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2008-07-16ACPICA: Fix possible negative array index in acpi_ut_validate_exceptionBob Moore
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>
2008-07-16ACPICA: Update tracking macros to reduce code/data sizeJan Beulich
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>
2008-07-16ACPICA: Fix for hang on GPE method invocationBob Moore
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>
2008-07-16ACPICA: Add argument count checking to control method invocation via ↵Bob Moore
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>
2008-07-16fujitsu-laptop: depends on INPUTRandy Dunlap
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>
2008-07-16snapshot: Use pm_mutex for mutual exclusionRafael J. Wysocki
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>
2008-07-16snapshot: Push BKL down into ioctl handlersAlan Cox
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>
2008-07-16Freezer: Introduce PF_FREEZER_NOSIGRafael J. Wysocki
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>
2008-07-16APM emulation: Notify about all suspend events, not just APM invoked ones (v2)Johannes Berg
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>
2008-07-16ACPI PM: Remove obsolete Toshiba workaroundRafael J. Wysocki
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>
2008-07-16PCI ACPI: Drop the second argument of platform_pci_choose_stateRafael J. Wysocki
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>
2008-07-16ACPI PM: acpi_pm_device_sleep_state() cleanupDavid Brownell
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>
2008-07-16dock: bay: Don't call acpi_walk_namespace() when ACPI is disabled.Len Brown
Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16ACPI: don't walk tables if ACPI was disabledVegard Nossum
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>
2008-07-16acer-wmi: Remove version numberCarlos Corbacho
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>
2008-07-16acer-wmi: Add debugfs file for device detectionCarlos Corbacho
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>
2008-07-16acer-wmi: Disable device autodetection on Fujitsu Siemens Amilo Li2732Carlos Corbacho
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>
2008-07-16acer-wmi: Add EC quirk for Fujitsu Siemens Amilo Li 1718Carlos Corbacho
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>
2008-07-16acer-wmi: Respect framebuffer blanking in backlightCarlos Corbacho
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>
2008-07-16acer-wmi: Blacklist backlight on Acer Aspire 1520 & 1360 seriesCarlos Corbacho
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>
2008-07-16acer-wmi: Remove LED colour comment from documentationCarlos Corbacho
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>
2008-07-16eeepc-laptop: staticAdrian Bunk
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>
2008-07-16ACPICA: fix mutex names in debug code.Vegard Nossum
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>
2008-07-16Make GPE disable more robustBob Moore
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>
2008-07-16compal-laptop: remove unnecessary lcd_level attributeCezary Jackiewicz
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>
2008-07-16acpi: fix printk format warningRandy Dunlap
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>
2008-07-16ACPI: fix processor throttling set errorYi Yang
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>
2008-07-16ACPI: fix acpi fan state set errorYi Yang
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>
2008-07-16ACPI: fix checkpatch.pl complaints in scan.cAlok N Kataria
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>
2008-07-16Fujitsu-laptop updateJonathan Woithe
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>
2008-07-16ACPI: change processors from array to per_cpu variableMike Travis
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>
2008-07-16misc,acpi,backlight: compal Laptop ExtrasCezary Jackiewicz
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>
2008-07-16create sysfs link from acpi device to sysdev for cpuZhang Rui
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>
2008-07-16force offline the processor during hot-removalZhang Rui
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>
2008-07-16fix a deadlock issue when poking "eject" fileZhang Rui
"/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>
2008-07-16Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds
* '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 ...
2008-07-16Fix compile issues in fs/compat_ioctl.c when CONFIG_BLOCK is disabledRandy Dunlap
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>
2008-07-16powerpc/ep8248e: Fix compile problem if !CONFIG_FS_ENETKumar Gala
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>
2008-07-16Fix MIPS cross-compile problemRalf Baechle
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>
2008-07-16hwmon: (w83l786ng) Convert to a new-style i2c driverJean Delvare
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>
2008-07-16hwmon: (w83l785ts) Convert to a new-style i2c driverJean Delvare
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>
2008-07-16hwmon: (w83793) Convert to a new-style i2c driverJean Delvare
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>
2008-07-16hwmon: (w83792d) Convert to a new-style i2c driverJean Delvare
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>
2008-07-16hwmon: (w83791d) Convert to a new-style i2c driverJean Delvare
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>
2008-07-16hwmon: (thmc50) Convert to a new-style i2c driverJean Delvare
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>
2008-07-16hwmon: (smsc47m192) Convert to a new-style i2c driverJean Delvare
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>
2008-07-16hwmon: (max6650) Convert to a new-style i2c driverJean Delvare
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>
2008-07-16hwmon: (max1619) Convert to a new-style i2c driverJean Delvare
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>
2008-07-16hwmon: (lm93) Convert to a new-style i2c driverJean Delvare
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>
2008-07-16hwmon: (lm92) Convert to a new-style i2c driverJean Delvare
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>
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