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2009-12-15ACPICA: Remove messages if predefined repair(s) are successfulBob Moore
Repair mechanism was considered too wordy. Now, messages are only unconditionally emitted if the return object cannot be repaired. Existing messages for successful repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. http://www.acpica.org/bugzilla/show_bug.cgi?id=827 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>
2009-12-15ACPICA: Move Package-to-Buffer repair code into common ToBuffer functionBob Moore
Move code specific to _FDE and _GTM into the generic repair code. 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>
2009-12-15ACPICA: Fix mutex errors when running _REG methodsBob Moore
Fixes a problem where mutex errors can occur when running a _REG method that is in the same scope as a method-defined operation region or an operation region under a module-level IF block. This is rare, so the problem has not been seen before. ACPICA BZ 826. http://www.acpica.org/bugzilla/show_bug.cgi?id=826 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>
2009-12-15ACPICA: Update function headers, no functional changeBob Moore
Fixed a few errors with the headers in utcopy.c 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>
2009-12-15ACPICA: Add more conversions to predefined name repair moduleBob Moore
This change enhances the automatic repairs/conversions for predefined name return values to make Integers, Strings, and Buffers fully interchangeable. Also, a Buffer can be converted to a Package of Integers if necessary. The nsrepair.c module was completely restructured. 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>
2009-12-15ACPICA: Update internal namespace node/handle interfacesBob Moore
This change deletes the unnecessary acpi_ns_convert_entry_to_handle interface and renames the acpi_ns_map_handle_to_node interface to acpi_ns_validate_handle. ACPICA BZ 798. http://www.acpica.org/bugzilla/show_bug.cgi?id=798 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>
2009-12-15ACPICA: Add repair for bad _FDE/_GTM buffersBob Moore
The expected return value for both names is a Buffer of 5 DWORDS. This repair fixes two possible problems (both seen in the field): A package of integers is returned, or a buffer of BYTEs is returned. 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>
2009-12-15ACPICA: Fix two additional Scope override error messagesBob Moore
These messages were using the internal path for the message instead of using the node name. 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>
2009-12-15ACPICA: Fix two Scope type error messagesBob Moore
Both messages incorrectly used the internal Path string instead of the node name. 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>
2009-12-15ACPICA: Fix possible memory leak for module-level code executionLin Ming
An object can be leaked for each block of executed module-level code if the interpreter slack mode is enabled. The change deletes any implicitly returned object in this case. 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>
2009-12-11Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: [ACPI/CPUFREQ] Introduce bios_limit per cpu cpufreq sysfs interface [CPUFREQ] make internal cpufreq_add_dev_* static [CPUFREQ] use an enum for speedstep processor identification [CPUFREQ] Document units for transition latency [CPUFREQ] Use global sysfs cpufreq structure for conservative governor tunings [CPUFREQ] Documentation: ABI: /sys/devices/system/cpu/cpu#/cpufreq/ [CPUFREQ] powernow-k6: set transition latency value so ondemand governor can be used [CPUFREQ] cpumask: don't put a cpumask on the stack in x86...cpufreq/powernow-k8.c
2009-12-11Merge branch 'linux-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (109 commits) PCI: fix coding style issue in pci_save_state() PCI: add pci_request_acs PCI: fix BUG_ON triggered by logical PCIe root port removal PCI: remove ifdefed pci_cleanup_aer_correct_error_status PCI: unconditionally clear AER uncorr status register during cleanup x86/PCI: claim SR-IOV BARs in pcibios_allocate_resource PCI: portdrv: remove redundant definitions PCI: portdrv: remove unnecessary struct pcie_port_data PCI: portdrv: minor cleanup for pcie_port_device_register PCI: portdrv: add missing irq cleanup PCI: portdrv: enable device before irq initialization PCI: portdrv: cleanup service irqs initialization PCI: portdrv: check capabilities first PCI: portdrv: move PME capability check PCI: portdrv: remove redundant pcie type calculation PCI: portdrv: cleanup pcie_device registration PCI: portdrv: remove redundant pcie_port_device_probe PCI: Always set prefetchable base/limit upper32 registers PCI: read-modify-write the pcie device control register when initiating pcie flr PCI: show dma_mask bits in /sys ... Fixed up conflicts in: arch/x86/kernel/amd_iommu_init.c drivers/pci/dmar.c drivers/pci/hotplug/acpiphp_glue.c
2009-12-11ACPI: support customizing ACPI control methods at runtimeZhang Rui
Introduce a new debugfs I/F (/sys/kernel/debug/acpi/custom_method) for ACPI, which can be used to customize the ACPI control methods at runtime. We can use this to debug the AML code level bugs instead of overriding the whole DSDT table, without rebuilding/rebooting kernel any more. Detailed description about how to use this debugfs I/F is stated in Documentation/acpi/method-customizing.txt Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-12-09Merge branch 'acpica' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: ACPICA: Update version to 20091112. ACPICA: Add additional module-level code support ACPICA: Deploy new create integer interface where appropriate ACPICA: New internal utility function to create Integer objects ACPICA: Add repair for predefined methods that must return sorted lists ACPICA: Fix possible fault if return Package objects contain NULL elements ACPICA: Add post-order callback to acpi_walk_namespace ACPICA: Change package length error message to an info message ACPICA: Reduce severity of predefined repair messages, Warning to Info ACPICA: Update version to 20091013 ACPICA: Fix possible memory leak for Scope ASL operator ACPICA: Remove possibility of executing _REG methods twice ACPICA: Add repair for bad _MAT buffers ACPICA: Add repair for bad _BIF/_BIX packages
2009-12-09Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (42 commits) tree-wide: fix misspelling of "definition" in comments reiserfs: fix misspelling of "journaled" doc: Fix a typo in slub.txt. inotify: remove superfluous return code check hdlc: spelling fix in find_pvc() comment doc: fix regulator docs cut-and-pasteism mtd: Fix comment in Kconfig doc: Fix IRQ chip docs tree-wide: fix assorted typos all over the place drivers/ata/libata-sff.c: comment spelling fixes fix typos/grammos in Documentation/edac.txt sysctl: add missing comments fs/debugfs/inode.c: fix comment typos sgivwfb: Make use of ARRAY_SIZE. sky2: fix sky2_link_down copy/paste comment error tree-wide: fix typos "couter" -> "counter" tree-wide: fix typos "offest" -> "offset" fix kerneldoc for set_irq_msi() spidev: fix double "of of" in comment comment typo fix: sybsystem -> subsystem ...
2009-12-09ACPI: add const to acpi_check_resource_conflict()Jean Delvare
acpi_check_resource_conflict() doesn't change the resource it operates on, so the res parameter can be marked const. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Len Brown <len.brown@intel.com>
2009-12-08Merge branch 'x86-mm-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (36 commits) x86, mm: Correct the implementation of is_untracked_pat_range() x86/pat: Trivial: don't create debugfs for memtype if pat is disabled x86, mtrr: Fix sorting of mtrr after subtracting x86: Move find_smp_config() earlier and avoid bootmem usage x86, platform: Change is_untracked_pat_range() to bool; cleanup init x86: Change is_ISA_range() into an inline function x86, mm: is_untracked_pat_range() takes a normal semiclosed range x86, mm: Call is_untracked_pat_range() rather than is_ISA_range() x86: UV SGI: Don't track GRU space in PAT x86: SGI UV: Fix BAU initialization x86, numa: Use near(er) online node instead of roundrobin for NUMA x86, numa, bootmem: Only free bootmem on NUMA failure path x86: Change crash kernel to reserve via reserve_early() x86: Eliminate redundant/contradicting cache line size config options x86: When cleaning MTRRs, do not fold WP into UC x86: remove "extern" from function prototypes in <asm/proto.h> x86, mm: Report state of NX protections during boot x86, mm: Clean up and simplify NX enablement x86, pageattr: Make set_memory_(x|nx) aware of NX support x86, sleep: Always save the value of EFER ... Fix up conflicts (added both iommu_shutdown and is_untracked_pat_range) to 'struct x86_platform_ops') in arch/x86/include/asm/x86_init.h arch/x86/kernel/x86_init.c
2009-12-07Merge branch 'for-next' into for-linusJiri Kosina
Conflicts: kernel/irq/chip.c
2009-12-04tree-wide: fix some typos and punctuation in commentsThadeu Lima de Souza Cascardo
fix some typos and punctuation in comments Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-11-25Merge branch 'thinkpad-2.6.32' into releaseLen Brown
2009-11-25Merge branch 'bugzilla-14379' into releaseLen Brown
2009-11-24ACPI: Add Thinkpad T400, T500 to OSI(Linux) white-listJerone Young
acpi_osi=Linux helps the mute button work properly by sending Linux a mute key press. http://bugzilla.kernel.org/show_bug.cgi?id=13934 Signed-off-by: Jerone Young <jerone.young@canonical.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-24ACPICA: Silence the warning about _BIF returning the bufferAlexey Starikovskiy
_BIF was returning buffer instead of a string since day 1 of ACPI. Adding a warning for that is noble, but people don't like when someone cries wolf in a production system. Reference: http://bugzilla.kernel.org/show_bug.cgi?id=14379 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-24ACPICA: Add additional module-level code supportLin Ming
This change will execute module-level code that is not at the root of the namespace (under a Device object, etc.). ACPICA BZ 762. http://www.acpica.org/bugzilla/show_bug.cgi?id=762 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>
2009-11-24ACPICA: Deploy new create integer interface where appropriateBob Moore
Simplifies creation of simple integer objects. ACPICA BZ 823. http://www.acpica.org/bugzilla/show_bug.cgi?id=823 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>
2009-11-24ACPICA: New internal utility function to create Integer objectsBob Moore
acpi_ut_create_integer_object. This function (when deployed) should simplify some of the object creation code. ACPICA BZ 823. http://www.acpica.org/bugzilla/show_bug.cgi?id=823 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>
2009-11-24ACPICA: Add repair for predefined methods that must return sorted listsBob Moore
This change will repair (by sorting) packages returned by _ALR, _PSS, and _TSS. Drivers can now assume that the packages are correctly sorted. Adds one new file, nsrepair2.c. ACPICA BZ 784. http://www.acpica.org/bugzilla/show_bug.cgi?id=784 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>
2009-11-24ACPICA: Fix possible fault if return Package objects contain NULL elementsBob Moore
For predefined name validation. Also adds a warning if a NULL element is followed by any non-null elements. ACPICA BZ 813, 814. http://www.acpica.org/bugzilla/show_bug.cgi?id=813 http://www.acpica.org/bugzilla/show_bug.cgi?id=814 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>
2009-11-24ACPICA: Add post-order callback to acpi_walk_namespaceLin Ming
The existing interface only has a pre-order callback. This change adds an additional parameter for a post-order callback which will be more useful for bus scans. ACPICA BZ 779. Also update the external calls to acpi_walk_namespace. http://www.acpica.org/bugzilla/show_bug.cgi?id=779 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>
2009-11-24ACPICA: Change package length error message to an info messageBob Moore
This message happens when the package element list is longer than the declared length of the package. Changed to an info message because this condition is not actually an error. It is caused by the BIOS attempting to truncate the package on the fly by adjusting the package element count at the start of the package definition. 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>
2009-11-24ACPICA: Reduce severity of predefined repair messages, Warning to InfoBob Moore
Since the object was successfully repaired, a Warning is too severe. Reduced to Info for now. We may eventually change these messages to debug-only. ACPICA BZ 812. http://www.acpica.org/bugzilla/show_bug.cgi?id=812 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>
2009-11-24ACPICA: Fix possible memory leak for Scope ASL operatorLin Ming
Using Scope(\) to change the scope to the root could cause a single object memory leak. 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>
2009-11-24ACPICA: Remove possibility of executing _REG methods twiceLin Ming
If a custom address space handler is installed by the host before the "initialize operation regions" phase of the ACPICA initialization, any _REG methods for that address space could be executed twice. This change fixes the problem. ACPICA BZ 427. http://www.acpica.org/bugzilla/show_bug.cgi?id=427 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>
2009-11-24ACPICA: Add repair for bad _MAT buffersLin Ming
_MAT can inadvertently return an Integer instead of a Buffer if the return value has been read from a Field whose width is less than or equal to the global integer width (32 or 64 bits). ACPICA BZ 810. http://www.acpica.org/bugzilla/show_bug.cgi?id=810 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>
2009-11-24ACPICA: Add repair for bad _BIF/_BIX packagesBob Moore
Add a repair for the "Oem Information" field which is often mistakenly returned as an integer. It should always be a string. ACPICA BZ 807. http://www.acpica.org/bugzilla/show_bug.cgi?id=807 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>
2009-11-24[ACPI/CPUFREQ] Introduce bios_limit per cpu cpufreq sysfs interfaceThomas Renninger
This interface is mainly intended (and implemented) for ACPI _PPC BIOS frequency limitations, but other cpufreq drivers can also use it for similar use-cases. Why is this needed: Currently it's not obvious why cpufreq got limited. People see cpufreq/scaling_max_freq reduced, but this could have happened by: - any userspace prog writing to scaling_max_freq - thermal limitations - hardware (_PPC in ACPI case) limitiations Therefore export bios_limit (in kHz) to: - Point the user that it's the BIOS (broken or intended) which limits frequency - Export it as a sysfs interface for userspace progs. While this was a rarely used feature on laptops, there will appear more and more server implemenations providing "Green IT" features like allowing the service processor to limit the frequency. People want to know about HW/BIOS frequency limitations. All ACPI P-state driven cpufreq drivers are covered with this patch: - powernow-k8 - powernow-k7 - acpi-cpufreq Tested with a patched DSDT which limits the first two cores (_PPC returns 1) via _PPC, exposed by bios_limit: # echo 2200000 >cpu2/cpufreq/scaling_max_freq # cat cpu*/cpufreq/scaling_max_freq 2600000 2600000 2200000 2200000 # #scaling_max_freq shows general user/thermal/BIOS limitations # cat cpu*/cpufreq/bios_limit 2600000 2600000 2800000 2800000 # #bios_limit only shows the HW/BIOS limitation CC: Pallipadi Venkatesh <venkatesh.pallipadi@intel.com> CC: Len Brown <lenb@kernel.org> CC: davej@codemonkey.org.uk CC: linux@dominikbrodowski.net Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Dave Jones <davej@redhat.com>
2009-11-23ACPI: DMI init_set_sci_en_on_resume for HP-Compaq C700Len Brown
...else ACPI thermal controls fail after resume. http://bugzilla.kernel.org/show_bug.cgi?id=13745 Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-06ACPI: Notify the _PPC evaluation status to the platformZhao Yakui
According to the ACPI spec(section 8.4.4.3) OSPM should convey the _PPC evaluations status to the platform if there exists the _OST object. The _OST contains two arguments: The first is the PERFORMANCE notificatin event. The second is the status of _PPC object. OSPM will convey the _PPC evaluation status to the platform. Of course when the module parameter of "ignore_ppc" is added, OSPM won't evaluate the _PPC object. But it will call the _OST object. At the same time the _OST object will be evaluated only when the PERFORMANCE notification event is received. Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-06Merge branch 'bugzilla-13449' into releaseLen Brown
2009-11-05ACPI: sleep: another HP/Compaq DMI entries for init_set_sci_en_on_resumeVaibhav Verma
http://bugzilla.kernel.org/show_bug.cgi?id=13745 Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-05ACPI: add DMI entry for SCI_EN resume quirk on HP dv4Gustavo Maciel Dias Vieira
Fixes the missing battery on sleep problem for yet another HP laptop ("HP Pavilion dv4"). Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=13449 Signed-off-by: Gustavo Maciel Dias Vieira <gustavo@sagui.org> Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-05Merge branches 'misc', 'eeepc-laptop' and 'bugzilla-14445' into releaseLen Brown
2009-11-05acpi: thermal: display forced passive trip points in procFrans Pop
Users can force a passive trip point for a thermal zone that does not have _PSV defined in ACPI by setting the passive attribute in sysfs. It's useful to display such trip points in /proc/acpi/thermal_zone. .../TZ1/cooling_mode:<setting not supported> .../TZ1/polling_frequency:polling frequency: 10 seconds .../TZ1/state:state: ok .../TZ1/temperature:temperature: 53 C .../TZ1/trip_points:critical (S5): 110 C .../TZ1/trip_points:passive (forced): 95 C And if not set (passive is 0): .../TZ1/trip_points:passive (forced):<not set> Signed-off-by: Frans Pop <elendil@planet.nl> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-05ACPI: Move dereference after NULL testJulia Lawall
If the NULL test on pr is needed, then the dereference should be after the NULL test. A simplified version of the semantic match that detects this problem is as follows (http://coccinelle.lip6.fr/): // <smpl> @match exists@ expression x, E; identifier fld; @@ * x->fld ... when != \(x = E\|&x\) * x == NULL // </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>
2009-11-05ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine."Bob Moore
Ensure that memory mappings created for operation regions do not cross page boundaries. Crossing a page boundary while mapping regions can cause warnings if the pages have different attributes. Such regions are probably BIOS bugs, and this is the workaround. http://bugzilla.kernel.org/show_bug.cgi?id=14445 [Kernel summit hacking hour] Signed-off-by: Bob Moore <robert.moore@intel.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-05ACPI: add __cpuinit to acpi_processor_add()Rakib Mullick
Annote acpi_processor_add with cpuinit since it calls a cpuinit function acpi_processor_power_init and fixes a section mismatch warning. We were warned by the following warning: LD drivers/acpi/processor.o WARNING: drivers/acpi/processor.o(.text+0x1829): Section mismatch in reference from the function acpi_processor_add() to the function .cpuinit.text:acpi_processor_power_init() The function acpi_processor_add() references the function __cpuinit acpi_processor_power_init(). This is often because acpi_processor_add lacks a __cpuinit annotation or the annotation of acpi_processor_power_init is wrong. Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-05acpi-power-meter: Don't leak ACPI error codes to userspaceDarrick J. Wong
If the ACPI methods return an error code, we must return -EINVAL to userspace to flag the error. Right now we pass the (positive) number right through, which causes echo to keep writing bogus values. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-04PCI: PCIe AER: honor ACPI HEST FIRMWARE FIRST modeMatt Domsch
Feedback from Hidetoshi Seto and Kenji Kaneshige incorporated. This correctly handles PCI-X bridges, PCIe root ports and endpoints, and prints debug messages when invalid/reserved types are found in the HEST. PCI devices not in domain/segment 0 are not represented in HEST, thus will be ignored. Today, the PCIe Advanced Error Reporting (AER) driver attaches itself to every PCIe root port for which BIOS reports it should, via ACPI _OSC. However, _OSC alone is insufficient for newer BIOSes. Part of ACPI 4.0 is the new APEI (ACPI Platform Error Interfaces) which is a way for OS and BIOS to handshake over which errors for which components each will handle. One table in ACPI 4.0 is the Hardware Error Source Table (HEST), where BIOS can define that errors for certain PCIe devices (or all devices), should be handled by BIOS ("Firmware First mode"), rather than be handled by the OS. Dell PowerEdge 11G server BIOS defines Firmware First mode in HEST, so that it may manage such errors, log them to the System Event Log, and possibly take other actions. The aer driver should honor this, and not attach itself to devices noted as such. Furthermore, Kenji Kaneshige reminded us to disallow changing the AER registers when respecting Firmware First mode. Platform firmware is expected to manage these, and if changes to them are allowed, it could break that firmware's behavior. The HEST parsing code may be replaced in the future by a more feature-rich implementation. This patch provides the minimum needed to prevent breakage until that implementation is available. Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Reviewed-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Matt Domsch <Matt_Domsch@dell.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-11-03ACPI: dock: convert sysfs attributes to an attribute_groupAlex Chiang
As suggested by Dmitry Torokhov, convert the individual sysfs attributes into an attribute group. This change eliminates quite a bit of copy/paste code in the error handling paths. Signed-off-by: Alex Chiang <achiang@hp.com> Reviewed-by: Dmitry Torokhov <dtor@mail.ru> Acked-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-10-28ACPI: clean up video.c boundary checks and typesArjan van de Ven
proc.c and video.c are a bit sloppy around types and style, confusing gcc for a new feature that'll be in 2.6.33 and will cause a warning on the current code. This patch changes if (foo + 1 > sizeof bar) into if (foo >= sizeof(bar)) which is more kernel-style. it also changes a variable in proc.c to unsigned; it gets assigned a value from an unsigned type, and is then only compared for > not for negative, so using unsigned is just outright the right type Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-19 15:57:44 +0000