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2008-04-27fix idle (arch, acpi and apm) and lockdepPeter Zijlstra
OK, so 25-mm1 gave a lockdep error which made me look into this. The first thing that I noticed was the horrible mess; the second thing I saw was hacks like: 71e93d15612c61c2e26a169567becf088e71b8ff The problem is that arch idle routines are somewhat inconsitent with their IRQ state handling and instead of fixing _that_, we go paper over the problem. So the thing I've tried to do is set a standard for idle routines and fix them all up to adhere to that. So the rules are: idle routines are entered with IRQs disabled idle routines will exit with IRQs enabled Nearly all already did this in one form or another. Merge the 32 and 64 bit bits so they no longer have different bugs. As for the actual lockdep warning; __sti_mwait() did a plainly un-annotated irq-enable. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Tested-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-21Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/juhl/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/juhl/trivial: (24 commits) DOC: A couple corrections and clarifications in USB doc. Generate a slightly more informative error msg for bad HZ fix typo "is" -> "if" in Makefile ext*: spelling fix prefered -> preferred DOCUMENTATION: Use newer DEFINE_SPINLOCK macro in docs. KEYS: Fix the comment to match the file name in rxrpc-type.h. RAID: remove trailing space from printk line DMA engine: typo fixes Remove unused MAX_NODES_SHIFT MAINTAINERS: Clarify access to OCFS2 development mailing list. V4L: Storage class should be before const qualifier (sn9c102) V4L: Storage class should be before const qualifier sonypi: Storage class should be before const qualifier intel_menlow: Storage class should be before const qualifier DVB: Storage class should be before const qualifier arm: Storage class should be before const qualifier ALSA: Storage class should be before const qualifier acpi: Storage class should be before const qualifier firmware_sample_driver.c: fix coding style MAINTAINERS: Add ati_remote2 driver ... Fixed up trivial conflicts in firmware_sample_driver.c
2008-04-21acpi: Storage class should be before const qualifierTobias Klauser
The C99 specification states in section 6.11.5: The placement of a storage-class specifier other than at the beginning of the declaration specifiers in a declaration is an obsolescent feature. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
2008-04-19generic: use new set_cpus_allowed_ptr functionMike Travis
* Use new set_cpus_allowed_ptr() function added by previous patch, which instead of passing the "newly allowed cpus" cpumask_t arg by value, pass it by pointer: -int set_cpus_allowed(struct task_struct *p, cpumask_t new_mask) +int set_cpus_allowed_ptr(struct task_struct *p, const cpumask_t *new_mask) * Modify CPU_MASK_ALL Depends on: [sched-devel]: sched: add new set_cpus_allowed_ptr function Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17Add down_timeout and change ACPI to use itMatthew Wilcox
ACPI currently emulates a timeout for semaphores with calls to down_trylock and sleep. This produces horrible behaviour in terms of fairness and excessive wakeups. Now that we have a unified semaphore implementation, adding a real down_trylock is almost trivial. Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2008-04-15acpi: bus: check once more for an empty list after locking itChuck Ebbert
List could have become empty after the unlocked check that was made earlier, so check again inside the lock. Should fix https://bugzilla.redhat.com/show_bug.cgi?id=427765 Signed-off-by: Chuck Ebbert <cebbert@redhat.com> Cc: <stable@kernel.org> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-08acpi: fix "buggy BIOS check" when CPUs are hot removedAlok Kataria
Fixes a BUG in ACPI hotplugging. processor_device_array[pr->id] needs to be set to NULL when removing a CPU. Else the "buggy BIOS check" in acpi_processor_start mistakenly fires when a CPU is removed from the system and then later re-added. Signed-off-by: Alok N Kataria <akataria@vmware.com> Signed-off-by: Dan Arai <arai@vmware.com> Cc: Len Brown <lenb@kernel.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-08acpi thermal: fix result checkKrzysztof Helt
thermal_zone_device_register() uses the ERR_PTR macro on its return values. A correct check is to use the IS_ERR() macro. The 2.6.25 kernels panic on Compaq AP550 without this patch as it has more then 10 (THERMAL_MAX_TRIPS) trip points (there are 12). Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Len Brown <lenb@kernel.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-05Revert "ACPI: Ignore _BQC object when registering backlight device"Linus Torvalds
This reverts commit 7c0ea45be4f114d85ee35caeead8e1660699c46f which caused a regression with the backlight being set to off when a laptop doesn't have a _BQC entry to query the actual backlight value. The code blindly then falls back on a value of 0. See http://bugzilla.kernel.org/show_bug.cgi?id=10387 http://lkml.org/lkml/2008/4/2/366 for details. Bisected-and-reported-by: Andrey Borzenkov <arvidjaar@mail.ru> Cc: Zhao Yakui <yakui.zhao@intel.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Len Brown <len.brown@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-01ACPI PM: Restore the 2.6.24 suspend orderingRafael J. Wysocki
Some time ago it turned out that our suspend code ordering broke some NVidia-based systems that hung if _PTS was executed with one of the PCI devices, specifically a USB controller, in a low power state. Then, it was noticed that the suspend code ordering was not compliant with ACPI 1.0, although it was compliant with ACPI 2.0 (and later), and it was argued that the code had to be changed for that reason (ref. http://bugzilla.kernel.org/show_bug.cgi?id=9528). So we did, but evidently we did wrong, because it's now turning out that some systems have been broken by this change. Refs: http://bugzilla.kernel.org/show_bug.cgi?id=10340 https://bugzilla.novell.com/show_bug.cgi?id=374217#c16 [ I said at that time that something like this might happend, but the majority of people involved thought that it was improbable due to the necessity to preserve the compliance of hardware with ACPI 1.0. ] This actually is a quite serious regression from 2.6.24. Moreover, the ACPI 1.0 ordering of suspend code introduced another issue that I have only noticed recently. Namely, if the suspend of one of devices fails, the already suspended devices will be resumed without executing _WAK before, which leads to problems on some systems (for example, in such situations thermal management is broken on my HP nx6325). Consequently, it also breaks suspend debugging on the affected systems. Note also, that the requirement to execute _PTS before suspending devices does not really make sense, because the device in question may be put into a low power state at run time for a reason unrelated to a system-wide suspend. For the reasons outlined above, the change of the suspend ordering should be reverted, which is done by the patch below. [ Felix Möller: "I am the reporter from the original Novell Bug: https://bugzilla.novell.com/show_bug.cgi?id=374217 I just tried current git head (two hours ago) with the patch (the one from the beginning of this thread) from Rafael and without it. With the patch my MacBook does suspend without it does not." ] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Tested-by: Felix Möller <felix@derklecks.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-28revert "ACPI: drivers/acpi: elide a non-zero test on a result that is never 0"Ingo Molnar
Revert commit 1192aeb957402b45f311895f124e4ca41206843c ("ACPI: drivers/acpi: elide a non-zero test on a result that is never 0") because it turns out that thermal_cooling_device_register() does actually return NULL if CONFIG_THERMAL is turned off (then the routine turns into a dummy inline routine in the header files that returns NULL unconditionally). This was found with randconfig testing, causing a crash during bootup: initcall 0x78878534 ran for 13 msecs: acpi_button_init+0x0/0x51() Calling initcall 0x78878585: acpi_fan_init+0x0/0x2c() BUG: unable to handle kernel NULL pointer dereference at 00000000 IP: [<782b8ad0>] acpi_fan_add+0x7d/0xfd *pde = 00000000 Oops: 0000 [#1] Modules linked in: Pid: 1, comm: swapper Not tainted (2.6.25-rc7-sched-devel.git-x86-latest.git #14) EIP: 0060:[<782b8ad0>] EFLAGS: 00010246 CPU: 0 EIP is at acpi_fan_add+0x7d/0xfd EAX: b787c718 EBX: b787c400 ECX: b782ceb4 EDX: 00000007 ESI: 00000000 EDI: b787c6f4 EBP: b782cee0 ESP: b782cecc DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 Process swapper (pid: 1, ti=b782c000 task=b7846000 task.ti=b782c000) Stack: b787c459 00000000 b787c400 78790888 b787c60c b782cef8 782b6fb8 ffffffda b787c60c 00000000 78790958 b782cf0c 783005d7 b787c60c 78790958 78790584 b782cf1c 783007f6 b782cf28 00000000 b782cf40 782ffc4a 78790958 b794d558 Call Trace: [<782b6fb8>] ? acpi_device_probe+0x3e/0xdb [<783005d7>] ? driver_probe_device+0x82/0xfc [<783007f6>] ? __driver_attach+0x3a/0x70 [<782ffc4a>] ? bus_for_each_dev+0x3e/0x60 [<7830048c>] ? driver_attach+0x14/0x16 [<783007bc>] ? __driver_attach+0x0/0x70 [<7830006a>] ? bus_add_driver+0x9d/0x1b0 [<783008c3>] ? driver_register+0x47/0xa3 [<7813db00>] ? timespec_to_ktime+0x9/0xc [<782b7331>] ? acpi_bus_register_driver+0x3a/0x3c [<78878592>] ? acpi_fan_init+0xd/0x2c [<78863656>] ? kernel_init+0xac/0x1f9 [<788635aa>] ? kernel_init+0x0/0x1f9 [<78114563>] ? kernel_thread_helper+0x7/0x10 ======================= Code: 6e 78 e8 57 44 e7 ff 58 e9 93 00 00 00 8b 55 f0 8d bb f4 02 00 00 80 4b 2d 10 8b 03 e8 87 cb ff ff 8d 83 18 03 00 00 80 63 2d ef <ff> 35 00 00 00 00 50 68 e8 9c 6e 78 e8 22 44 e7 ff b9 b6 9c 6e EIP: [<782b8ad0>] acpi_fan_add+0x7d/0xfd SS:ESP 0068:b782cecc ---[ end trace 778e504de7e3b1e3 ]--- Kernel panic - not syncing: Attempted to kill init! Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Julia Lawall <julia@diku.dk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-27ACPI: drivers/acpi: elide a non-zero test on a result that is never 0Julia Lawall
The function thermal_cooling_device_register always returns either a valid pointer or a value made with ERR_PTR, so a test for non-zero on the result will always succeed. The problem was found using the following semantic match. (http://www.emn.fr/x-info/coccinelle/) //<smpl> @a@ expression E, E1; statement S,S1; position p; @@ E = thermal_cooling_device_register(...) ... when != E = E1 if@p (E) S else S1 @n@ position a.p; expression E,E1; statement S,S1; @@ E = NULL ... when != E = E1 if@p (E) S else S1 @depends on !n@ expression E; statement S,S1; position a.p; @@ * if@p (E) S else S1 //</smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-26Merge branches 'release', 'idle', 'redhat-bugzilla-436589', 'sbs' and ↵Len Brown
'video' into release
2008-03-26cpuidle: fix 100% C0 statistics regressionVenki Pallipadi
commit 9b12e18cdc1553de62d931e73443c806347cd974 'ACPI: cpuidle: Support C1 idle time accounting' was implicated in a 100% C0 idle regression. http://bugzilla.kernel.org/show_bug.cgi?id=10076 It pointed out a potential problem where the menu governor may get confused by the C-state residency time from poll idle or C1 idle, where this timing info is not accurate. This inaccuracy is due to interrupts being handled before we account for C-state exit. Do not mark TIME_VALID for CO poll state. Mark C1 time as valid only with the MWAIT (CSTATE_FFH) entry method. This makes governors use the timing information only when it is correct and eliminates any wrong policy decisions that may result from invalid timing information. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-26ACPI: fix mis-merge -- invoke acpi_unlazy_tlb() only on C3 entryVenki Pallipadi
This original patch http://ussg.iu.edu/hypermail/linux/kernel/0712.2/1451.html was intending to add acpi_unlazy_tlb() to acpi_idle_enter_bm(), which is used for C3 entry. But it was merged incorrectly as commmit bde6f5f59c2b2b48a7a849c129d5b48838fe77ee 'x86: voluntary leave_mm before entering ACPI C3' so the call was instead added to acpi_idle_enter_simple() (which is C2 entry routine), probably due to identical context in that function. Move the call back to acpi_idle_enter_bm(). Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-25ACPI: fix a regression of ACPI device driver autoloadingZhang Rui
commit 3620f2f2f39e7870cf1a4fb2e34063a142f28716 sets the cid of ACPI video/dock/bay device and leaves the hid empty. As a result, "modalias" should export the cid for devices which don't have a hid. ACPI Video driver is not autoloaded with commit 3620f2f2f39e7870cf1a4fb2e34063a142f28716 applied. "cat /sys/.../device:03(acpi video bus)/modalias" shows nothing. ACPI Video driver is autoloaded after revert that commit. "cat /sys/.../LNXVIDEO:0x/modalias" shows "acpi:LNXVIDEO:" ACPI Video driver is autoloaded with commit 3620f2f2f39e7870cf1a4fb2e34063a142f28716 and this patch applied. "cat /sys/.../device:03(acpi video bus)/modalias" shows "acpi:LNXVIDEO:" Signed-off-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-25ACPI: fix Medion _PRT quirk (use "ISA_", not "ISA")Bjorn Helgaas
This fixes the builtin RTL8139 NIC on the Medion MD9580-F laptop. The BIOS reports the interrupt routing incorrectly. I recently added a quirk to work around this, and this patch fixes a typo in the quirk. We pad every ACPI pathname component to four characters, so ".ISA." will never match anything. We need ".ISA_." instead. Thank you Johann-Nikolaus Andreae <johann-nikolaus.andreae@nacs.de> for patiently testing this patch. See http://bugzilla.kernel.org/show_bug.cgi?id=4773 Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-18Revert "ACPI: EC: Handle IRQ storm on Acer laptops"Alexey Starikovskiy
This reverts commit 2c81ce4c9c37b910210f2640c28e98a0c398dc26. It caused several new troubles (eg suspend slowdown bisected down to this patch by Pavel Machek), so just revert it for now. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Cc: Pavel Machek <pavel@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-18Merge branches 'release' and 'dock' into releaseLen Brown
2008-03-18ACPI: Set flag DOCK_UNDOCKING when triggered via sysfsHolger Macht
begin_undock() is only called when triggered via a acpi notify handler (pressing the undock button on the dock station), but complete_undock() is always called after the eject. So if a undock is triggered through a sysfs write, the flag DOCK_UNDOCKING has to be set for the dock station, too. Otherwise this will freeze the system hard. Signed-off-by: Holger Macht <hmacht@suse.de> Acked-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18ACPI: SBS: remove typo from sbchc.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18Merge branches 'release', 'asus', 'bugzilla-8573', 'bugzilla-9995', ↵Len Brown
'bugzilla-10272', 'lockdep' and 'thermal' into release
2008-03-18Revert "ACPI: video: Ignore devices that aren't present in hardware"Len Brown
This reverts commit 0119509c4fbc9adcef1472817fda295334612976. http://bugzilla.kernel.org/show_bug.cgi?id=9995 Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18asus_acpi: remove misleading maskJulia Lawall
led_out is boolean, so there is no functional change here, but apparently an extra mask with 1 caused some style checkers to flag this as logic bug. Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Luca Tettamanti <kronos.it@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18Revert "ACPI: video: Ignore ACPI video devices that aren't present in hardware"Len Brown
This reverts commit 3fa2cdcc45a0176de15cac9dbf4ed2834ebf8932. http://bugzilla.kernel.org/show_bug.cgi?id=9995 Signed-off-by: Len Brown <len.brown>
2008-03-17ACPI: battery: Don't return -EFAIL on broken packages.Alexey Starikovskiy
Acer BIOS has a bug which is exposed when a dead battery is present. The package template that is used to describe battery status is over-written with sane values when the battery is live. But when the batter is dead, a bogus reference in the template is used. In this case, Linux returns a fault, when instead it should simply return that it doesn't know the missing value. http://bugzilla.kernel.org/show_bug.cgi?id=8573 http://bugzilla.kernel.org/show_bug.cgi?id=10202 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-15ACPI: Remove ACPI_CUSTOM_DSDT_INITRD optionLinus Torvalds
This essentially reverts commit 71fc47a9adf8ee89e5c96a47222915c5485ac437 ("ACPI: basic initramfs DSDT override support"), because the code simply isn't ready. It did ugly things to the init sequence to populate the rootfs image early, but that just ended up showing other problems with the whole approach. The fact is, the VFS layer simply isn't initialized this early, and the relevant ACPI code should either run much later, or this shouldn't be done at all. For 2.6.25, we'll just pick the latter option. We can revisit this concept later if necessary. Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Tilman Schmidt <tilman@imap.cc> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Thomas Renninger <trenn@suse.de> Cc: Eric Piel <eric.piel@tremplin-utc.net> Cc: Len Brown <len.brown@intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Markus Gaugusch <dsdt@gaugusch.at> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-14ACPI: lockdep warning on boot, 2.6.25-rc5Venki Pallipadi
This avoids the harmless WARNING by lockdep in acpi_processor_idle(). The reason for WARNING is because at the depth of idle handling code, some of the idle handlers disable interrupts, some times, while returning from the idle handler. After return, acpi_processor_idle and few other routines in the file did an unconditional local_irq_enable(). With LOCKDEP, enabling irq when it is already enabled generates the below WARNING. > > [ 0.593038] ------------[ cut here ]------------ > > [ 0.593267] WARNING: at kernel/lockdep.c:2035 trace_hardirqs_on+0xa0/0x115() > > [ 0.593596] Modules linked in: > > [ 0.593756] Pid: 0, comm: swapper Not tainted 2.6.25-rc5 #8 > > [ 0.594017] > > [ 0.594017] Call Trace: > > [ 0.594216] [<ffffffff80231663>] warn_on_slowpath+0x58/0x6b > > [ 0.594495] [<ffffffff80495966>] ? _spin_unlock_irqrestore+0x38/0x47 > > [ 0.594809] [<ffffffff80329a86>] ? acpi_os_release_lock+0x9/0xb > > [ 0.595103] [<ffffffff80337840>] ? acpi_set_register+0x161/0x173 > > [ 0.595401] [<ffffffff8034c8d4>] ? acpi_processor_idle+0x1de/0x546 > > [ 0.595706] [<ffffffff8020a23b>] ? default_idle+0x0/0x73 > > [ 0.595970] [<ffffffff8024fc0e>] trace_hardirqs_on+0xa0/0x115 > > [ 0.596049] [<ffffffff8034c6f6>] ? acpi_processor_idle+0x0/0x546 > > [ 0.596346] [<ffffffff8034c8d4>] acpi_processor_idle+0x1de/0x546 > > [ 0.596642] [<ffffffff8020a23b>] ? default_idle+0x0/0x73 > > [ 0.596912] [<ffffffff8034c6f6>] ? acpi_processor_idle+0x0/0x546 > > [ 0.597209] [<ffffffff8020a23b>] ? default_idle+0x0/0x73 > > [ 0.597472] [<ffffffff8020a355>] cpu_idle+0xa7/0xd1 > > [ 0.597717] [<ffffffff80485fa1>] rest_init+0x55/0x57 > > [ 0.597957] [<ffffffff8062fb49>] start_kernel+0x29d/0x2a8 > > [ 0.598215] [<ffffffff8062f1da>] _sinittext+0x1da/0x1e1 > > [ 0.598464] > > [ 0.598546] ---[ end trace 778e504de7e3b1e3 ]--- Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-13Merge branches 'release', 'ejd', 'sony' and 'wmi' into releaseLen Brown
2008-03-13Merge branches 'release', 'button-sysfs', 'misc', 'mismatch', 'randconfig' ↵Len Brown
and 'toshiba' into release
2008-03-13Merge branches 'release' and 'thermal' into releaseLen Brown
2008-03-13Merge branches 'release', 'bugzilla-8570', 'bugzilla-9966', 'bugzilla-9998', ↵Len Brown
'bugzilla-10100', 'bugzilla-10132', 'bugzilla-10138' and 'bugzilla-10206' into release
2008-03-13ACPI: thermal: show temperature in millidegree CelsiusZhang, Rui
as now required by the generic thermal I/F Signed-off-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-12ACPI: buffer array too short in drivers/acpi/system.cJohann Felix Soden
Since "ff_gbl_lock" has a length of 11 chars and is copied with sprintf to char buffer[10], there is a problem. We need char buffer[12] because of the closing zero byte. Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11ACPICA: Warn if packages with invalid references are evaluatedThomas Renninger
And return an error to avoid NULL pointer access by the caller Lin Ming's patch avoids corrupted mem access when BIOS has invalid references included, the handle is now zero instead of corrupted. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11ACPI: add _PRT quirks to work around broken firmwareBjorn Helgaas
This patch works around incorrect _PRT (PCI interrupt routing) information from firmware. This does not fix any regressions and can wait for the next kernel release. On the Medion MD9580-F laptop, the BIOS says the builtin RTL8139 NIC interrupt at 00:09.0[A] is connected to \_SB.PCI0.ISA.LNKA, but it's really connected to \_SB.PCI0.ISA.LNKB. Before this patch, the workaround was to use "pci=routeirq". More details at http://bugzilla.kernel.org/show_bug.cgi?id=4773. On the Dell OptiPlex GX1, the BIOS says the PCI slot interrupt 00:0d[A] is connected to LNKB, but it's really connected to LNKA. Before this patch, the workaround was to use "pci=routeirq". Pierre Ossman tested a previous version of this patch and confirmed that it fixed the problem. More details at http://bugzilla.kernel.org/show_bug.cgi?id=5044. On the HP t5710 thin client, the BIOS says the builtin Radeon video interrupt at 01:00[A] is connected to LNK1, but it's really connected to LNK3. The previous workaround was to use a custom DSDT. I tested this patch and verified that it fixes the problem. More details at http://bugzilla.kernel.org/show_bug.cgi?id=10138. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11ACPI: Ignore _BQC object when registering backlight deviceZhao Yakui
According to acpi spec , the objects of _BCL and _BCM are required if integrated LCD is present and supports brightness level .The _BQC is the optional object. So the _BQC object is ignored when the backlight device is registered in ACPI video driver. http://bugzilla.kernel.org/show_bug.cgi?id=10206 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11ACPI: WMI: Clean up handling of spec violating data blocksCarlos Corbacho
Acer violate the ACPI-WMI spec by declaring some of their data blocks as expensive, but with no corresponding WCxx method. There is already some workaround code in to handle the initial WCxx call (we just ignore a failure here); but we need to properly check if the second, "clean up", WCxx call is actually needed or not, rather than fail simply because it isn't there. Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11ACPI: use ACPI_DEBUG_PRINT instead of printk in acpi_processor_hotplug_notify()Glauber Costa
For consistency, use ACPI_DEBUG_PRINT instead of printk in acpi_processor_hotplug_notify() for BUS_CHECK and DEVICE_CHECK events Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11ACPI: button: make real parent for input devices in device treeAndrey Borzenkov
Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru> Cc: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11toshiba_acpi: Enable autoloadingarvidjaar@mail.ru
This adds aliases to enable autoloading of toishiba_acpi. Two aliases are defined - TOS6200 (for \\_SB_.VALD.GHCI) and TSO1900 (for \\_SB_.VALZ.GHCI). This allows toishiba_acpi to be autoloaded on systems that provide those devices. Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru> Cc: Olivier Blin <blino@mandriva.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11ACPI: EC: Handle IRQ storm on Acer laptopsAlexey Starikovskiy
On some Acer systems, the HW fails to clear the GPE source, causing an interrupt storm. So in EC interrupt mode, we count how many interrupts we receive when waiting. If we get more than 5, we give up on interrupt mode and revert to polling mode. Also, for polling mode to work on Acers, we need to insert a delay. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11ACPI: replace remaining __FUNCTION__ occurrencesHarvey Harrison
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11ACPI: Fix a duplicate log levelJean Delvare
Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11Revert "ACPI: EC: Use proper handle for boot EC"Len Brown
This reverts commit 208c70a45624400fafd7511b96bc426bf01f8f5e. http://bugzilla.kernel.org/show_bug.cgi?id=10100 Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11ACPI: fix boot oops regression in thermalLin Ming
Fix a memory overflow bug when copying NULL internal package element object to external. http://bugzilla.kernel.org/show_bug.cgi?id=10132 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-02-23ACPI Exception (): AE_NOT_FOUND, Processor Device is not present (update)Zhang Rui
update cfaf3747ff3d431fba33f75083b7f50f58ae22ff ACPI: ACPI Exception (): AE_NOT_FOUND, Processor Device is not present is_processor_present is only called in the processor hotplug case, and _STA method is mandatory at this time. We should ignore those processors that are disabled in the MADT and don't have _STA methods. Because they will never exist in this system. For the processors that don't physically exist but can be hot plugged later, we still need this debug info. http://bugzilla.kernel.org/show_bug.cgi?id=8570 Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-02-23ACPI: prevent randconfig build failure on empty ACPI_CUSTOM_DSDT_FILERandy Dunlap
Make ACPI_CUSTOM_DSDT boolean config symbol a hidden and derived value, based on the value of ACPI_CUSTOM_DSDT_FILE (string). Only the latter is presented to the user as a config option. This fixes problems with "make randconfig" setting ACPI_CUSTOM_DSDT but leaving ACPI_CUSTOM_DSDT_FILE empty/blank. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-02-21ACPI: Do not pass NULL to acpi_get_handle() when looking for _EJDHolger Macht
When trying to get the acpi_handle from an acpi_buffer, pass ACPI_ROOT_OBJECT instead of NULL to acpi_get_handle(). This fixes the detection of dock dependent bays. Signed-off-by: Holger Macht <hmacht@suse.de> Tested-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-02-21ACPI: fix section mismatch in acpi_pci_root_addSam Ravnborg
Fix following warning: WARNING: vmlinux.o(.text+0x550e85): Section mismatch in reference from the function acpi_pci_root_add() to the function .devinit.text:pci_acpi_scan_root() acpi_pci_root_add uses a __devinit annotated function and it looks like annotating it __devinit too is the correct fix. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Len Brown <len.brown@intel.com>
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