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* | Merge branches 'release' and 'fluff' into releaseLen Brown2008-02-07
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/acpi/scan.c include/linux/acpi.h Signed-off-by: Len Brown <len.brown@intel.com>
| * | ACPI: its a directory not a folder....Alan Cox2008-02-07
| |/ | | | | | | | | | | | | The kernel help consistently uses 'directory' Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | Merge branches 'release' and 'wmi-2.6.25' into releaseLen Brown2008-02-07
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| * | ACPI: WMI: Add ACPI-WMI mapping driverCarlos Corbacho2008-02-05
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following is an implementation of the Windows Management Instrumentation (WMI) ACPI interface mapper (PNP0C14). What it does: Parses the _WDG method and exports functions to process WMI method calls, data block query/ set commands (both based on GUID) and does basic event handling. How: WMI presents an in kernel interface here (essentially, a minimal wrapper around ACPI) (const char *guid assume the 36 character ASCII representation of a GUID - e.g. 67C3371D-95A3-4C37-BB61-DD47B491DAAB) wmi_evaluate_method(const char *guid, u8 instance, u32 method_id, const struct acpi_buffer *in, struct acpi_buffer *out) wmi_query_block(const char *guid, u8 instance, struct acpi_buffer *out) wmi_set_block(const char *guid, u38 instance, const struct acpi_buffer *in) wmi_install_notify_handler(acpi_notify_handler handler); wmi_remove_notify_handler(void); wmi_get_event_data(u32 event, struct acpi_buffer *out) wmi_has_guid(const char guid*) wmi_has_guid() is a helper function to find if a GUID exists or not on the system (a quick and easy way for WMI dependant drivers to see if the the method/ block they want exists, since GUIDs are supposed to be unique). Event handling - allow a WMI based driver to register a notifier handler for each GUID with WMI. When a notification is sent to a GUID in WMI, the handler registered with WMI is then called (it is left to the caller to ask for the WMI event data associated with the GUID, if needed). What it won't do: Unicode - The MS article[1] calls for converting between ASCII and Unicode (or vice versa) if a GUID is marked as "string". This is left up to the calling driver. Handle a MOF[1] - the WMI mapper just exports methods, data and events to userspace. MOF handling is down to userspace. Userspace interface - this will be added later. [1] http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx === ChangeLog == v1 (2007-10-02): * Initial release v2 (2007-10-05): * Cleaned up code - split up super "wmi_evaluate_block" -> each external symbol now handles its own ACPI calls, rather than handing off to a "super" method (and in turn, is a lot simpler to read) * Added a find_guid() symbol - return true if a given GUID exists on the system * wmi_* functions now return type acpi_status (since they are just fancy wrappers around acpi_evaluate_object()) * Removed extra debug code v3 (2007-10-27) * More code clean up - now passes checkpatch.pl * Change data block calls - ref MS spec, method ID is not required for them, so drop it from the function parameters. * Const'ify guid in the function call parameters. * Fix _WDG buffer handling - copy the data to our own private structure. * Change WMI from tristate to bool - otherwise the external functions are not exported in linux/acpi.h if you try to build WMI as a module. * Fix more flag comparisons. * Add a maintainers entry - since I wrote this, I should take the blame for it. v4 (2007-10-30) * Add missing brace from after fixing checkpatch errors. * Rewrote event handling - allow external drivers to register with WMI to handle WMI events * Clean up flags and sanitise flag handling v5 (2007-11-03) * Add sysfs interface for userspace. Export events over netlink again. * Remove module left overs, fully convert to built-in driver. * Tweak in-kernel API to use u8 for instance, since this is what the GUID blocks use (so instance cannot be greater than u8). * Export wmi_get_event_data() for in kernel WMI drivers. v6 (2007-11-07) * Split out userspace into a different patch v7 (2007-11-20) * Fix driver to handle multiple PNP0C14 devices - store all GUIDs using the kernel's built in list functions, and just keep adding to the list every time we handle a PNP0C14 devices - GUIDs will always be unique, and WMI callers do not know or care about different devices. * Change WMI event handler registration to use its' own event handling struct; we should not pass an acpi_handle down to any WMI based drivers - they should be able to function with only the calls provided in WMI. * Update my e-mail address v8 (2007-11-28) * Convert back to a module. * Update Kconfig to default to building as a module. * Remove an erroneous printk. * Simply comments for string flag (since we now leave the handling to the caller). v9 (2007-12-07) * Add back missing MODULE_DEVICE_TABLE for autoloading * Checkpatch fixes v10 (2007-12-12) * Workaround broken GUIDs declared expensive without a WCxx method. * Minor cleanups v11 (2007-12-17) * More fixing for broken GUIDs declared expensive without a WCxx method. * Add basic EmbeddedControl region handling. v12 (2007-12-18) * Changed EC region handling code, as per Alexey's comments. v13 (2007-12-27) * Changed event handling so that we can have one event handler registered per GUID, as per Matthew Garrett's suggestion. v14 (2008-01-12) * Remove ACPI debug statements v15 (2008-02-01) * Replace two remaining 'x == NULL' type tests with '!x' v16 (2008-02-05) * Change MAINTAINERS entry, as I am not, and never have been, paid to work on WMI * Remove 'default' line from Kconfig Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk> CC: Matthew Garrett <mjg59@srcf.ucam.org> CC: Alexey Starikovskiy <aystarik@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
* / ACPI: register ACPI thermal zone as generic thermal zone devicesZhang Rui2008-02-01
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | Register ACPI thermal zone as thermal zone device. the new sys I/F for ACPI thermal zone will be like this: /sys/class/thermal: |thermal_zone1: |-----type: "ACPI thermal zone". RO |-----temp: the current temperature. RO |-----mode: the current working mode. RW. the default value is "kernel" which means thermal management is done by ACPI thermal driver. "echo user > mode" prevents all the ACPI thermal driver actions upon any trip points. |-----trip_point_0_temp: the threshold of trip point 0. RO. |-----trip_point_0_type: "critical". RO. the type of trip point 0 This may be one of critical/hot/passive/active[x] for an ACPI thermal zone. ... |-----trip_point_3_temp: |-----trip_point_3_type: "active[1]" Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Thomas Sujith <sujith.thomas@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* ACPI: Make sysfs interface in ACPI power optional.Alexey Starikovskiy2008-01-01
| | | | | | | Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9494 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
* Revert "acpi: make ACPI_PROCFS default to y"Len Brown2007-11-19
| | | | This reverts commit cbff2fbf55c21f50298b1aef1263b11bf510e35f.
* Revert "ACPI: add documentation for deprecated /proc/acpi/battery in ↵Len Brown2007-11-19
| | | | | | ACPI_PROCFS" This reverts commit 6e800af233e0bdf108efb7bd23c11ea6fa34cdeb.
* ACPI: Split out control for /proc/acpi entries from battery, ac, and sbs.Alexey Starikovskiy2007-11-19
| | | | | | | | | Introduce new ACPI_PROCFS_POWER (default Yes) config option and move procfs code in battery, ac, and sbs drivers under it. This is done to allow ACPI_PROCFS to be default No. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
* acpi: make ACPI_PROCFS default to yAndrew Morton2007-11-14
| | | | | | | | | | | | | Zillions of people are getting my-battery-monitor-doesnt-work problems (including me). Lessen the damage by making ACPI_PROCFS default to on. Cc: Len Brown <lenb@kernel.org> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ACPI: add documentation for deprecated /proc/acpi/battery in ACPI_PROCFSJerome Pinot2007-11-10
| | | | | | | | | Add documentation in Kconfig help about the move of /proc/acpi/battery to /sys/class/power_supply when selecting ACPI_PROCFS. This will impact a lot of users and should be documented. Signed-off-by: Jerome Pinot <ngc891@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Pull documentation into release branchLen Brown2007-10-29
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| * acpi: remove double mention of Support for ACPI optionFrans Pop2007-10-29
| | | | | | | | | | | | | | | | | | | | Current description for CONFIG_ACPI includes the word "Support" twice. One effect of this is that in menuconfig the "--->" that indicates the presence of sub-options will not show up unless you have a very wide console. Signed-off-by: Frans Pop <elendil@planet.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
* | ACPI: use select POWER_SUPPLY for AC, BATTERY and SBSAlexey Starikovskiy2007-10-29
|/ | | | | | | | | | | POWER_SUPPLY is needed for AC, battery, and SBS sysfs support. Use 'select' instead of 'depends on', as it is will not be selected by anything else, leading to confusion. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Tested-by: Frans Pop <elendil@planet.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
* Typo: depricated -> deprecatedRolf Eike Beer2007-10-19
| | | | | | | Typo: depricated -> deprecated Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de> Signed-off-by: Adrian Bunk <bunk@kernel.org>
* Pull battery-sbs-ac into release branchLen Brown2007-10-10
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| * ACPI: AC: Add sysfs interfaceAlexey Starikovskiy2007-09-27
| | | | | | | | | | | | | | Refer to Documentation/power_supply_class.txt for interface description. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
| * ACPI: SBS: Add support for power_supply class (and sysfs)Alexey Starikovskiy2007-09-27
| | | | | | | | | | | | | | | | Add support for power_supply class and sysfs interface of it. Refer to Documentation/power_supply_class.txt for interface description. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
| * ACPI: Battery: Add sysfs supportAlexey Starikovskiy2007-09-27
| | | | | | | | | | | | | | Refer to Documentation/power_supply_class.txt for interface description. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
* | acpi_video: kernel build error if !INPUTAndreas Herrmann2007-09-18
|/ | | | | | | | | | | | | | | Commit e9dab1960ac9746fa34eff726b81635147615a79 (ACPI video hotkey: export missing ACPI video hotkey events via input layer) exports ACPI video hotkey events via input layer. But this breaks kernel build if ACPI_VIDEO && !INPUT: LD .tmp_vmlinux1 drivers/built-in.o: In function `acpi_video_bus_remove': drivers/acpi/video.c:2007: undefined reference to `input_unregister_device' ... Signed-off-by: Andreas Herrmann <aherrman@arcor.de> Signed-off-by: Len Brown <len.brown@intel.com>
* reverse CONFIG_ACPI_PROC_EVENT defaultHugh Dickins2007-08-27
| | | | | | | | | | | | | | | | Sigh. Again an ACPI assault on the Thinkpad's Fn+F4 to suspend to RAM. The default and text for CONFIG_THINKPAD_ACPI_INPUT_ENABLED were fixed in -rc3, but now commit 14e04fb34ffa82ee61ae69f98d8fca12d2e8e31c ("ACPI: Schedule /proc/acpi/event for removal") introduces the ACPI_PROC_EVENT config entry, and defaults it to 'n' to disable it again. Change default to y, and add comment to make it clearer that n is for future distros. Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Len Brown <len.brown@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ACPI: Schedule /proc/acpi/event for removalLen Brown2007-08-23
| | | | | | | | | | | | Schedule /proc/acpi/event for removal in 6 months. Re-name acpi_bus_generate_event() to acpi_bus_generate_proc_event() to make sure there is no confusion that it is for /proc/acpi/event only. Add CONFIG_ACPI_PROC_EVENT to allow removal of /proc/acpi/event. There is no functional change if CONFIG_ACPI_PROC_EVENT=y Signed-off-by: Len Brown <len.brown@intel.com>
* ACPI: delete CONFIG_ACPI_PROCFS_SLEEP (again)Len Brown2007-07-31
| | | | | | | | | | | CONFIG_ACPI_PROCFS_SLEEP is a NO-OP -- delete it (again). Apparently 296699de6bdc717189a331ab6bbe90e05c94db06 creating CONFIG_SUSPEND and CONFIG_PM_SLEEP was based on an out-dated version of drivers/acpi/Kconfig, as it erroneously restored this recently deleted config option. Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ACPI: restore CONFIG_ACPI_SLEEPLen Brown2007-07-29
| | | | | | | | | Restore the 2.6.22 CONFIG_ACPI_SLEEP build option, but now shadowing the new CONFIG_PM_SLEEP option. Signed-off-by: Len Brown <len.brown@intel.com> [ Modified to work with the PM config setup changes. ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Introduce CONFIG_SUSPEND for suspend-to-Ram and standbyRafael J. Wysocki2007-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | Introduce CONFIG_SUSPEND representing the ability to enter system sleep states, such as the ACPI S3 state, and allow the user to choose SUSPEND and HIBERNATION independently of each other. Make HOTPLUG_CPU be selected automatically if SUSPEND or HIBERNATION has been chosen and the kernel is intended for SMP systems. Also, introduce CONFIG_PM_SLEEP which is automatically selected if CONFIG_SUSPEND or CONFIG_HIBERNATION is set and use it to select the code needed for both suspend and hibernation. The top-level power management headers and the ACPI code related to suspend and hibernation are modified to use the new definitions (the changes in drivers/acpi/sleep/main.c are, mostly, moving code to reduce the number of ifdefs). There are many other files in which CONFIG_PM can be replaced with CONFIG_PM_SLEEP or even with CONFIG_SUSPEND, but they can be updated in the future. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Don't force-enable suspend/hibernate support just for ACPILinus Torvalds2007-07-26
| | | | | | | It's a totally independent decision for the user whether he wants suspend and/or hibernation support, and ACPI shouldn't care. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ACPI: Kconfig: remove CONFIG_ACPI_SLEEP from sourceLen Brown2007-07-25
| | | | | | | | | | As it was a synonym for (CONFIG_ACPI && CONFIG_X86), the ifdefs for it were more clutter than they were worth. For ia64, just add a few stubs in anticipation of future S3 or S4 support. Signed-off-by: Len Brown <len.brown@intel.com>
* ACPI: Kconfig: always enable CONFIG_ACPI_SLEEP on X86Len Brown2007-07-24
| | | | | | | | | | | | | The SMP dependency on HOTPLUG_CPU and SUSPEND_SMP caused more harm than good -- making ACPI sleep support vanish for configs missing those options. So simply select them on the (ACPI && SMP && X86) systems that need them. Also, remove the prompt for ACPI_SLEEP, virtually nobody (intentionally) enables ACPI without it. Signed-off-by: Len Brown <len.brown@intel.com>
* ACPI: Kconfig: fold /proc/acpi/sleep under CONFIG_ACPI_PROCFSLen Brown2007-07-24
| | | | | | | | | | | | | | | | /proc/acpi/sleep has had its own "default n" option, ACPI_SLEEP_PROC_SLEEP, for many months. Time to delete ACPI_SLEEP_PROC_SLEEP. Users that still need /proc/acpi/sleep can still get it along with the other deprecated /proc/acpi files by enabling CONFIG_ACPI_PROCFS. Also delete ACPI_SLEEP_PROC_FS, which was an umbrella for /proc/acpi/sleep, wakeup, alarm, because it was effectively just a synonym for ACPI_SLEEP. Signed-off-by: Len Brown <len.brown@intel.com>
* ACPI: Kconfig: CONFIG_ACPI_PROCFS now defaults to NLen Brown2007-07-24
| | | | | | | | | | delete "default y" from CONFIG_ACPI_PROCFS (effectively making the default 'N') List exactly what /proc files this option controls, and clarify that it doesn't change non-deprecated files. Signed-off-by: Len Brown <len.brown@intel.com>
* Pull video into release branchLen Brown2007-07-22
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| * ACPI: video: output switch sysfs supportLuming Yu2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Requires CONFIG_VIDEO_OUTPUT_CONTROL and CONFIG_ACPI_VIDEO. After loading output.ko and video.ko, you would have /sys/class/video_output and several device acpi_videoNum there. For example, I got acpi_video0, acpi_video1,acpi_video2,and acpi_video3 under /sys/class/video_output on my T40. I can query the status of output device0 by running " cat /sys/class/video_output/acpi_video0 " The return value is defined in ACPI SPEC B.5.5 _DCS(Return the Status of Output Device). Also you can turn off video1 and turn on video0 by " echo 0 > acpi_video1; echo 0x80000000 > acpi_video0". Please reference ACPI SPEC B.5.7 _DSS for the parameter definition. Please note that it may or may NOT works purely depending on if your vendor providing correct ACPI video extension support in bios. the driver output.ko and video.ko just works like a interface to invoke BIOS. Signed-off-by: Luming Yu <Luming.yu@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | Pull misc into release branchLen Brown2007-07-22
|\ \ | | | | | | | | | | | | | | | Conflicts: Documentation/feature-removal-schedule.txt
| * | ACPI: Use menuconfig objectsJan Engelhardt2007-07-03
| |/ | | | | | | | | | | | | | | | | Use menuconfigs instead of menus, so the whole menu can be disabled at once instead of going through all options. Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
* / ACPI: create CONFIG_ACPI_DEBUG_FUNC_TRACEThomas Renninger2007-07-22
|/ | | | | | | | | | | | | | | | | | | | Split ACPI_DEBUG into function trace enabled and not enabled. Function trace is most of the ACPI_DEBUG costs, but is not much of use for kernel ACPI debugging. Size of kernel image increased on test compile: + 48k (Full ACPI_DEBUG) + 35k (ACPI_DEBUG with function trace compiled out) Performance without function trace is also much better. Also remove ACPI_LV_DEBUG_OBJECT from default debug level as a lot vendors let Store (value, debug) in their code and this might confuse users when it pops up in syslog. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
* Pull sbs into release branchLen Brown2007-04-28
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| * ACPI: sbs: remove I2C Kconfig dependencyVladimir Lebedev2007-03-22
| | | | | | | | | | | | | | SBS does not depend on I2C. Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | Pull misc-for-upstream into release branchLen Brown2007-04-28
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| * | ACPI: word-smith kconfig helpBorislav Petkov2007-04-25
| |/ | | | | | | | | | | Signed-off-by: <bbpetkov@yahoo.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
* / ACPI: ibm-acpi: move driver to drivers/misc hierarchyHenrique de Moraes Holschuh2007-03-25
|/ | | | | | | | ibm-acpi is not an ACPICA driver, so move it to drivers/misc as per Len Brown's request. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
* Pull misc-for-upstream into release branchLen Brown2007-03-09
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| * ACPI: Kconfig: hide ACPI menu when CONFIG_PM=nRobert P. J. Day2007-03-09
| | | | | | | | | | Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | Pull ibm into release branchLen Brown2007-03-09
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| * ACPI: ibm-acpi: make ibm-acpi bay support optionalHenrique de Moraes Holschuh2007-02-22
| | | | | | | | | | | | Make ibm-acpi bay support optional at kernel compile time. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
* | [PATCH] ACPI: make bay depend on dockKristen Carlson Accardi2007-03-01
|/ | | | | | | | | | Since the bay driver depends on the dock driver for proper notification, make this driver depend on the dock driver. Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Acked-by: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Pull remove-hotkey into release branchLen Brown2007-02-16
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| * ACPI: hotkey: remove driver, per feature-removal-schedule.txtLen Brown2007-02-16
| | | | | | | | Signed-off-by: Len Brown <len.brown@intel.com>
* | ACPI: always enable CONFIG_PNPACPI on CONFIG_ACPI kernelsLen Brown2007-02-15
|/ | | | | | | | | | | We removed the ACPI motherboard driver which handled the ACPI=y, PNP=n case, so now we need to enforce that PNP & PNPACPI are always enabled for ACPI kernels. Most major distros ship this way this already. Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
* Pull trivial into test branchLen Brown2007-02-03
|\ | | | | | | | | | | | | | | Conflicts: drivers/acpi/scan.c Signed-off-by: Len Brown <len.brown@intel.com>
| * ACPI: prevent build failure when CONFIG_X86_NUMAQ=yLen Brown2007-02-02
| | | | | | | | | | | | | | | | | | | | | | | | ...by disabling CONFIG_ACPI when CONFIG_X86_NUMAQ=y otherwise arch/i386/pci/Makefile forgets that it needs to build acpi.o drivers/built-in.o: In function `acpi_pci_root_add': pci_root.c:(.text+0x45ec4): undefined reference to `pci_acpi_scan_root' Signed-off-by: Len Brown <len.brown@intel.com>
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