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* PCI: update pci_create_slot() to take a 'hotplug' paramAlex Chiang2008-10-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Slot detection drivers can co-exist with hotplug drivers. The names of the detected/claimed slots may be different depending on module load order. For legacy reasons, we need to allow hotplug drivers to override the slot name if a detection driver is loaded first (and they find the same slots). Creating and overriding slot names should be an atomic operation, otherwise you get a locking nightmare as various drivers race to call pci_create_slot(). pci_create_slot() is already serialized by grabbing the pci_bus_sem. We update the API and add a 'hotplug' param, which is: set if the caller is a hotplug driver NULL if the caller is a detection driver pci_create_slot() does not actually use the 'hotplug' parameter in this patch. A later patch will add the logic that uses it. Cc: kristen.c.accardi@intel.com Cc: matthew@wil.cx Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* x86: sysfs: kill owner field from attributeParag Warudkar2008-10-203-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tejun's commit 7b595756ec1f49e0049a9e01a1298d53a7faaa15 made sysfs attribute->owner unnecessary. But the field was left in the structure to ease the merge. It's been over a year since that change and it is now time to start killing attribute->owner along with its users - one arch at a time! This patch is attempt #1 to get rid of attribute->owner only for CONFIG_X86_64 or CONFIG_X86_32 . We will deal with other arches later on as and when possible - avr32 will be the next since that is something I can test. Compile (make allyesconfig / make allmodconfig / custom config) and boot tested. akpm: the idea is that we put the declaration of sttribute.owner inside `#ifndef CONFIG_X86'. But that proved to be too ambitious for now because new usages kept on turning up in subsystem trees. [akpm: remove the ifdef for now] Signed-off-by: Parag Warudkar <parag.lkml@gmail.com> Cc: Greg KH <greg@kroah.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Tejun Heo <htejun@gmail.com> Cc: Len Brown <lenb@kernel.org> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Jean Delvare <khali@linux-fr.org> Cc: Roland Dreier <rolandd@cisco.com> Cc: David Brownell <david-b@pacbell.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* acpi: use bcd2bin/bin2bcdAdrian Bunk2008-10-201-9/+9
| | | | | | | | | | Change ACPI to use the new bcd2bin/bin2bcd functions instead of the obsolete BCD_TO_BIN/BIN_TO_BCD macros. Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-cmos: move wake setup from ACPI glue into RTC driverBjorn Helgaas2008-10-141-112/+0
| | | | | | | | | | | | Move rtc_wake_setup() from drivers/acpi/glue.c into the RTC driver in drivers/rtc/rtc-cmos.c. This removes the ordering constraint between the module_init(acpi_rtc_init) and the cmos_do_probe() code that depends on it. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2008-10-131-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: net/mac80211/rx.c: fix build error acpi: Make ACPI_TOSHIBA depend on INPUT. net/bfin_mac.c MDIO namespace fixes jme: remove unused #include <version.h> netfilter: remove unused #include <version.h> net: Fix off-by-one in skb_dma_map smc911x: Add support for LAN921{5,7,8} chips from SMSC qlge: remove duplicated #include wireless: remove duplicated #include net/au1000_eth.c MDIO namespace fixes net/tc35815.c: fix compilation sky2: Fix WOL regression r8169: NULL pointer dereference on r8169 load
| * acpi: Make ACPI_TOSHIBA depend on INPUT.David S. Miller2008-10-121-1/+1
| | | | | | | | | | | | Selecting INPUT_POLLDEV is not sufficient. Signed-off-by: David S. Miller <davem@davemloft.net>
* | Fix RTC wakealarm sysfs interface breakage.Linus Torvalds2008-10-121-2/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | Commit ed458df4d2470adc02762a87a9ad665d0b1a2bd4 ("PnP: move pnpacpi/pnpbios_init to after PCI init") moved the PnP RTC discovery later, and now the ACPI RTC glue code doesn't find it any more, breaking the RTC wakealarm sysfs interfaces, as reported by Rafael. This really is fairly messy, and we have several annoying ordering constraints here - the PnP code that sets up the RTC resources wants to run after the PCI resources have to be registered, which in turn needs to run after ACPI has at least enumerated the root PCI buses etc. Our initcall ordering is not fine-grained enough to make this all painless. So this moves the ACPI RTC glue ("acpi_rtc_init()") down to a regular module call, which fixes the problem Rafael has. The reason this isn't wonderful is that we really should do acpi_rtc_init before we do the rtc_cmos init, and now those two are in the same module_init() section. Which happens to work, but only because drivers/rtc is linked after drivers/acpi. In other words, we still have a very subtle ordering issue here. Grr. Reported-and-tested-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: David Brownell <david-b@pacbell.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'master' of ↵David S. Miller2008-10-082-1/+14
|\ | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/e1000e/ich8lan.c drivers/net/e1000e/netdev.c
| * ACPI: Make /proc/acpi/wakeup interface handle PCI devices (again)Rafael J. Wysocki2008-10-032-1/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Make the ACPI /proc/acpi/wakeup interface set the appropriate wake-up bits of physical devices corresponding to the ACPI devices and make those bits be set initially for devices that are enabled to wake up by default. This is needed to restore the 2.6.26 and earlier behavior for the PCI devices that were previously handled correctly with the help of the /proc/acpi/wakeup interface. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'master' of ↵David S. Miller2008-09-085-3/+12
|\ \ | |/ | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: net/mac80211/mlme.c
| *-. Merge branches 'smbus' and 'fujitsu-fix' into release-2.6.27Andi Kleen2008-09-041-0/+7
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| | * | ACPI: Avoid bogus timeout about SMbus checkZhao Yakui2008-09-041-0/+7
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the function of wait_transaction_complete when the timeout happens, OS will try to check the status of SMbus again. If the status is what OS expected, it will be regarded as the bogus timeout. Otherwise it will be treated as ETIME. http://bugzilla.kernel.org/show_bug.cgi?id=10483 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> tested-by : Oldřich Jedlička < <oldium.pro@seznam.cz> Signed-off-by: Andi Kleen <ak@linux.intel.com>
| * | Merge branch 'acpica-release-fixes' into release-2.6.27Andi Kleen2008-08-212-1/+3
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| | * | acpi: add checking for NULL early paramCyrill Gorcunov2008-08-211-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The early_param handling function could recieve NULL pointer as argument in case if user didn't enter parameter value. So we have to be ready for a such situation and do check for NULL pointer if needed. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Andi Kleen <andi@firstfloor.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@linux.intel.com>
| | * | ACPI: Change package length error to warningMing Ling2008-08-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The condition is harmless and no need to scare the user http://bugzilla.kernel.org/show_bug.cgi?id=11245 Signed-off-by: Andi Kleen <ak@linux.intel.com>
| * | | Merge branch 'compal-fix' into release-2.6.27Andi Kleen2008-08-211-1/+1
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| | * | | ACPI: Fix typo in "Disable MWAIT via DMI on broken Compal board"Dennis Jansen2008-08-211-1/+1
| | | |/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a typo in commit 2a2a64714d9c40f7705c4de1e79a5b855c7211a9 "Disable MWAIT via DMI on broken Compal board". It allows the nomwait dmi check to actually detect the Acer 5220. Signed-off-by: Dennis Jansen <dennis.jansen@web.de> Tested-by: Dennis Jansen <dennis.jansen@web.de> Acked-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
| * | | ACPI: Fix now signed module parameter.Milan Broz2008-08-181-1/+1
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
* | | | toshiba_acpi: Add support for bluetooth toggling through rfkill (v8)philipl@overt.org2008-09-052-8/+256
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's been a patch floating around for toshiba_acpi that exports an ad-hoc /proc interface to toggle the bluetooth adapter in a large number of Toshiba laptops. I'm not sure if it's still relevant for the latest models, but it is still required for older models such as my Tecra M3. This change pulls in the low level Toshiba-specific code from the old patch and sets up an rfkill device and a polled input device to track the state of the hardware kill-switch. Signed-off-by: Philip Langdale <philipl@overt.org> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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*---------. \ \ Merge branches 'acpica-release-fixes', 'ec-fix', 'dock', 'irq-bounds', ↵Andi Kleen2008-08-157-12/+54
|\ \ \ \ \ \ \ \ | |_|_|_|_|_|_|/ |/| | | | | | | | | | | | | | | 'thermal-fix', 'wmi' and 'acpi-cleanups' into release-2.6.27
| | | | | | * | acpi: trivial cleanupsPavel Machek2008-08-152-2/+1
| | | | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Trivial cleanups for ACPI. Fix misspelling in printk(), fix mismerge, add file header. AK: removed file header Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andi Kleen <ak@linux.intel.com>
| | | | | * | ACPI: WMI: Set instance for query block callsCarlos Corbacho2008-08-151-1/+1
| | | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Although the necessary data structure was set up, it was never actually passed in, so data block calls have only been working by sheer chance. (On Acer laptops. the data block methods we've been calling never look at the instance value, hence acer-wmi never triggered this before). f3454ae8104efb2dbf0d08ec42c6f5d0fe9225bc brought this to light. Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk> Signed-off-by: Andi Kleen <ak@linux.intel.com>
| | | | * | ACPI: Fix thermal shutdownsMilan Broz2008-08-151-1/+1
| | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do not use unsigned int if there is test for negative number... See drivers/acpi/processor_perflib.c static unsigned int ignore_ppc = -1; ... if (event == CPUFREQ_START && ignore_ppc <= 0) { ignore_ppc = 0; ... Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
| | | * | ACPI: bounds check IRQ to prevent memory corruptionBjorn Helgaas2008-08-151-5/+7
| | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | acpi_penalize_isa_irq() should validate irq before using it to index the acpi_irq_penalty[] table. Here's the path I'm concerned about: pnpacpi_parse_allocated_irqresource() { ... irq = acpi_register_gsi(gsi, triggering, polarity); if (irq >= 0) pcibios_penalize_isa_irq(irq, 1); There's no guarantee that acpi_register_gsi() will return an IRQ within the bounds of acpi_irq_penalty[]. I have not seen a failure I can attribute to this. However, ACPI_MAX_IRQS is only 256, and I'm pretty sure ia64 can have IRQs larger than that. I think this should go in 2.6.27. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
| | * | ACPI: Properly clear flags on false-positives and send uevent on sudden unplugHolger Macht2008-08-151-3/+8
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some devices emit a ACPI_NOTIFY_DEVICE_CHECK while physically unplugging even if the software undock has already been done and dock_present() check fails. However, the internal flags need to be cleared (complete_undock()). Also, even notify userspace if the dock station suddently went away without proper software undocking. This happens on a Acer TravelMate 3000 Signed-off-by: Holger Macht <hmacht@suse.de> Signed-off-by: Andi Kleen <ak@linux.intel.com>
| * | ACPI: Avoid bogus EC timeout when EC is in Polling modeZhao Yakui2008-08-151-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When EC is in Polling mode, OS will check the EC status continually by using the following source code: clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags); while (time_before(jiffies, delay)) { if (acpi_ec_check_status(ec, event)) return 0; msleep(1); } But msleep is realized by the function of schedule_timeout. At the same time although one process is already waken up by some events, it won't be scheduled immediately. So maybe there exists the following phenomena: a. The current jiffies is already after the predefined jiffies. But before timeout happens, OS has no chance to check the EC status again. b. If preemptible schedule is enabled, maybe preempt schedule will happen before checking loop. When the process is resumed again, maybe timeout already happens, which means that OS has no chance to check the EC status. In such case maybe EC status is already what OS expects when timeout happens. But OS has no chance to check the EC status and regards it as AE_TIME. So it will be more appropriate that OS will try to check the EC status again when timeout happens. If the EC status is what we expect, it won't be regarded as timeout. Only when the EC status is not what we expect, it will be regarded as timeout, which means that EC controller can't give a response in time. http://bugzilla.kernel.org/show_bug.cgi?id=9823 http://bugzilla.kernel.org/show_bug.cgi?id=11141 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
| * | ACPI : Add the EC dmi table to fix the incorrect ECDT tableZhao Yakui2008-08-151-0/+34
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On some ASUS laptops the ECDT gives the incorrect command/status & Data I/O register address. AK: it seems like the command/data addresses are exchanged. In such case it will cause that EC device can't be initialized correctly. To add the EC dmi table is to fix this issue. If the laptop falls into the EC dmi table, the EC command/data I/O address will be fixed. AK: Add comments describing this better http://bugzilla.kernel.org/show_bug.cgi?id=9399 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> tested-by : Jan Kasprzak <kas@fi.muni.cz> Signed-off-by: Andi Kleen <ak@linux.intel.com>
* | ACPICA: Additional error checking for pathname utilitiesBob Moore2008-08-154-19/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | Add error check after all calls to acpi_ns_get_pathname_length. Add status return from acpi_ns_build_external_path and check after all calls. Add parameter validation to acpi_ut_initialize_buffer. Reported by and initial patch by Ingo Molnar. http://lkml.org/lkml/2008/7/21/176 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
* | ACPICA: Fix possible memory leak in Unload() operatorLin Ming2008-08-151-0/+3
| | | | | | | | | | | | | | | | | | The DdbHandle returned by Load() does not have its reference count decremented during unload, leading to a memory leak. Lin Ming. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
* | ACPICA: Fix memory leak when deleting thermal/processor objectsBob Moore2008-08-151-2/+11
|/ | | | | | | | | | | | | Fixes a possible memory leak when thermal and processor objects are deleted. Any associated notify handlers (and objects) were not being deleted. Fiodor Suietov. BZ 506 http://www.acpica.org/bugzilla/show_bug.cgi?id=506 Signed-off-by: Fiodor Suietov <fiodor.f.suietov@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
* Remove newline from the description of module parametersNiels de Vos2008-08-011-2/+2
| | | | | | | | | | | | | | | | | | | | Some module parameters with only one line have the '\n' at the end of the description. This is not needed nor wanted as after the description the type (i.e. int) is followed by a newline. Some modules contain a multi-line description, these are not affected by this patch. Signed-off-by: Niels de Vos <niels.devos@wincor-nixdorf.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: John W. Linville <linville@tuxdriver.com> Cc: Ed L. Cashin <ecashin@coraid.com> Cc: Dave Airlie <airlied@linux.ie> Cc: Roland Dreier <rolandd@cisco.com> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* acpi cpufreq cleanup: move bailing out of function before locking the mutexThomas Renninger2008-07-301-3/+3
| | | | | | | | | | | Signed-off-by: Thomas Renninger <trenn@suse.de> Cc: Andi Kleen <andi@firstfloor.org> Cc: Len Brown <lenb@kernel.org> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: Ingo Molnar <mingo@elte.hu> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cpufreq acpi: only call _PPC after cpufreq ACPI init funcs got called alreadyThomas Renninger2008-07-301-2/+13
| | | | | | | | | | | | | | | | | | | | | Ingo Molnar provided a fix to not call _PPC at processor driver initialization time in "[PATCH] ACPI: fix cpufreq regression" (git commit e4233dec749a3519069d9390561b5636a75c7579) But it can still happen that _PPC is called at processor driver initialization time. This patch should make sure that this is not possible anymore. Signed-off-by: Thomas Renninger <trenn@suse.de> Cc: Andi Kleen <andi@firstfloor.org> Cc: Len Brown <lenb@kernel.org> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: Ingo Molnar <mingo@elte.hu> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2008-07-281-11/+7
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (21 commits) x86/PCI: use dev_printk when possible PCI: add D3 power state avoidance quirk PCI: fix bogus "'device' may be used uninitialized" warning in pci_slot PCI: add an option to allow ASPM enabled forcibly PCI: disable ASPM on pre-1.1 PCIe devices PCI: disable ASPM per ACPI FADT setting PCI MSI: Don't disable MSIs if the mask bit isn't supported PCI: handle 64-bit resources better on 32-bit machines PCI: rewrite PCI BAR reading code PCI: document pci_target_state PCI hotplug: fix typo in pcie hotplug output x86 gart: replace to_pages macro with iommu_num_pages x86, AMD IOMMU: replace to_pages macro with iommu_num_pages iommu: add iommu_num_pages helper function dma-coherent: add documentation to new interfaces Cris: convert to using generic dma-coherent mem allocator Sh: use generic per-device coherent dma allocator ARM: support generic per-device coherent dma mem Generic dma-coherent: fix DMA_MEMORY_EXCLUSIVE x86: use generic per-device dma coherent allocator ...
| * PCI: fix bogus "'device' may be used uninitialized" warning in pci_slotMatthew Wilcox2008-07-281-11/+7
| | | | | | | | | | | | | | | | | | | | | | I get warnings about 'device' possibly being used uninitialised. While I can deduce this is not true, it seems that GCC can't. This patch changes `check_slot' to return device on success and -1 on error, which shuts GCC up. Acked-by: Alex Chiang <achiang@hp.com> Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* | Merge branch 'linus' into cpus4096Ingo Molnar2008-07-281-4/+11
|\ \ | |/ | | | | | | | | | | | | Conflicts: kernel/stop_machine.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * ACPI/CPUIDLE: prevent setting pm_idle to NULLThomas Gleixner2008-07-281-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pm_idle_save resp. pm_idle_old can be NULL when the restore code in acpi_processor_cst_has_changed() resp. cpuidle_uninstall_idle_handler() is called. This can set pm_idle unconditinally to NULL, which causes the kernel to panic when calling pm_idle in the x86 idle code. This was covered by an extra check for !pm_idle in the x86 idle code, which was removed during the x86 idle code refactoring. Instead of restoring the pm_idle check in the x86 code prevent the acpi/cpuidle code to set pm_idle to NULL. Reported by: Dhaval Giani http://lkml.org/lkml/2008/7/2/309 Based on a debug patch from Ingo Molnar Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'linus' into cpus4096Ingo Molnar2008-07-281-0/+6
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| * Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds2008-07-261-0/+6
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: ftrace: fix modular build ftrace: disable tracing on acpi idle calls ftrace: remove latency-tracer leftover ftrace: only trace preempt off with preempt tracer ftrace: fix 4d3702b6 (post-v2.6.26): WARNING: at kernel/lockdep.c:2731 check_flags (ftrace)
| | * ftrace: disable tracing on acpi idle callsSteven Rostedt2008-07-261-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The acpi idle waits calls local_irq_save and then uses mwait to go into idle. The tracer gets reenabled at local_irq_save but does not detect that the idle allows for wake ups. This patch adds code to disable the tracing when acpi puts the CPU to idle. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | cpumask: change cpumask_of_cpu_ptr to use new cpumask_of_cpuMike Travis2008-07-261-8/+3
|/ / | | | | | | | | | | | | | | | | | | | | * Replace previous instances of the cpumask_of_cpu_ptr* macros with a the new (lvalue capable) generic cpumask_of_cpu(). Signed-off-by: Mike Travis <travis@sgi.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jack Steiner <steiner@sgi.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'release-2.6.27' of ↵Linus Torvalds2008-07-246-24/+93
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-2.6 * 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-2.6: acpi: fix crash in core ACPI code, triggered by CONFIG_ACPI_PCI_SLOT=y ACPI: thinkpad-acpi: don't misdetect in get_thinkpad_model_data() on -ENOMEM ACPI: thinkpad-acpi: bump up version to 0.21 ACPI: thinkpad-acpi: add bluetooth and WWAN rfkill support ACPI: thinkpad-acpi: WLSW overrides other rfkill switches ACPI: thinkpad-acpi: prepare for bluetooth and wwan rfkill support ACPI: thinkpad-acpi: consolidate wlsw notification function ACPI: thinkpad-acpi: minor refactor on radio switch init Revert "ACPI: don't walk tables if ACPI was disabled" Revert "dock: bay: Don't call acpi_walk_namespace() when ACPI is disabled." Revert "Fix FADT parsing" ACPI : Set FAN device to correct state in boot phase ACPI: Ignore _BQC object when registering backlight device ACPI: stop complaints about interrupt link End Tags and blank IRQ descriptors
| * | acpi: fix crash in core ACPI code, triggered by CONFIG_ACPI_PCI_SLOT=yIngo Molnar2008-07-222-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -tip testing found the following boot crash on 32-bit x86 (Core2Duo laptop) yesterday: [ 5.606664] scsi4 : ata_piix [ 5.606664] scsi5 : ata_piix [ 5.606664] ACPI Error (psargs-0358): [\_SB_.PCI0.LPC_.EC__.BSTA] Namespace lookup failure, AE_NOT_FOUND [ 5.606664] ACPI Error (psparse-0530): ACPI Error (nsnames-0186): Invalid NS Node (f7c0e960) while traversing path [20080609] [ 5.606664] BUG: unable to handle kernel NULL pointer dereference at 0000000f [ 5.606664] IP: [<80339e2f>] acpi_ns_build_external_path+0x1f/0x80 [ 5.609997] *pdpt = 0000000000a03001 *pde = 0000000000000000 [ 5.609997] Oops: 0002 [#1] SMP [ 5.609997] [ 5.609997] Pid: 1, comm: swapper Not tainted (2.6.26-tip-03965-gbbfb62e-dirty #3153) [ 5.609997] EIP: 0060:[<80339e2f>] EFLAGS: 00010286 CPU: 0 [ 5.609997] EIP is at acpi_ns_build_external_path+0x1f/0x80 [ 5.609997] EAX: f7c18c18 EBX: ffffffff ECX: 00000010 EDX: 00000000 [ 5.609997] ESI: f7c18c18 EDI: 00000010 EBP: f7c4dc28 ESP: f7c4dc18 [ 5.609997] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 [ 5.609997] Process swapper (pid: 1, ti=f7c4c000 task=f7c50000 task.ti=f7c4c000) [ 5.609997] Stack: 00000000 00000000 f7c18c18 f7c4dc48 f7c4dc40 80339ed0 00000000 f7c18c18 [ 5.609997] 8084c1b6 8084c1b6 f7c4dc58 8033a60a 00000000 00000010 00000000 f7c18c18 [ 5.609997] f7c4dc70 8033a68f f7c18c18 00000000 f6de7600 00000005 f7c4dc98 8033c34d [ 5.609997] Call Trace: [ 5.609997] [<80339ed0>] ? acpi_ns_handle_to_pathname+0x40/0x72 [ 5.609997] [<8033a60a>] ? acpi_ns_print_node_pathname+0x2c/0x61 [ 5.609997] [<8033a68f>] ? acpi_ns_report_method_error+0x50/0x6d [ 5.609997] [<8033c34d>] ? acpi_ps_parse_aml+0x149/0x2f9 [ 5.609997] [<8033d6dd>] ? acpi_ps_execute_method+0x132/0x201 [ 5.609997] [<80339d19>] ? acpi_ns_evaluate+0x1ad/0x258 [ 5.609997] [<803406c4>] ? acpi_ut_evaluate_object+0x55/0x18f [ 5.609997] [<803408b7>] ? acpi_ut_execute_STA+0x22/0x7a [ 5.609997] [<8033a907>] ? acpi_get_object_info+0x131/0x1be [ 5.609997] [<80344bb2>] ? do_acpi_find_child+0x22/0x4b [ 5.609997] [<8033b855>] ? acpi_ns_walk_namespace+0xa5/0x124 [ 5.609997] [<803394f3>] ? acpi_walk_namespace+0x54/0x74 [ 5.609997] [<80344b90>] ? do_acpi_find_child+0x0/0x4b [ 5.609997] [<80344b85>] ? acpi_get_child+0x38/0x43 [ 5.609997] [<80344b90>] ? do_acpi_find_child+0x0/0x4b [ 5.609997] [<804d0148>] ? ata_acpi_associate+0xb5/0x1b5 [ 5.609997] [<804c6ecb>] ? ata_scsi_add_hosts+0x8e/0xdc [ 5.609997] [<804c40c8>] ? ata_host_register+0x9f/0x1d6 [ 5.609997] [<804cbc7f>] ? ata_pci_sff_activate_host+0x179/0x19f [ 5.609997] [<804cdd45>] ? ata_sff_interrupt+0x0/0x1c7 [ 5.609997] [<8069b033>] ? piix_init_one+0x569/0x5b0 [ 5.609997] [<801bd400>] ? sysfs_ilookup_test+0x0/0x11 [ 5.609997] [<801987d7>] ? ilookup5_nowait+0x29/0x30 [ 5.609997] [<802efc7e>] ? pci_match_device+0x99/0xa3 [ 5.609997] [<802efd3c>] ? pci_device_probe+0x39/0x59 [ 5.609997] [<803bc4af>] ? driver_probe_device+0xa0/0x11b [ 5.609997] [<803bc564>] ? __driver_attach+0x3a/0x59 [ 5.609997] [<803bbde3>] ? bus_for_each_dev+0x36/0x58 [ 5.609997] [<803bc354>] ? driver_attach+0x14/0x16 [ 5.609997] [<803bc52a>] ? __driver_attach+0x0/0x59 [ 5.609997] [<803bc161>] ? bus_add_driver+0x93/0x196 [ 5.609997] [<803bc773>] ? driver_register+0x71/0xcd [ 5.609997] [<802eff05>] ? __pci_register_driver+0x3f/0x6e [ 5.609997] [<809af7ff>] ? piix_init+0x14/0x24 [ 5.609997] [<80984568>] ? kernel_init+0x128/0x269 [ 5.609997] [<809af7eb>] ? piix_init+0x0/0x24 [ 5.609997] [<802e2758>] ? trace_hardirqs_on_thunk+0xc/0x10 [ 5.609997] [<80116aef>] ? restore_nocheck_notrace+0x0/0xe [ 5.609997] [<80984440>] ? kernel_init+0x0/0x269 [ 5.609997] [<80984440>] ? kernel_init+0x0/0x269 [ 5.609997] [<80117d87>] ? kernel_thread_helper+0x7/0x10 [ 5.609997] ======================= [ 5.609997] Code: 75 02 b3 01 8d 43 01 8b 5d fc c9 c3 55 89 e5 57 89 cf 56 53 89 d3 4b 83 ec 04 83 fb 03 89 55 f0 77 09 c6 01 5c c6 41 01 00 eb 59 <c6> 04 19 00 8b 55 f0 8d 34 11 89 c2 eb 19 8b 42 08 83 eb 05 89 [ 5.609997] EIP: [<80339e2f>] acpi_ns_build_external_path+0x1f/0x80 SS:ESP 0068:f7c4dc18 [ 5.613331] Kernel panic - not syncing: Fatal exception [ 5.613331] Rebooting in 1 seconds..[ 4.646664] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) I have bisected it down to: # bad: [5b664cbe] Merge branch 'upstream-linus' of git://git.kernel. # good: [bce7f795] Linux 2.6.26 # good: [e18425ab] Merge branch 'tracing/for-linus' of git://git.kern # good: [cadc7236] Merge branch 'bkl-removal' into next # good: [4515889a] Merge branch 'merge' of git://git.kernel.org/pub/s # good: [42fdd14e] Merge git://git.kernel.org/pub/scm/linux/kernel/gi # good: [8a0ca91f] Merge branch 'for-linus' of git://git.kernel.org/p # bad: [0af4b8cb] ACPI: Introduce new device wakeup flag 'prepared' # good: [fe997407] PCI: construct one fakephp slot per PCI slot # bad: [531f254a] PCIE: aer: use dev_printk when possible # bad: [15650a20] x86/PCI: fixup early quirk probing # good: [0e6859d9] ACPI PM: Remove obsolete Toshiba workaround # bad: [8344b566] PCI: ACPI PCI slot detection driver # good: [f46753c9] PCI: introduce pci_slot | 8344b568f5bdc7ee1bba909de3294c6348c36056 is first bad commit | commit 8344b568f5bdc7ee1bba909de3294c6348c36056 | Author: Alex Chiang <achiang@hp.com> | Date: Tue Jun 10 15:30:42 2008 -0600 | | PCI: ACPI PCI slot detection driver | | Detect all physical PCI slots as described by ACPI, and create entries in | /sys/bus/pci/slots/. I.e. the new CONFIG_ACPI_PCI_SLOT=y option was causing this crash. But the bug is not mainly in this new PCI code - that code was just hitting the ACPI code in a new way which made ACPI break. The crash signature shows that we are crashing on this instruction: movb $0x0, (%ecx, %ebx, 1) ECX and EBX are 0x10 and -1. It's this line in drivers/acpi/namespace/nsnames.c's acpi_ns_build_external_path(): name_buffer[index] = 0; I.e. name_buffer is 0x10 and index is -1. index -1 corresponds to size 0, and name_buffer 0x10 is slab's ZERO_SIZE_PTR special-case for zero-sized allocations. I.e. when we called acpi_ns_handle_to_pathname(), we got required_size of 0 due to an error condition, but this is passed to the ACPI allocator unconditionally: required_size = acpi_ns_get_pathname_length(node); /* Validate/Allocate/Clear caller buffer */ status = acpi_ut_initialize_buffer(buffer, required_size); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } Where acpi_ut_initialize_buffer(), through many (unnecessary) layers, ends up calling kzalloc(0). Which returns 0x10 and that then causes the crash later on. So fix both callers of acpi_ns_get_pathname_length(), which can return 0 in case of an invalid node. Also add a WARN_ON() against zero sized allocations in acpi_ut_initialize_buffer() to make it easier to find similar instances of this bug. I have tested this patch for the past 24 hours and the crash has not reappeared. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andi Kleen <ak@linux.intel.com>
| * | Revert "ACPI: don't walk tables if ACPI was disabled"Andi Kleen2008-07-181-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | This reverts commit d1857056904d5f313f11184fcfa624652ff9620a. Double commit, noticed by Thomas Gleixner. Signed-off-by: Andi Kleen <ak@linux.intel.com>
| * | Merge branch 'merge' into release-2.6.27Andi Kleen2008-07-183-13/+75
| |\ \
| | * | ACPI : Set FAN device to correct state in boot phaseZhao Yakui2008-07-181-0/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Subject:ACPI: Set FAN device to correct state in boot phase From: Zhao Yakui <yakui.zhao@intel.com> On some laptops when ACPI FAN driver is loaded, maybe the FAN device will be turned on. But if the temperature is below the threshold, the corresponding FAN device should be turned off in the course of loading thermal driver. So it is necessary to set the FAN device to the correct state in course of loading the thermal driver. http://bugzilla.kernel.org/show_bug.cgi?id=8049 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
| | * | ACPI: Ignore _BQC object when registering backlight deviceZhao Yakui2008-07-181-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | According to acpi spec , the objectes of _BCL and _BCM are required if integrated LCD is present and supports brightness level and the _BQC is the optional object. So the _BQC object will be ignored when the backlight device is registered. At the same time when there is no _BQC object, the current brightness will be set to the maximum. 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: Andi Kleen <ak@linux.intel.com>
| | * | ACPI: stop complaints about interrupt link End Tags and blank IRQ descriptorsBjorn Helgaas2008-07-181-11/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Silently ignore _PRS End Tags. We already ignore Start Dependent Functions in _PRS, and we already ignore End Tags in _CRS, so we might as well ignore End Tags in _PRS as well. Silently ignore _PRS IRQ descriptors that mention no interrupts. The spec allows this (section 6.4.2.1 in ACPI 3.0b spec), and it probably means the interrupt link can't be configured at all. This patch doesn't change any functional behavior; it just removes confusing complaints like these: ACPI: Blank IRQ resource ACPI: Resource is not an IRQ entry when parsing _PRS data "23 00 00 18 79 00" from an IBM xSeries 335 dual Pentium IV Xeon 2.40 GHz machine. For more details, see http://bugzilla.kernel.org/show_bug.cgi?id=11049 The "23 00 00 18" part is a three-byte-long small IRQ resource with no bits set in the IRQ mask ("00 00"), and level-triggered, active low, shareable ("18"). The "79 00" is an End Tag (type 0x7). It is superfluous since there is no Start Dependent Function tag and there are no resources after it, but it is harmless. Thanks to Gabriele Trombetti <g.trombetti.lkrnl1213@logicschema.com> (aka Kurk) for reporting this and testing the patch. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
| * | | Revert "dock: bay: Don't call acpi_walk_namespace() when ACPI is disabled."Andi Kleen2008-07-182-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Revert double commit by mistake. Noticed by Thomas Gleixner. This reverts commit cc7e51666d82aedfd6b9a033ca1a10d71c21f1ca. Signed-off-by: Andi Kleen <ak@linux.intel.com>
| * | | Revert "Fix FADT parsing"Andi Kleen2008-07-181-11/+6
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 01a5bba576b9364b33f61f0cd9fa70c2cf5535e2. There seem to be some FADTs around with bogus information in the v2 fields. Revert this patch for now until this can be properly resolved. Signed-off-by: Andi Kleen <ak@linux.intel.com>
generated by cgit v1.1 at 2024-12-26 08:46:23 +0000