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2011-05-25Merge branch 'hwmon-for-linus' of ↵Linus Torvalds3-1035/+0
git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: hwmon: New driver for the SMSC EMC6W201 hwmon: (abituguru) Depend on DMI hwmon: (it87) Use request_muxed_region hwmon: (sch5627) Trigger Vbat measurements hwmon: (sch5627) Add sch5627_send_cmd function i8k: Integrate with the hwmon subsystem hwmon: (max6650) Properly support the MAX6650 hwmon: (max6650) Drop device detection Move ACPI power meter driver to hwmon hwmon: (f71882fg) Add support for F71808A hwmon: (f71882fg) Split has_beep in fan_has_beep and temp_has_beep hwmon: (asc7621) Drop duplicate dependency hwmon: (jc42) Change detection class hwmon: Add driver for AMD family 15h processor power information hwmon: (k10temp) Add support for Fam15h (Bulldozer) hwmon: Use helper functions to set and get driver data i8k: Avoid lahf in 64-bit code
2011-05-25Move ACPI power meter driver to hwmonJean Delvare3-1035/+0
As discussed earlier, the ACPI power meter driver would better live in drivers/hwmon, as its only purpose is to create hwmon-style interfaces for ACPI 4.0 power meter devices. Users are more likely to look for it there, and less likely to accidentally hide it by unselecting its dependencies. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: "Darrick J. Wong" <djwong@us.ibm.com> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Cc: Len Brown <lenb@kernel.org>
2011-05-25x86: remove 32-bit versions of readq()/writeq()Roland Dreier2-0/+12
The presense of a writeq() implementation on 32-bit x86 that splits the 64-bit write into two 32-bit writes turns out to break the mpt2sas driver (and in general is risky for drivers as was discussed in <http://lkml.kernel.org/r/adaab6c1h7c.fsf@cisco.com>). To fix this, revert 2c5643b1c5c7 ("x86: provide readq()/writeq() on 32-bit too") and follow-on cleanups. This unfortunately leads to pushing non-atomic definitions of readq() and write() to various x86-only drivers that in the meantime started using the definitions in the x86 version of <asm/io.h>. However as discussed exhaustively, this is actually the right thing to do, because the right way to split a 64-bit transaction is hardware dependent and therefore belongs in the hardware driver (eg mpt2sas needs a spinlock to make sure no other accesses occur in between the two halves of the access). Build tested on 32- and 64-bit x86 allmodconfig. Link: http://lkml.kernel.org/r/x86-32-writeq-is-broken@mdm.bga.com Acked-by: Hitoshi Mitake <h.mitake@gmail.com> Cc: Kashyap Desai <Kashyap.Desai@lsi.com> Cc: Len Brown <lenb@kernel.org> Cc: Ravi Anand <ravi.anand@qlogic.com> Cc: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Cc: Matthew Garrett <mjg@redhat.com> Cc: Jason Uhlenkott <juhlenko@akamai.com> Acked-by: James Bottomley <James.Bottomley@parallels.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-23Merge branch 'linux-next' of ↵Linus Torvalds1-4/+10
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: (27 commits) PCI: Don't use dmi_name_in_vendors in quirk PCI: remove unused AER functions PCI/sysfs: move bus cpuaffinity to class dev_attrs PCI: add rescan to /sys/.../pci_bus/.../ PCI: update bridge resources to get more big ranges when allocating space (again) KVM: Use pci_store/load_saved_state() around VM device usage PCI: Add interfaces to store and load the device saved state PCI: Track the size of each saved capability data area PCI/e1000e: Add and use pci_disable_link_state_locked() x86/PCI: derive pcibios_last_bus from ACPI MCFG PCI: add latency tolerance reporting enable/disable support PCI: add OBFF enable/disable support PCI: add ID-based ordering enable/disable support PCI hotplug: acpiphp: assume device is in state D0 after powering on a slot. PCI: Set PCIE maxpayload for card during hotplug insertion PCI/ACPI: Report _OSC control mask returned on failure to get control x86/PCI: irq and pci_ids patch for Intel Panther Point DeviceIDs PCI: handle positive error codes PCI: check pci_vpd_pci22_wait() return PCI: Use ICH6_GPIO_EN in ich6_lpc_acpi_gpio ... Fix up trivial conflicts in include/linux/pci_ids.h: commit a6e5e2be4461 moved the intel SMBUS ID definitons to the i2c-i801.c driver.
2011-05-23Merge branch 'for-linus' of ↵Linus Torvalds2-2/+2
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: (39 commits) b43: fix comment typo reqest -> request Haavard Skinnemoen has left Atmel cris: typo in mach-fs Makefile Kconfig: fix copy/paste-ism for dell-wmi-aio driver doc: timers-howto: fix a typo ("unsgined") perf: Only include annotate.h once in tools/perf/util/ui/browsers/annotate.c md, raid5: Fix spelling error in comment ('Ofcourse' --> 'Of course'). treewide: fix a few typos in comments regulator: change debug statement be consistent with the style of the rest Revert "arm: mach-u300/gpio: Fix mem_region resource size miscalculations" audit: acquire creds selectively to reduce atomic op overhead rtlwifi: don't touch with treewide double semicolon removal treewide: cleanup continuations and remove logging message whitespace ath9k_hw: don't touch with treewide double semicolon removal include/linux/leds-regulator.h: fix syntax in example code tty: fix typo in descripton of tty_termios_encode_baud_rate xtensa: remove obsolete BKL kernel option from defconfig m68k: fix comment typo 'occcured' arch:Kconfig.locks Remove unused config option. treewide: remove extra semicolons ...
2011-05-20Merge branch 'release' of ↵Linus Torvalds2-16/+46
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] define "_sdata" symbol pstore: Fix Kconfig dependencies for apei->pstore pstore: fix potential logic issue in pstore read interface pstore: fix pstore filesystem mount/remount issue pstore: fix one type of return value in pstore [IA64] fix build warning in arch/ia64/oprofile/backtrace.c
2011-05-20pstore: Fix Kconfig dependencies for apei->pstoreLuck, Tony1-0/+1
Geert Uytterhoeven ran a dependency checker which kicked out this warning: + warning: (ACPI_APEI) selects PSTORE which has unmet direct dependencies (MISC_FILESYSTEMS): => N/A Randy confirmed that the fix was to "select MISC_FILESYSTEMS" too. Tested-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2011-05-19Merge branch 'x86-mm-for-linus' of ↵Linus Torvalds1-22/+10
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: (50 commits) x86, mm: Allow ZONE_DMA to be configurable x86, NUMA: Trim numa meminfo with max_pfn in a separate loop x86, NUMA: Rename setup_node_bootmem() to setup_node_data() x86, NUMA: Enable emulation on 32bit too x86, NUMA: Enable CONFIG_AMD_NUMA on 32bit too x86, NUMA: Rename amdtopology_64.c to amdtopology.c x86, NUMA: Make numa_init_array() static x86, NUMA: Make 32bit use common NUMA init path x86, NUMA: Initialize and use remap allocator from setup_node_bootmem() x86-32, NUMA: Add @start and @end to init_alloc_remap() x86, NUMA: Remove long 64bit assumption from numa.c x86, NUMA: Enable build of generic NUMA init code on 32bit x86, NUMA: Move NUMA init logic from numa_64.c to numa.c x86-32, NUMA: Update numaq to use new NUMA init protocol x86-32, NUMA: Replace srat_32.c with srat.c x86-32, NUMA: implement temporary NUMA init shims x86, NUMA: Move numa_nodes_parsed to numa.[hc] x86-32, NUMA: Move get_memcfg_numa() into numa_32.c x86, NUMA: make srat.c 32bit safe x86, NUMA: rename srat_64.c to srat.c ...
2011-05-19Merge branch 'next' of ↵Linus Torvalds1-5/+1
git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] remove redundant sprintf from request_module call. [CPUFREQ] cpufreq_stats.c: Fixed brace coding style issue [CPUFREQ] Fix memory leak in cpufreq_stat [CPUFREQ] cpufreq.h: Fix some checkpatch.pl coding style issues. [CPUFREQ] use dynamic debug instead of custom infrastructure [CPUFREQ] CPU hotplug, re-create sysfs directory and symlinks [CPUFREQ] Fix _OSC UUID in pcc-cpufreq
2011-05-16pstore: fix potential logic issue in pstore read interfaceChen Gong1-1/+8
1) in the calling of erst_read, the parameter of buffer size maybe overflows and cause crash 2) the return value of erst_read should be checked more strictly Signed-off-by: Chen Gong <gong.chen@linux.intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2011-05-16pstore: fix pstore filesystem mount/remount issueChen Gong1-13/+35
Currently after mount/remount operation on pstore filesystem, the content on pstore will be lost. It is because current ERST implementation doesn't support multi-user usage, which moves internal pointer to the end after accessing it. Adding multi-user support for pstore usage. Signed-off-by: Chen Gong <gong.chen@linux.intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2011-05-16pstore: fix one type of return value in pstoreChen Gong1-2/+2
the return type of function _read_ in pstore is size_t, but in the callback function of _read_, the logic doesn't consider it too much, which means if negative value (assuming error here) is returned, it will be converted to positive because of type casting. ssize_t is enough for this function. Signed-off-by: Chen Gong <gong.chen@linux.intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2011-05-10PCI/ACPI: Report _OSC control mask returned on failure to get controlRafael J. Wysocki1-4/+10
If an attempt to get _OSC control of the PCIe native features from the BIOS fails, report the resulting mask of control flags the BIOS was willing to grant in the error message. Moreover, if the _OSC support mask is insufficient for requesting control of the PCIe native features or pcie_ports_disabled is set, print a diagnostic message containing the _OSC support mask. This helps to diagnose obscure _OSC-related problems on a number machines. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2011-05-10treewide: fix a few typos in commentsJustin P. Mattock2-2/+2
- kenrel -> kernel - whetehr -> whether - ttt -> tt - sss -> ss Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-05-04[CPUFREQ] use dynamic debug instead of custom infrastructureDominik Brodowski1-5/+1
With dynamic debug having gained the capability to report debug messages also during the boot process, it offers a far superior interface for debug messages than the custom cpufreq infrastructure. As a first step, remove the old cpufreq_debug_printk() function and replace it with a call to the generic pr_debug() function. How can dynamic debug be used on cpufreq? You need a kernel which has CONFIG_DYNAMIC_DEBUG enabled. To enabled debugging during runtime, mount debugfs and $ echo -n 'module cpufreq +p' > /sys/kernel/debug/dynamic_debug/control for debugging the complete "cpufreq" module. To achieve the same goal during boot, append ddebug_query="module cpufreq +p" as a boot parameter to the kernel of your choice. For more detailled instructions, please see Documentation/dynamic-debug-howto.txt Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Dave Jones <davej@redhat.com>
2011-05-02Merge branch 'x86/urgent' into x86-mmTejun Heo4-4/+8
Merge reason: Pick up the following two fix commits. 2be19102b7: x86, NUMA: Fix empty memblk detection in numa_cleanup_meminfo() 765af22da8: x86-32, NUMA: Fix ACPI NUMA init broken by recent x86-64 change Scheduled NUMA init 32/64bit unification changes depend on these. Signed-off-by: Tejun Heo <tj@kernel.org>
2011-04-26ACPI / PM: Avoid infinite recurrence while registering power resourcesRafael J. Wysocki1-0/+4
There is at least one BIOS with a DSDT containing a power resource object with a _PR0 entry pointing back to that power resource. In consequence, while registering that power resource acpi_bus_get_power_flags() sees that it depends on itself and tries to register it again, which leads to an infinitely deep recurrence. This problem was introduced by commit bf325f9538d8c89312be305b9779e (ACPI / PM: Register power resource devices as soon as they are needed). To fix this problem use the observation that power resources cannot be power manageable and prevent acpi_bus_get_power_flags() from being called for power resource objects. References: https://bugzilla.kernel.org/show_bug.cgi?id=31872 Reported-and-tested-by: Pascal Dormeau <pdormeau@free.fr> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Len Brown <lenb@kernel.org> Cc: stable@kernel.org
2011-03-31Fix common misspellingsLucas De Marchi3-4/+4
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-29acpi throttling: Use this_cpu_has and simplify code current cpuChristoph Lameter1-22/+10
With the this_cpu_xx we no longer need to pass an acpi structure to the msr management code. Simplifies code and improves performance. NOTE: This code is x86 specific (see #ifdef CONFIG_X86) but not under arch/x86. Signed-off-by: Christoph Lameter <cl@linux.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2011-03-28acpi: Remove sysfs_create_link from video driverMatthew Garrett1-6/+0
The acpi video driver attempts to explicitly create a sysfs link between the acpi device and the associated PCI device. However, we're now also doing this from the backlight core, which means that we get a backtrace caused by a duplicate file. Remove the code and leave it up to the backlight core. Reported-by: Jeff Chua <jeff.chua.linux@gmail.com> Signed-off-by: Matthew Garrett <mjg@redhat.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Tested-by: Alessandro Suardi <alessandro.suardi@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-25Merge branch 'for-linus' of ↵Linus Torvalds1-3/+8
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: PCI: Disable ASPM when _OSC control is not granted for PCIe services PCI: Changing ASPM policy, via /sys, to POWERSAVE could cause NMIs PCI: PCIe links may not get configured for ASPM under POWERSAVE mode PCI/ACPI: Report ASPM support to BIOS if not disabled from command line
2011-03-23Merge branch 'sysdev' into releaseLen Brown3-29/+8
2011-03-23Merge branch 'linus' into releaseLen Brown8-27/+170
Conflicts: arch/x86/kernel/acpi/sleep.c Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-23Merge branch 'battery-sysfs-notifier' into releaseLen Brown1-0/+22
2011-03-23Merge branch 'reset' into releaseLen Brown2-10/+14
2011-03-23Merge branch 'misc' into releaseLen Brown3-16/+18
2011-03-23ACPI: minor printk format change in acpi_padNaga Chumbalkar1-1/+1
Minor format change. Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-23ACPI: make acpi_pad /sys output more readableNaga Chumbalkar1-4/+7
Make /sys output from acpi_pad more readable. Before the fix: # cat idlecpus idlepct rrtime 00000000510 After the fix: # cat idlecpus idlepct rrtime 00000000 5 10 Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-22ACPI: Make sure the FADT is at least rev 2 before using the reset registerMatthew Garrett1-0/+5
The reset register was only introduced with version 2 of the FADT, so we should check that the FADT revision before trusting its contents. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-22ACPI: Bug compatibility for Windows on the ACPI reboot vectorMatthew Garrett1-5/+4
Windows ignores the bit_offset and bit_width, despite the spec requiring that they be validated. Drop the checks so that we match this behaviour. Windows also goes straight for the keyboard controller if the ACPI reboot fails, so we shouldn't sleep if we're still alive. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-22ACPICA: Fix access width for reset vectorMatthew Garrett1-5/+5
Section 4.7.3.6 of the ACPI specification requires that the register width of the reset vector be 8 bits. Windows simply hardcodes the access to be a byte and ignores the width provided in the FADT, so make sure that we do the same. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-22ACPI battery: fribble sysfs files from a resume notifierKyle McMartin1-0/+22
Commit da8aeb92 re-poked the battery on resume, but Linus reports that it broke his eee and partially reverted it in b23fffd7. Unfortunately this also results in my x201s giving crack values until the sysfs files are poked again. In the revert message, it was suggested that we poke it from a PM notifier, so let's do that. With this in place, I haven't noticed the units going nutty on my gnome-power-manager across a dozen suspends or so... Signed-off-by: Kyle McMartin <kyle@redhat.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-22Merge branch 'button-cleanup' into releaseLen Brown1-103/+60
2011-03-22ACPI button: remove unused procfs I/FZhang Rui1-103/+60
Remove unused ACPI button procfs interface. Only /proc/acpi/button/lid/LID/state remains. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-22acpi: tie ACPI backlight devices to PCI devices if possibleMatthew Garrett1-1/+14
Dual-GPU machines may provide more than one ACPI backlight interface. Tie the backlight device to the GPU in order to allow userspace to identify the correct interface. Signed-off-by: Matthew Garrett <mjg@redhat.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: David Airlie <airlied@linux.ie> Cc: Alex Deucher <alexdeucher@gmail.com> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Len Brown <lenb@kernel.org> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Tested-by: Sedat Dilek <sedat.dilek@googlemail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22backlight: add backlight typeMatthew Garrett1-0/+1
There may be multiple ways of controlling the backlight on a given machine. Allow drivers to expose the type of interface they are providing, making it possible for userspace to make appropriate policy decisions. Signed-off-by: Matthew Garrett <mjg@redhat.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: David Airlie <airlied@linux.ie> Cc: Alex Deucher <alexdeucher@gmail.com> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Len Brown <lenb@kernel.org> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22Merge branch 'apei-release' into releaseLen Brown4-51/+233
2011-03-21ACPI, APEI, Add PCIe AER error information printing supportHuang Ying2-4/+21
The AER error information printing support is implemented in drivers/pci/pcie/aer/aer_print.c. So some string constants, functions and macros definitions can be re-used without being exported. The original PCIe AER error information printing function is not re-used directly because the overall format is quite different. And changing the original printing format may make some original users' scripts broken. Signed-off-by: Huang Ying <ying.huang@intel.com> CC: Jesse Barnes <jbarnes@virtuousgeek.org> CC: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-21ACPI, APEI, Add ERST record ID cacheHuang Ying2-47/+212
APEI ERST firmware interface and implementation has no multiple users in mind. For example, if there is four records in storage with ID: 1, 2, 3 and 4, if two ERST readers enumerate the records via GET_NEXT_RECORD_ID as follow, reader 1 reader 2 1 2 3 4 -1 -1 where -1 signals there is no more record ID. Reader 1 has no chance to check record 2 and 4, while reader 2 has no chance to check record 1 and 3. And any other GET_NEXT_RECORD_ID will return -1, that is, other readers will has no chance to check any record even they are not cleared by anyone. This makes raw GET_NEXT_RECORD_ID not suitable for used by multiple users. To solve the issue, an in-memory ERST record ID cache is designed and implemented. When enumerating record ID, the ID returned by GET_NEXT_RECORD_ID is added into cache in addition to be returned to caller. So other readers can check the cache to get all record ID available. Signed-off-by: Huang Ying <ying.huang@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-21PCI: Disable ASPM when _OSC control is not granted for PCIe servicesNaga Chumbalkar1-2/+7
v3 -> v2: Added text to describe the problem v2 -> v1: Split this patch from v1 v1 : Part of: http://marc.info/?l=linux-pci&m=130042212003242&w=2 Disable ASPM when no _OSC control for PCIe services is granted by the BIOS. This is to protect systems with a buggy BIOS that did not set the ACPI FADT "ASPM Controls" bit even though the underlying HW can't do ASPM. To turn "on" ASPM the minimum the BIOS needs to do: 1. Clear the ACPI FADT "ASPM Controls" bit. 2. Support _OSC appropriately There is no _OSC Control bit for ASPM. However, we expect the BIOS to support _OSC for a Root Bridge that originates a PCIe hierarchy. If this is not the case - we are better off not enabling ASPM on that server. Commit 852972acff8f10f3a15679be2059bb94916cba5d (ACPI: Disable ASPM if the Platform won't provide _OSC control for PCIe) describes the above scenario. To quote verbatim from there: [The PCI SIG documentation for the _OSC OS/firmware handshaking interface states: "If the _OSC control method is absent from the scope of a host bridge device, then the operating system must not enable or attempt to use any features defined in this section for the hierarchy originated by the host bridge." The obvious interpretation of this is that the OS should not attempt to use PCIe hotplug, PME or AER - however, the specification also notes that an _OSC method is *required* for PCIe hierarchies, and experimental validation with An Alternative OS indicates that it doesn't use any PCIe functionality if the _OSC method is missing. That arguably means we shouldn't be using MSI or extended config space, but right now our problems seem to be limited to vendors being surprised when ASPM gets enabled on machines when other OSs refuse to do so. So, for now, let's just disable ASPM if the _OSC method doesn't exist or refuses to hand over PCIe capability control.] Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2011-03-21PCI/ACPI: Report ASPM support to BIOS if not disabled from command lineRafael J. Wysocki1-1/+1
We need to distinguish the situation in which ASPM support is disabled from the command line or through .config from the situation in which it is disabled, because the hardware or BIOS can't handle it. In the former case we should not report ASPM support to the BIOS through ACPI _OSC, but in the latter case we should do that. Introduce pcie_aspm_support_enabled() that can be used by acpi_pci_root_add() to determine whether or not it should report ASPM support to the BIOS through _OSC. Cc: stable@kernel.org References: https://bugzilla.kernel.org/show_bug.cgi?id=29722 References: https://bugzilla.kernel.org/show_bug.cgi?id=20232 Reported-and-tested-by: Ortwin Glück <odi@odi.ch> Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Tested-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2011-03-18ACPI: Use syscore_ops instead of sysdev class and sysdevRafael J. Wysocki1-22/+8
ACPI uses a sysdev class and a sysdev for executing irqrouter_resume() before turning on interrupts on the boot CPU. However, since irqrouter_resume() ignores its argument, the entire mechanism may be replaced with a struct syscore_ops object which is considerably simpler. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-18ACPI: Remove the unused EC sysdev classRafael J. Wysocki2-7/+0
The ACPI EC driver defines a sysdev class, but it doesn't use it, so it can be removed. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-18Merge branch 'acpica' into releaseLen Brown16-1915/+2152
2011-03-16Merge branch 'release' of ↵Linus Torvalds2-0/+137
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] tioca: Fix assignment from incompatible pointer warnings [IA64] mca.c: Fix cast from integer to pointer warning [IA64] setup.c Typo fix "Architechtuallly" [IA64] Add CONFIG_MISC_DEVICES=y to configs that need it. [IA64] disable interrupts at end of ia64_mca_cpe_int_handler() [IA64] Add DMA_ERROR_CODE define. pstore: fix build warning for unused return value from sysfs_create_file pstore: X86 platform interface using ACPI/APEI/ERST pstore: new filesystem interface to platform persistent storage
2011-03-16Merge branch 'x86-trampoline-for-linus' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Fix binutils-2.21 symbol related build failures x86-64, trampoline: Remove unused variable x86, reboot: Fix the use of passed arguments in 32-bit BIOS reboot x86, reboot: Move the real-mode reboot code to an assembly file x86: Make the GDT_ENTRY() macro in <asm/segment.h> safe for assembly x86, trampoline: Use the unified trampoline setup for ACPI wakeup x86, trampoline: Common infrastructure for low memory trampolines Fix up trivial conflicts in arch/x86/kernel/Makefile
2011-03-16Pull pstorev4 into release branchTony Luck2-0/+137
2011-03-16Merge branch 'for-linus' of ↵Linus Torvalds3-20/+8
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: (21 commits) PM / Hibernate: Reduce autotuned default image size PM / Core: Introduce struct syscore_ops for core subsystems PM PM QoS: Make pm_qos settings readable PM / OPP: opp_find_freq_exact() documentation fix PM: Documentation/power/states.txt: fix repetition PM: Make system-wide PM and runtime PM treat subsystems consistently PM: Simplify kernel/power/Kconfig PM: Add support for device power domains PM: Drop pm_flags that is not necessary PM: Allow pm_runtime_suspend() to succeed during system suspend PM: Clean up PM_TRACE dependencies and drop unnecessary Kconfig option PM: Remove CONFIG_PM_OPS PM: Reorder power management Kconfig options PM: Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME) PM / ACPI: Remove references to pm_flags from bus.c PM: Do not create wakeup sysfs files for devices that cannot wake up USB / Hub: Do not call device_set_wakeup_capable() under spinlock PM: Use appropriate printk() priority level in trace.c PM / Wakeup: Don't update events_check_enabled in pm_get_wakeup_count() PM / Wakeup: Make pm_save_wakeup_count() work as documented ...
2011-03-16Merge branch 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wqLinus Torvalds1-3/+3
* 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: fix build failure introduced by s/freezeable/freezable/ workqueue: add system_freezeable_wq rds/ib: use system_wq instead of rds_ib_fmr_wq net/9p: replace p9_poll_task with a work net/9p: use system_wq instead of p9_mux_wq xfs: convert to alloc_workqueue() reiserfs: make commit_wq use the default concurrency level ocfs2: use system_wq instead of ocfs2_quota_wq ext4: convert to alloc_workqueue() scsi/scsi_tgt_lib: scsi_tgtd isn't used in memory reclaim path scsi/be2iscsi,qla2xxx: convert to alloc_workqueue() misc/iwmc3200top: use system_wq instead of dedicated workqueues i2o: use alloc_workqueue() instead of create_workqueue() acpi: kacpi*_wq don't need WQ_MEM_RECLAIM fs/aio: aio_wq isn't used in memory reclaim path input/tps6507x-ts: use system_wq instead of dedicated workqueue cpufreq: use system_wq instead of dedicated workqueues wireless/ipw2x00: use system_wq instead of dedicated workqueues arm/omap: use system_wq in mailbox workqueue: use WQ_MEM_RECLAIM instead of WQ_RESCUER
2011-03-15Merge commit 'v2.6.38' into x86/mmIngo Molnar7-39/+108
Conflicts: arch/x86/mm/numa_64.c Merge reason: Resolve the conflict, update the branch to .38. Signed-off-by: Ingo Molnar <mingo@elte.hu>