail.com>
Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

acer-wmi: Blacklist backlight on Acer Aspire 1520 & 1360 series

A newer BIOS for these laptops adds ACPI-WMI support to them. However, it does
not add support for the backlight via the EC, and we have no way to detect
this on older machines, so blacklist it from them.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

acer-wmi: Remove LED colour comment from documentation

This should have been removed when the colour was removed from the LED
device name.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

eeepc-laptop: static

make the needlessly global cm_{g,s}etv[] static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPICA: fix mutex names in debug code.

Reorder the mutex names to match the preceding #defines

Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

Make GPE disable more robust

Implemented another change for the GPE disable. We now perform a
read-change-write of the enable register instead of simply writing out the
cached enable mask. This will prevent inadvertent enabling of GPEs if a rogue
GPE is received during initialization (before GPE handlers are installed.)

http://bugzilla.kernel.org/show_bug.cgi?id=6217

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

compal-laptop: remove unnecessary lcd_level attribute

Signed-off-by: Cezary Jackiewicz <cezary.jackiewicz@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

acpi: fix printk format warning

Fix printk format warning:

linux-next-20080617/drivers/acpi/processor_throttling.c:1258: warning: format '%d' expects type 'int', but argument 4 has type 'size_t'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPI: fix processor throttling set error

http://bugzilla.kernel.org/show_bug.cgi?id=9704

When echo some invalid values to /proc/acpi/processor/*/throttling,
there isn't any error info returned, on the contray, it sets
throttling value to some T* successfully, obviously, this is incorrect,
a correct way should be to let it fail and return error info.

This patch fixed the aforementioned issue, it also enables
/proc/acpi/processor/*/throttling to accept such values as 't0' and 'T0',
it also strictly limits /proc/acpi/processor/*/throttling only to accept
 "*", "t*" and "T*", "*" is the throttling state value the processor can
support, current, it is 0 - 7.

Before applying this patch, the test result is below:

[root@localhost acpi]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T1
state available: T0 to T7
states:
    T0:                  100%
   *T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost acpi]# echo "1xxxxxx" > /proc/acpi/processor/CPU0/throttling
[root@localhost acpi]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T1
state available: T0 to T7
states:
    T0:                  100%
   *T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost acpi]# echo "0" > /proc/acpi/processor/CPU0/throttling
[root@localhost acpi]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost acpi]# cd /
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "T0" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "T7" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "T100" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "xxx" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "2xxxx" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T2
state available: T0 to T7
states:
    T0:                  100%
    T1:                  87%
   *T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "7777" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost /]# echo "7xxx" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T7
state available: T0 to T7
states:
    T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
   *T7:                  12%
[root@localhost /]#

After applying this patch, the test result is below:

[root@localhost linux-2.6.24-rc6]# echo > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "0" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo "t0" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo "T0" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost linux-2.6.24-rc6]# echo "T7" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T7
state available: T0 to T7
states:
    T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
   *T7:                  12%
[root@localhost linux-2.6.24-rc6]# echo "T8" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# vi drivers/acpi/processor_throttling.c
[root@localhost linux-2.6.24-rc6]# echo "T8" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "t7" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo "t70" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "70" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "7000" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "70" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "xxx" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo -n > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo -n "" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo $?
0
[root@localhost linux-2.6.24-rc6]# echo -n "" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T7
state available: T0 to T7
states:
    T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
   *T7:                  12%
[root@localhost linux-2.6.24-rc6]# echo -n "" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T7
state available: T0 to T7
states:
    T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
   *T7:                  12%
[root@localhost linux-2.6.24-rc6]# echo t0 > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo T0 > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo Tt0 > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo T > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]#

Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPI: fix acpi fan state set error

Under /proc/acpi, there is a fan control interface, a user can
set 0 or 3 to /proc/acpi/fan/*/state, 0 denotes D0 state, 3
denotes D3 state, but in current implementation, a user can
set a fan to D1 state by any char excluding '1', '2' and '3'.

For example:

[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost acpi]# echo "" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost acpi]# echo "3" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost acpi]# echo "xxxxx" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  on

Obviously, such inputs as "" and "xxxxx" are invalid for fan state.

This patch fixes this issue, it strictly limits fan state only to
accept 0, 1, 2 and 3, any other inputs are invalid.

Before applying this patch, the test result is:

[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost acpi]# echo "" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost acpi]# echo "3" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost acpi]# echo "xxxxx" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost acpi]# echo "3" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost acpi]# echo "3x" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost acpi]# echo "-1x" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost acpi]#

After applying this patch, the test result is:

[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost ~]# echo "" > /proc/acpi/fan/C31B/state
-bash: echo: write error: Invalid argument
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost ~]# echo "3" > /proc/acpi/fan/C31B/state
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost ~]# echo "xxxxx" > /proc/acpi/fan/C31B/state
-bash: echo: write error: Invalid argument
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost ~]# echo "-1x" > /proc/acpi/fan/C31B/state
-bash: echo: write error: Invalid argument
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost ~]# echo "0" > //proc/acpi/fan/C31B/state
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost ~]# echo "4" > //proc/acpi/fan/C31B/state
-bash: echo: write error: Invalid argument
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost ~]# echo "3" > //proc/acpi/fan/C31B/state
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost ~]# echo "0" > //proc/acpi/fan/C31B/state
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost ~]# echo "3x" > //proc/acpi/fan/C31B/state
-bash: echo: write error: Invalid argument
[root@localhost ~]#

Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

ACPI: fix checkpatch.pl complaints in scan.c

http://bugzilla.kernel.org/show_bug.cgi?id=9772

Signed-off-by: Alok N Kataria <akataria@vmware.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

Fujitsu-laptop update

Add additional capabilities to the Fujitsu-laptop driver.

 * Brightness hotkey actions are sent to userspace. This can be disabled
   using a module parameter if it causes issues with models which handle
   these keys transparently in the BIOS.

 * Actions of additional hotkeys found on some Fujitsu models (eg: the
   suspend key and the dedicated "power on passphrase" keys) are broadcast
   to userspace.

 * An alternative brightness control method used by some Fujitsu models
   (for example, the S6410) is now supported, enabling software brightness
   controls on models using this method.

 * DMI-based module aliases are configured for the S6410 and S7020.

 * The current LCD brightness after booting should now be reflected in the
   standard backlight interface sysfs file (previously it was always set to
   0).  The platform brightness sysfs interface has always been fine.

Thanks go to Peter Gruber who provided a significant portion of this code
and tested various iterations of the patch on his S6410.

Signed-off-by: Peter Gruber <nokos@gmx.net>
Signed-off-by: Jonathan Woithe <jwoithe@physics.adelaide.edu.au>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

ACPI: change processors from array to per_cpu variable

Change processors from an array sized by NR_CPUS to a per_cpu variable.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

misc,acpi,backlight: compal Laptop Extras

This is driver for Compal Laptop: FL90/IFL90, based on MSI driver.

This driver exports a few files in /sys/devices/platform/compal-laptop/:
 lcd_level - screen brightness: contains a single integer in the range 0..7 (rw)
 wlan - wlan subsystem state: contains 0 or 1 (rw)
 bluetooth - bluetooth subsystem state: contains 0 or 1 (rw)
 raw - raw value taken from embedded controller register (ro)

In addition to these platform device attributes the driver registers itself
in the Linux backlight control subsystem and is available to userspace under
/sys/class/backlight/compal-laptop/.

Signed-off-by: Cezary Jackiewicz <cezary.jackiewicz@gmail.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Len Brown <lenb@kernel.org>
Cc: Alexey Starikovskiy <aystarik@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>

create sysfs link from acpi device to sysdev for cpu

Sys I/F under acpi device node and sysdev device node are both
needed for cpu hot-removal. User space need this link so that
they know they are poking the sys I/F for the same cpu.
http://bugzilla.kernel.org/show_bug.cgi?id=9772

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

force offline the processor during hot-removal

The ACPI device node for the cpu has already been unregistered
when acpi_processor_handle_eject is called.
Thus we should offline the cpu and continue, rather than a failure here.
http://bugzilla.kernel.org/show_bug.cgi?id=9772

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

fix a deadlock issue when poking "eject" file

"/sys/devices/LNXSYSTM:00/.../eject" is used to evaluate _EJx method
and eject a device in user space.
But system hangs when poking the "eject" file because that
the device hot-removal code invoke the driver .remove method which will
try to remove the "eject" file as a result.

Queues the hot-removal function for deferred execution in this patch.
http://bugzilla.kernel.org/show_bug.cgi?id=9772

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6

* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: (44 commits)
  hwmon: (w83l786ng) Convert to a new-style i2c driver
  hwmon: (w83l785ts) Convert to a new-style i2c driver
  hwmon: (w83793) Convert to a new-style i2c driver
  hwmon: (w83792d) Convert to a new-style i2c driver
  hwmon: (w83791d) Convert to a new-style i2c driver
  hwmon: (thmc50) Convert to a new-style i2c driver
  hwmon: (smsc47m192) Convert to a new-style i2c driver
  hwmon: (max6650) Convert to a new-style i2c driver
  hwmon: (max1619) Convert to a new-style i2c driver
  hwmon: (lm93) Convert to a new-style i2c driver
  hwmon: (lm92) Convert to a new-style i2c driver
  hwmon: (lm90) Convert to a new-style i2c driver
  hwmon: (lm87) Convert to a new-style i2c driver
  hwmon: (lm83) Convert to a new-style i2c driver
  hwmon: (lm80) Convert to a new-style i2c driver
  hwmon: (lm77) Convert to a new-style i2c driver
  hwmon: (lm63) Convert to a new-style i2c driver
  hwmon: (gl520sm) Convert to a new-style i2c driver
  hwmon: (gl518sm) Convert to a new-style i2c driver
  hwmon: (fscpos) Convert to a new-style i2c driver
  ...

Fix compile issues in fs/compat_ioctl.c when CONFIG_BLOCK is disabled

Fix fs/compat_ioctl.c to handle CONFIG_BLOCK=n, CONFIG_SCSI=n to avoid
build errors:

In file included from include/scsi/scsi.h:12,
                 from fs/compat_ioctl.c:71:
include/scsi/scsi_cmnd.h:27:25: warning: "BLK_MAX_CDB" is not defined
include/scsi/scsi_cmnd.h:28:3: error: #error MAX_COMMAND_SIZE can not be bigger than BLK_MAX_CDB
In file included from include/scsi/scsi.h:12,
                 from fs/compat_ioctl.c:71:
include/scsi/scsi_cmnd.h: In function 'scsi_bidi_cmnd':
include/scsi/scsi_cmnd.h:182: error: implicit declaration of function 'blk_bidi_rq'
include/scsi/scsi_cmnd.h:183: error: dereferencing pointer to incomplete type
include/scsi/scsi_cmnd.h: In function 'scsi_in':
include/scsi/scsi_cmnd.h:189: error: dereferencing pointer to incomplete type

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

powerpc/ep8248e: Fix compile problem if !CONFIG_FS_ENET

If we don't enable FS_ENET we get build issues:

arch/powerpc/platforms/built-in.o: In function `ep8248e_mdio_probe':
arch/powerpc/platforms/82xx/ep8248e.c:129: undefined reference to `alloc_mdio_bitbang'
arch/powerpc/platforms/82xx/ep8248e.c:143: undefined reference to `mdiobus_register'

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Fix MIPS cross-compile problem

Crosscompiling on a Fedora 9 machine running gcc 4.3.0 as its host compiler
and gcc 3.4.6 for the mips-linux target results in the following build
error:

$ make malta_defconfig
$ make
cc1: error: unrecognized command line option "-fno-stack-protector"
scripts/kconfig/conf -s arch/mips/Kconfig
cc1: error: unrecognized command line option "-fno-stack-protector"

The arch Makefile is included too late so the host compiler is feature
tested, not the crosscompiler as intended and thus the Makefile applies
adds -fno-stack-protector to crosscompiler's flags which fails for gcc
3.4.6.  The bug was introduced by e06b8b98da071f7dd78fb7822991694288047df0
in 2.6.25; 35bb5b1e0e84cfa1a8906f7e6a77f391ff315791 did add more flags
testing before the arch Makefile inclusion.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

hwmon: (w83l786ng) Convert to a new-style i2c driver

The new-style w83l786ng driver implements the optional detect()
callback to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Kevin Lo <kevlo@kevlo.org>

hwmon: (w83l785ts) Convert to a new-style i2c driver

The new-style w83l785ts driver implements the optional detect()
callback to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (w83793) Convert to a new-style i2c driver

The new-style w83793 driver implements the optional detect()
callback to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (w83792d) Convert to a new-style i2c driver

The new-style w83792d driver implements the optional detect()
callback to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (w83791d) Convert to a new-style i2c driver

The new-style w83791d driver implements the optional detect()
callback to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Marc Hulsman <m.hulsman@tudelft.nl>

hwmon: (thmc50) Convert to a new-style i2c driver

The new-style thmc50 driver implements the optional detect()
callback to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Krzysztof Helt <krzysztof.h1@wp.pl>

hwmon: (smsc47m192) Convert to a new-style i2c driver

The new-style smsc47m192 driver implements the optional detect()
callback to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Hartmut Rick <linux@rick.claranet.de>

hwmon: (max6650) Convert to a new-style i2c driver

The new-style max6650 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Hans J. Koch <hjk@linutronix.de>

hwmon: (max1619) Convert to a new-style i2c driver

The new-style max1619 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Alexey Fisher <fishor@mail.ru>

hwmon: (lm93) Convert to a new-style i2c driver

The new-style lm93 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Mark M. Hoffman <mhoffman@lightlink.com>
Cc: Eric J. Bowersox <ericb@aspsys.com>
Cc: Carsten Emde <cbe@osadl.org>
Cc: Hans J. Koch <hjk@linutronix.de>

hwmon: (lm92) Convert to a new-style i2c driver

The new-style lm92 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (lm90) Convert to a new-style i2c driver

The new-style lm90 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (lm87) Convert to a new-style i2c driver

The new-style lm87 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Ben Hutchings <bhutchings@solarflare.com>

hwmon: (lm83) Convert to a new-style i2c driver

The new-style lm83 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (lm80) Convert to a new-style i2c driver

The new-style lm80 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (lm77) Convert to a new-style i2c driver

The new-style lm77 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Andras Bali <drewie@freemail.hu>

hwmon: (lm63) Convert to a new-style i2c driver

The new-style lm63 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (gl520sm) Convert to a new-style i2c driver

The new-style gl520sm driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Maarten Deprez <maartendeprez@users.sourceforge.net>

hwmon: (gl518sm) Convert to a new-style i2c driver

The new-style gl518sm driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (fscpos) Convert to a new-style i2c driver

The new-style fscpos driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (fschmd) Convert to a new-style i2c driver

The new-style fschmd driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Hans de Goede <j.w.r.degoede@hhs.nl>

hwmon: (fscher) Convert to a new-style i2c driver

The new-style fscher driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Reinhard Nissl <rnissl@gmx.de>

hwmon: (f75375s) Drop legacy i2c driver

Drop the legacy f75375s i2c driver, and add a detect callback to the
new-style i2c driver to achieve the same functionality.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Riku Voipio <riku.voipio@movial.fi>

hwmon: (ds1621) Convert to a new-style i2c driver

The new-style ds1621 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (atxp1) Convert to a new-style i2c driver

The new-style atxp1 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (asb100) Convert to a new-style i2c driver

The new-style asb100 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (adt7473) Convert to a new-style i2c driver

The new-style adt7473 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Darrick J. Wong <djwong@us.ibm.com>

hwmon: (adt7470) Convert to a new-style i2c driver

The new-style adt7470 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Darrick J. Wong <djwong@us.ibm.com>

hwmon: (ads7828) Convert to a new-style i2c driver

The new-style ads7828 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (adm9240) Convert to a new-style i2c driver

The new-style adm9240 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Grant Coady <gcoady.lk@gmail.com>

hwmon: (adm1031) Convert to a new-style i2c driver

The new-style adm1031 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Alexandre d'Alton <alex@alexdalton.org>

hwmon: (adm1029) Convert to a new-style i2c driver

The new-style adm1029 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Corentin Labbe <corentin.labbe@geomatys.fr>

hwmon: (adm1026) Convert to a new-style i2c driver

The new-style adm1026 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (adm1025) Convert to a new-style i2c driver

The new-style adm1025 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (adm1021) Convert to a new-style i2c driver

The new-style adm1021 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

hwmon: (ad7418) Convert to a new-style i2c driver

The ad7418 driver is only used on embedded platforms where i2c
devices can easily be declared in platform code. Thus a new-style
i2c driver makes perfect sense. This lets us get rid of quirky
detection code (these chips have no identification registers) and
shrinks the binary driver size by 38%.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>

w1/ds2482: Convert to a new-style driver

The new-style ds2482 driver implements the optional detect() callback
to cover the use cases of the legacy driver. I'm curious if anyone
really needs this though, so it might be removed in the feature.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

i2c: Convert the max6875 driver to a new-style i2c driver

The new-style max6875 driver implements the optional detect() callback
to cover the use cases of the legacy driver. I'm curious if anyone
really needs this though, so it might be removed in the feature.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

i2c: Convert the pca9539 driver to a new-style i2c driver

The new-style pca9539 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Warning: users will now have to use the force module parameter to get
the driver to attach to their device. That's not a bad thing as these
devices can't be detected anyway.

Note that this doesn't change the fact that this driver is deprecated
in favor of gpio/pca953x.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

i2c: Convert the pcf8575 driver to a new-style i2c driver

The new-style pcf8575 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Warning: users will now have to use the force module parameter to get
the driver to attach to their device. That's not a bad thing as these
devices can't be detected anyway.

Note that this doesn't change the fact that this driver is deprecated
in favor of gpio/pcf857x.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

i2c: Convert the pcf8574 driver to a new-style i2c driver

The new-style pcf8574 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Warning: users will now have to use the force module parameter to get
the driver to attach to their device. That's not a bad thing as these
devices can't be detected anyway.

Note that this doesn't change the fact that this driver is deprecated
in favor of gpio/pcf857x.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

i2c: Convert the pcf8591 driver to a new-style i2c driver

The new-style pcf8591 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

i2c: Convert the eeprom driver to a new-style i2c driver

The new-style eeprom driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

i2c: Clear i2c_adapter.dev on adapter removal

Clear i2c_adapter.dev on adapter removal. This makes it possible to
re-add the adapter at a later point, which some drivers
(i2c-amd756-s4882, i2c-nforce2-s4985) actually do.

This fixes a bug reported by John Stultz here:
  http://lkml.org/lkml/2008/7/15/720
and by Ingo Molar there:
  http://lkml.org/lkml/2008/7/16/78

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: John Stultz <johnstul@us.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>

Fix 'make clean' and .gitignore for firmware/ directory.

Provide a .gitignore file, and fix a typo which prevented some of the
generated binary files from being removed on 'make clean'.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Reported-and-tested-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>