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2008-07-14Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6Linus Torvalds
* 'bkl-removal' of git://git.lwn.net/linux-2.6: (146 commits) IB/umad: BKL is not needed for ib_umad_open() IB/uverbs: BKL is not needed for ib_uverbs_open() bf561-coreb: BKL unneeded for open() Call fasync() functions without the BKL snd/PCM: fasync BKL pushdown ipmi: fasync BKL pushdown ecryptfs: fasync BKL pushdown Bluetooth VHCI: fasync BKL pushdown tty_io: fasync BKL pushdown tun: fasync BKL pushdown i2o: fasync BKL pushdown mpt: fasync BKL pushdown Remove BKL from remote_llseek v2 Make FAT users happier by not deadlocking x86-mce: BKL pushdown vmwatchdog: BKL pushdown vmcp: BKL pushdown via-pmu: BKL pushdown uml-random: BKL pushdown uml-mmapper: BKL pushdown ...
2008-07-14Merge commit 'v2.6.26' into bkl-removalJonathan Corbet
2008-07-02sony-laptop: BKL pushdownArnd Bergmann
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-27atmel_pwm: Rename the "mck" clock to "pwm_clk"Sedji Gaouaou
The name "mck" causes a conflict on AT91. Call it "pwm_clk" instead. Signed-off-by: Sedji Gaouaou <sedji.gaouaou@atmel.com> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-20hdpu_cpustate: BKL pushdownArnd Bergmann
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-20phantom: BKL pushdownJonathan Corbet
Add explicit lock_kernel calls to phantom_open(). Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-06-11thinkpad-acpi: fix LED handling on older ThinkPadsHenrique de Moraes Holschuh
The less tested codepaths for LED handling, used on ThinkPads 570, 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 and maybe a few others, would write data to kernel memory it had no business touching, for leds number 3 and above. If one is lucky, that illegal write would cause an OOPS, but chances are it would silently corrupt a byte. The problem was introduced in commit af116101, "ACPI: thinkpad-acpi: add sysfs led class support to thinkpad leds (v3.2)". Fix the bug by refactoring the entire code to be far more obvious on what it wants to do. Also do some defensive "constification". Issue reported by Karol Lewandowski <lmctlx@gmail.com> (he's an lucky guy and got an OOPS instead of silent corruption :-) ). Root cause of the OOPS identified by Adrian Bunk <bunk@kernel.org>. Thanks, Adrian! Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Tested-by: Karol Lewandowski <lmctlx@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11thinkpad-acpi: fix initialization error pathsHenrique de Moraes Holschuh
Rework some subdriver init and exit handlers, in order to fix some initialization error paths that were missing, or broken. Hitting those bugs should be extremely rare in the real world, but should that happen, thinkpad-acpi would fail to dealocate some resources and a reboot might well be needed to be able to load the driver again. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11thinkpad-acpi: SW_RADIO to SW_RFKILL_ALL renameHenrique de Moraes Holschuh
Rename SW_RADIO to SW_RFKILL_ALL in thinkpad-acpi code and docs, following 5adad0133907790c50283bf03271d920d6897043 "Input: rename SW_RADIO to SW_RFKILL_ALL". Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-06fujitsu-laptop: autoload module on Lifebook P1510DDan Williams
Signed-off-by: Dan Williams <dcbw@redhat.com> Cc: Jonathan Woithe <jwoithe@physics.adelaide.edu.au> Cc: Len Brown <len.brown@intel.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-04Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb: kgdbts: Use HW breakpoints with CONFIG_DEBUG_RODATA kgdb: use common ascii helpers and put_unaligned_be32 helper
2008-05-30acpi: fix sparse const errorsHarvey Harrison
In this case we want a constant pointer to constant chars: drivers/misc/thinkpad_acpi.c:3824:19: error: Just how const do you want this type to be? Like the error says. drivers/misc/thinkpad_acpi.c:3863:19: error: Just how const do you want this type to be? drivers/misc/thinkpad_acpi.c:3864:19: error: Just how const do you want this type to be? drivers/misc/thinkpad_acpi.c:3865:19: error: Just how const do you want this type to be? drivers/misc/thinkpad_acpi.c:3866:19: error: Just how const do you want this type to be? Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-28kgdbts: Use HW breakpoints with CONFIG_DEBUG_RODATAJason Wessel
Whenever CONFIG_DEBUG_RODATA is set in the kernel config many kernel text sections become read-only, and the use of software breakpoints in the kgdb tests will cause the kernel to fail to complete the start up. Until such time that there is an official API for modifying read-only text sections hardware breakpoints must be used to run the do_fork or sys_open tests or the tests get skipped. Also fix the duplicated include reported by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2008-05-28kgdb: use common ascii helpers and put_unaligned_be32 helperHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2008-05-13drivers/misc/sgi-xp: replace partid_t with a shortDean Nelson
In preparation for supporting greater than 64 partitions replace partid_t by short in drivers/misc/sgi-xp. Signed-off-by: Dean Nelson <dcn@sgi.com> Acked-by: Robin Holt <holt@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-13drivers/misc/sgi-xp: clean up return valuesDean Nelson
Make XP return values more generic to XP and not so tied to XPC by changing enum xpc_retval to xp_retval, along with changing return value prefixes from xpc to xp. Also, cleanup a comment block that referenced some of these return values as well as the handling of BTE related return values. Signed-off-by: Dean Nelson <dcn@sgi.com> Acked-by: Robin Holt <holt@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-05kgdb: 1000 loops for the single step test in kgdbtsJason Wessel
The single step test is not terribly costly and it should be able to pass at 1000 loops successfully in under 1 second. A non-kgdb timing regression was found using this test, but it did not occur frequently because by default the test was only executed a single time. This patch changes the default for the single step test to 1000 iterations and allows for individual configuration of the single step test to further exercise the kgdb subsystem when needed. Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2008-05-05kgdb: trivial sparse fixes in kgdb test-suiteHarvey Harrison
Shadowed variable and integer as NULL pointer fixes: drivers/misc/kgdbts.c:877:6: warning: symbol 'sys_open_test' shadows an earlier one drivers/misc/kgdbts.c:537:27: originally declared here drivers/misc/kgdbts.c:378:22: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:386:22: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:468:30: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:472:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:502:30: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:506:30: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:509:30: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:523:20: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:527:20: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:530:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:541:21: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:545:21: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:548:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:559:30: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:563:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:573:16: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:574:19: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:578:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:588:16: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:589:19: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:593:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:602:16: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:604:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:925:3: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:938:3: warning: Using plain integer as NULL pointer Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2008-04-30Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (179 commits) ACPI: Fix acpi_processor_idle and idle= boot parameters interaction acpi: fix section mismatch warning in pnpacpi intel_menlo: fix build warning ACPI: Cleanup: Remove unneeded, multiple local dummy variables ACPI: video - fix permissions on some proc entries ACPI: video - properly handle errors when registering proc elements ACPI: video - do not store invalid entries in attached_array list ACPI: re-name acpi_pm_ops to acpi_suspend_ops ACER_WMI/ASUS_LAPTOP: fix build bug thinkpad_acpi: fix possible NULL pointer dereference if kstrdup failed ACPI: check a return value correctly in acpi_power_get_context() #if 0 acpi/bay.c:eject_removable_drive() eeepc-laptop: add hwmon fan control eeepc-laptop: add backlight eeepc-laptop: add base driver ACPI: thinkpad-acpi: bump up version to 0.20 ACPI: thinkpad-acpi: fix selects in Kconfig ACPI: thinkpad-acpi: use a private workqueue ACPI: thinkpad-acpi: fluff really minor fix ACPI: thinkpad-acpi: use uppercase for "LED" on user documentation ... Fixed conflicts in drivers/acpi/video.c and drivers/misc/intel_menlow.c manually.
2008-04-30Merge branches 'release', 'acpica', 'bugzilla-10224', 'bugzilla-9772', ↵Len Brown
'bugzilla-9916', 'ec', 'eeepc', 'idle', 'misc', 'pm-legacy', 'sysfs-links-2.6.26', 'thermal', 'thinkpad' and 'video' into release
2008-04-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: remove duplicated include sparc: Add kgdb support. kgdbts: Sparc needs sstep emulation. sparc32: Kill smp_message_pass() and related code. sparc64: Kill PIL_RESERVED, unused. sparc64: Split entry.S up into seperate files.
2008-04-29[IA64] allocate multiple contiguous pages via uncached allocatorDean Nelson
Enable the uncached allocator to allocate multiple pages of contiguous uncached memory. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-29intel_menlo: fix build warningLen Brown
drivers/misc/intel_menlow.c:191: warning: label ‘unregister’ defined but not used Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29drivers: use non-racy method for proc entries creation (2)Denis V. Lunev
Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data be setup before gluing PDE to main tree. Signed-off-by: Denis V. Lunev <den@openvz.org> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Peter Osterlund <petero2@telia.com> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Dmitry Torokhov <dtor@mail.ru> Cc: Neil Brown <neilb@suse.de> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> 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>
2008-04-29proc: remove proc_root from driversAlexey Dobriyan
Remove proc_root export. Creation and removal works well if parent PDE is supplied as NULL -- it worked always that way. So, one useless export removed and consistency added, some drivers created PDEs with &proc_root as parent but removed them as NULL and so on. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29drivers/misc: elide a non-zero test on a result that is never 0Julia Lawall
The function thermal_cooling_device_register always returns either a valid pointer or a value made with ERR_PTR, so a test for non-zero on the result will always succeed. The problem was found using the following semantic match. (http://www.emn.fr/x-info/coccinelle/) //<smpl> @a@ expression E, E1; statement S,S1; position p; @@ E = thermal_cooling_device_register(...) ... when != E = E1 if@p (E) S else S1 @n@ position a.p; expression E,E1; statement S,S1; @@ E = NULL ... when != E = E1 if@p (E) S else S1 @depends on !n@ expression E; statement S,S1; position a.p; @@ * if@p (E) S else S1 //</smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Thomas Sujith <sujith.thomas@intel.com> Cc: Len Brown <len.brown@intel.com> Cc: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29drivers/misc: replace remaining __FUNCTION__ occurrencesHarvey Harrison
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29Misc, phantom, fix pollJiri Slaby
Return ERR even if there are pending data, but hw is not running. Do not decrement count in poll, do it in ioctl, where data are actually read. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29Misc: phantom, add compat ioctlJiri Slaby
Openhaptics uses pointers in _IOC() macros, implement compat for them. Also add _IOC alternatives which are not 32/64 bit dependent (structures passed through aren't yet) -- libphantom will use them. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29ACER_WMI/ASUS_LAPTOP: fix build bugIngo Molnar
randconfig testing in x86.git found the following upstream build bug: drivers/built-in.o: In function `acer_led_exit': acer-wmi.c:(.text+0xdc76e): undefined reference to `led_classdev_unregister' drivers/built-in.o: In function `acer_platform_probe': acer-wmi.c:(.devinit.text+0x63e6): undefined reference to `led_classdev_register' which was due to acer-wmi.o only depending on CONFIG_LEDS_CLASS, while also using a symbol offered by CONFIG_NEW_LEDS. Also fix a similar bug in CONFIG_ASUS_LAPTOP. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29thinkpad_acpi: fix possible NULL pointer dereference if kstrdup failedCyrill Gorcunov
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29eeepc-laptop: add hwmon fan controlCorentin Chary
Adds an hwmon interface to control the fan. Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29eeepc-laptop: add backlightCorentin Chary
Add backlight class support to the eeepc-laptop driver. Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29eeepc-laptop: add base driverEric Cooper
This patch is based on Eric Cooper's work to clean the original asus_acpi given by Asus. It's a platform driver (/sys/devices/platform/eeepc/) wich support: - hotkeys - wlan on/off - camera on/off - cardr on/off Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29ACPI: thinkpad-acpi: bump up version to 0.20Henrique de Moraes Holschuh
Full LED sysfs support, and the rest of the assorted minor fixes and enhancements are a good reason to checkpoint a new version... Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29ACPI: thinkpad-acpi: fix selects in KconfigHenrique de Moraes Holschuh
Add missing select for BACKLIGHT_LCD_SUPPORT, as select doesn't select the dependencies of a symbol for us. Also, "select INPUT" in Kconfig. We are not an Input device, nor are we anywhere close to the input subsystem in the Kconfig tree, so using "depends on INPUT" is not user-friendly at all. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29ACPI: thinkpad-acpi: use a private workqueueHenrique de Moraes Holschuh
Switch all task workers to a private thinkpad-acpi workqueue. This way, we don't risk causing trouble for other tasks scheduled to the default work queue, as our workers end up needing to access the ACPI EC, run ACPI AML code, trigger SMI traps... and none of those are exactly known to be fast, simple operations. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29ACPI: thinkpad-acpi: fluff really minor fixHenrique de Moraes Holschuh
Fix a minor (nano?) thing that bothered me at exactly at the wrong time. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29ACPI: thinkpad-acpi: add sysfs led class support to thinkpad leds (v3.2)Henrique de Moraes Holschuh
Add a sysfs led class interface to the led subdriver. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29ACPI: thinkpad-acpi: add sysfs led class support for thinklight (v3.1)Henrique de Moraes Holschuh
Add a sysfs led class interface to the thinklight (light subdriver). Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29ACPI: thinkpad-acpi: prepare light and LED for sysfs supportHenrique de Moraes Holschuh
Do some preparatory work to add sysfs support to the thinklight and thinkpad leds driver. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29ACPI: thinkpad-acpi: claim tpacpi as an official short handle (v1.1)Henrique de Moraes Holschuh
Unfortunately, a lot of stuff in the kernel has size limitations, so "thinkpad-acpi" ends up eating up too much real estate. We were using "tpacpi" in symbols already, but this shorthand was not visible to userland. Document that the driver will use tpacpi as a short hand where necessary, and use it to name the kernel thread for NVRAM polling (now named "ktpacpi_nvramd"). Also, register a module alias with the shorthand. One can refer to the module using the shorthand name. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29ACPI: thinkpad-acpi: fix brightness dimming control bugHenrique de Moraes Holschuh
ibm-acpi and thinkpad-acpi did not know about bit 5 of the EC backlight level control register (EC 0x31), so it was always forced to zero on any writes. This would disable the BIOS option to *not* use a dimmer backlight level scale while on battery, and who knows what else (there are two other control bits of unknown function). Bit 5 controls the "reduce backlight levels when on battery" optional functionality (active low). Bits 6 and 7 are better left alone as well, instead of being forced to zero. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29ACPI: thinkpad-acpi: rate-limit CMOS/EC unsynced error messagesHenrique de Moraes Holschuh
If userspace applications mess with the CMOS NVRAM, or something causes both the ACPI firmware and thinkpad-acpi to try to change the brightness at the same time, it is possible to have the CMOS and EC registers for the current brightness go out of sync. Should that happen, thinkpad-acpi could be really obnoxious when using a brightness_mode of 3 (both EC and CMOS). Instead of complaining a massive number of times, make sure to complain only once until EC and CMOS are back in sync. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: Joerg Platte <lists@naasa.net> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29ACPI: thinkpad-acpi: enhance box identification output (v2)Henrique de Moraes Holschuh
During initialization, thinkpad-acpi outputs some messages to make sure releavant box identification information is easily available in-line with the rest of the driver messages. Enhance those messages to output the alfanumeric model number as well. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29ACPI: thinkpad-acpi: warn once about weird hotkey masksHenrique de Moraes Holschuh
thinkpad-acpi knows for a while now how to best program the hotkeys by default, and always enable them by default. Unfortunately, this information has not filtered down everywhere it needs to, yet. Notably, old ibm-acpi documentation and most "thinkpad setup guides" will have wrong information on this area. Warn the local admin once whenever any of the following patterns are met: 1. Attempts to set hotkey mask to 0xffff (artifact from docs and config for the old ibm-acpi driver and behaviour). This mask makes no real-world sense; 2. Attempts to set hotkey mask to 0xffffffff, which means the user is trying to just have "everything work" without even reading the documentation, or that we need to get a bug report, because there is a new thinkpad out there with new exciting hot keys :-) 3. Attempts to set hotkey mask to 0xffffff, which is almost never the correct way to set up volume and brightness event reporting (and with the current state-of-the-art, it is known to never be right way to do it). The driver will perform any and all requested operations, though, regardless of any warnings. I hope these warnings can be removed one or two years from now. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29ACPI: thinkpad-acpi: BIOS backlight mode helper (v2.1)Henrique de Moraes Holschuh
Lenovo ThinkPads with generic ACPI backlight level control can be easily set to react to keyboard brightness key presses in a more predictable way than what they do when in "DOS / bootloader" mode after Linux brings up the ACPI interface. The switch to the ACPI backlight mode in the firmware is designed to be safe to use only as an one way trapdoor. One is not to force the firmware to switch back to "DOS/bootloader" mode except by rebooting. The mode switch itself is performed by calling any of the ACPI _BCL methods at least once. When in ACPI mode, the backlight firmware just issues (standard) events for the brightness up/down hot key presses along with the non-standard HKEY events which thinkpad-acpi traps, and doesn't touch the hardware. thinkpad-acpi will: 1. Place the ThinkPad firmware in ACPI backlight control mode if one is available 2. Suppress HKEY backlight change notifications by default to avoid double-reporting when ACPI video is loaded when the ThinkPad is in ACPI backlight control mode 3. Urge the user to load the ACPI video driver The user is free to use either the ACPI video driver to get the brightness key events, or to override the thinkpad-acpi default hotkey mask to get them from thinkpad-acpi as well (this will result in duplicate events if ACPI video is loaded, so let's hope distros won't screw this up). Provided userspace is sane, all should work (and *keep* working), which is more that can be said about the non-ACPI mode of the new Lenovo ThinkPad BIOSes when coupled to current userspace and X.org drivers. Full guidelines for backlight hot key reporting and use of the thinkpad-acpi backlight interface have been added to the documentation. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29kgdbts: Sparc needs sstep emulation.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-29ACPI: elide a non-zero test on a result that is never 0Julia Lawall
thermal_cooling_device_register used to return NULL if THERMAL is "n". As the ACPI fan, processor and video drivers SELECT the generic thermal in PATCH 01, this is not a problem any more. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29thermal: add the support for building the generic thermal as a moduleZhang Rui
Build the generic thermal driver as module "thermal_sys". Make ACPI thermal, video, processor and fan SELECT the generic thermal driver, as these drivers rely on it to build the sysfs I/F. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Len Brown <len.brown@intel.com>
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-04 16:30:11 +0000