aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/base/power
Commit message (Collapse)AuthorAge
* 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>
* Fix ThinkPad T42 poweroff failure introduced by by "PM: Introduce ↵Rafael J. Wysocki2007-07-26
| | | | | | | | | | | | | | | | pm_power_off_prepare" Commit bd804eba1c8597cbb7cd5a5f9fe886aae16a079a ("PM: Introduce pm_power_off_prepare") caused problems in the poweroff path, as reported by YOSHIFUJI Hideaki / 吉藤英明. Generally, sysdev_shutdown() should be called after the ACPI preparation for powering the system off. To make it happen, we can separate sysdev_shutdown() from device_shutdown() and call it directly wherever necessary. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Tested-by: YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* x86: PM_TRACE supportNigel Cunningham2007-07-21
| | | | | | | | | | | Signed-off-by: Nigel Cunningham <nigel@nigel.suspend2.net> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PM: Do not require dev spew to get PM_DEBUGBen Collins2007-07-19
| | | | | | | | | | | | | | | | In order to enable things like PM_TRACE, you're required to enable PM_DEBUG, which sends a large spew of messages on boot, and often times can overflow dmesg buffer. Create new PM_VERBOSE and shift that to be the option that enables drivers/base/power's messages. Signed-off-by: Ben Collins <bcollins@ubuntu.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PM: remove deprecated dpm_runtime_* routinesAlan Stern2007-07-18
| | | | | | | | | | | This patch (as933) removes the deprecated dpm_runtime_suspend() and dpm_runtime_resume() routines from the PM core. The only user of those routines is the PCMCIA ds driver; local replacements are added. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> CC: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PM: Remove deprecated sysfs filesAlan Stern2007-07-18
| | | | | | | | | | This patch (as932) removes the deprecated sysfs .../power/state attribute files. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PM: Do not check parent state in suspend and resume core codeRafael J. Wysocki2007-07-11
| | | | | | | | | | | | | | | | The checks if the device's parent is in the right state done in drivers/base/power/suspend.c and drivers/base/power/resume.c serve no particular purpose, since if the parent is in a wrong power state, the device's suspend or resume callbacks are supposed to return an error anyway. Moreover, they are also useless from the sanity checking point of view, because they rely on the code being checked to set dev->parent->power.power_state.event appropriately, which need not happen if that code is buggy. For these reasons they can be removed. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PM: Remove power_state.event checks from suspend core codeRafael J. Wysocki2007-07-11
| | | | | | | | | | | | | | | The suspend routines should be called for every device during a system sleep transition, regardless of the device's state, so that drivers can regard these method calls as notifications that the system is about to go to sleep, rather than as directives to put their devices into the 'off' state. This is documented in Documentation/power/devices.txt and is already done in the core resume code, so it seems reasonable to make the core suspend code behave accordingly. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PM: Remove prev_state from struct dev_pm_infoRafael J. Wysocki2007-07-11
| | | | | | | | | | | | | | The prev_state member of struct dev_pm_info (defined in include/linux/pm.h) is only used during a resume to check if the device's state before the suspend was 'off', in which case the device is not resumed. However, in such cases the decision whether or not to resume the device should be made on the driver level and the resume callbacks from the device's bus and class should be executed anyway (the may be needed for some things other than just powering on the device). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PM: Simplify suspend_deviceRafael J. Wysocki2007-07-11
| | | | | | | | | | Reduce code duplication in drivers/base/suspend.c by introducing a separate function for printing diagnostic messages. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PM: Remove pm_parent from struct dev_pm_infoRafael J. Wysocki2007-07-11
| | | | | | | | | | | | | The pm_parent member of struct dev_pm_info (defined in include/linux/pm.h) is only used to check if the device's parent is in the right state while the device is being suspended or resumed. However, this can be done just as well with the help of the parent pointer in struct device, so pm_parent can be removed along with some code that handles it. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Power Management: use mutexes instead of semaphoresMatthias Kaehlcke2007-07-11
| | | | | | | | | | The Power Management code uses semaphores as mutexes. Use the mutex API instead of the (binary) semaphores. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* remove "struct subsystem" as it is no longer neededGreg Kroah-Hartman2007-05-02
| | | | | | | | | | | We need to work on cleaning up the relationship between kobjects, ksets and ktypes. The removal of 'struct subsystem' is the first step of this, especially as it is not really needed at all. Thanks to Kay for fixing the bugs in this patch. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* define platform wakeup hook, use in pci_enable_wake()David Brownell2007-04-27
| | | | | | | | | | | | | | | | | | | | This defines a platform hook to enable/disable a device as a wakeup event source. It's initially for use with ACPI, but more generally it could be used whenever enable_irq_wake()/disable_irq_wake() don't suffice. The hook is called -- if available -- inside pci_enable_wake(); and the semantics of that call are enhanced so that support for PCI PME# is no longer needed. It can now work for devices with "legacy PCI PM", when platform support allows it. (That support would use some board-specific signal for for the same purpose as PME#.) [akpm@linux-foundation.org: Make it compile with CONFIG_PM=n] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Driver core: remove use of rwsemGreg Kroah-Hartman2007-04-27
| | | | | | | | This lock is never used by the rest of the driver core, so the fact that we are grabbing it here means it isn't correct... Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Driver core: add suspend() and resume() to struct device_typeDmitry Torokhov2007-04-27
| | | | | | | | | | | | | | | Driver core: add suspend() and resume() to struct device_type In cases when there are devices of different types in the same class we can't use class's implementation of suspend and resume methods and we need to add them to struct device_type instead. Also fix error handling in resume code (we should not try to call class's resume method iof bus's resume method for the device failed. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] PM: use kobject_name() to access kobject namesDmitry Torokhov2007-04-11
| | | | | | | | | Noone should use kobj.name directly since it may contain garbage. Objects with longer names have them stored in separately allocated memory pointed to by kobj->k_name. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Driver core: fix comments in drivers/base/power/resume.cDmitry Torokhov2006-09-26
| | | | | | | | Driver core: fix comments in drivers/base/power/resume.c Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PM: device_suspend/resume may sleepPavel Machek2006-09-26
| | | | | | | | | This adds warning when someone tries them from atomic context. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PM: no suspend_prepare() phaseDavid Brownell2006-09-26
| | | | | | | | | | | | Remove the new suspend_prepare() phase. It doesn't seem very usable, has never been tested, doesn't address fault cleanup, and would need a sibling resume_complete(); plus there are no real use cases. It could be restored later if those issues get resolved. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PM: add kconfig option for deprecated .../power/state filesDavid Brownell2006-09-26
| | | | | | | | | | | | Add a new PM_SYSFS_DEPRECATED config option to control whether or not the /sys/devices/.../power/state files are provided. This will make it easier to get rid of that mechanism when the time comes, and to verify that userspace tools work right without it. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PM: update docs for writing .../power/stateDavid Brownell2006-09-26
| | | | | | | | | | | | | | | Updates to match current code: - Make writes to the /sys/devices/.../power/state files fail cleanly if the device requires the irqs-off call variants. - Fix comments describing the /sys/devices/.../power/state file writes to match the code; the last several releases have invalidated the previous text. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PM: issue PM_EVENT_PRETHAWDavid Brownell2006-09-26
| | | | | | | | | | | | | | | | This patch is the first of this series that should actually change any behavior ... by issuing the new event, now tha the rest of the kernel is prepared to receive it. This converts the PM core to issue the new PRETHAW message, which the rest of the kernel is now ready to receive. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* make suspend quieterDavid Brownell2006-09-26
| | | | | | | | | | Fix a goof in Linus' recent PM API updates: don't emit any messages in the typical NOP "already suspended it" late suspend case. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Suspend infrastructure cleanup and extensionLinus Torvalds2006-09-26
| | | | | | | | | | | | Allow devices to participate in the suspend process more intimately, in particular, allow the final phase (with interrupts disabled) to also be open to normal devices, not just system devices. Also, allow classes to participate in device suspend. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-30
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PATCH] core: use list_move()Akinobu Mita2006-06-26
| | | | | | | | | | | This patch converts the combination of list_del(A) and list_add(A, B) to list_move(A, B). Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Akinobu Mita <mita@miraclelinux.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Enable minimal per-device resume tracingLinus Torvalds2006-06-24
| | | | | | | | | This is the minimal resume trace code to find which device resume (if any) results in problems. Usually, you'd use the information this generates as a starting point to adding more fine-grained trace event points. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Add some basic resume trace facilitiesLinus Torvalds2006-06-24
| | | | | | | | | | Considering that there isn't a lot of hw we can depend on during resume, this is about as good as it gets. This is x86-only for now, although the basic concept (and most of the code) will certainly work on almost any platform. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Driver core: PM_DEBUG device suspend() messages become informativeDavid Brownell2006-06-21
| | | | | | | | | | | | | This makes the driver model PM suspend debug messages more useful, by (a) explaining what event is being sent, since not all suspend() requests mean the same thing; (b) reporting when a PM_EVENT_SUSPEND call is allowing the device to issue wakeup events. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] Driver Core: CONFIG_DEBUG_PM covers drivers/base/power tooDavid Brownell2006-06-21
| | | | | | | | The drivers/base/power PM debug messages should appear when either PM or driver model debug are enabled. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] revert "swsusp add check for suspension of X controlled devices"Andrew Morton2006-05-31
| | | | | | | | | | | | | | | | | | | | | | | From: Andrew Morton <akpm@osdl.org> Revert commit ff4da2e262d2509fe1bacff70dd00934be569c66. It broke APM suspend, probably because APM doesn't switch back to a VT when suspending. Tracked down by Matt Mackall <mpm@selenic.com> Rafael sayeth: "It only fixed the theoretical issue that a quick-handed user could switch to X after processes have been frozen and before the devices are suspended. With the current userland suspend tools it shouldn't be necessary." Cc: Pavel Machek <pavel@ucw.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pm: print name of failed suspend functionAndrew Morton2006-04-14
| | | | | | | | | | | | | | | | | | | | Print more diagnostic info to help identify the source of power management suspend failures. Example: usb_hcd_pci_suspend(): pci_set_power_state+0x0/0x1af() returns -22 pci_device_suspend(): usb_hcd_pci_suspend+0x0/0x11b() returns -22 suspend_device(): pci_device_suspend+0x0/0x34() returns -22 Work-in-progress. It needs lots more suspend_report_result() calls sprinkled everywhere. Cc: Patrick Mochel <mochel@digitalimplant.org> Cc: Pavel Machek <pavel@ucw.cz> Cc: Nigel Cunningham <nigel@suspend2.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] swsusp: add check for suspension of X-controlled devicesRafael J. Wysocki2006-03-23
| | | | | | | | | | It is unsafe to suspend devices if the hardware is controlled by X. Add an extra check to prevent this from happening. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix Userspace interface breakage in power/statePavel Machek2006-02-06
| | | | | | | Prevent passing invalid values down to the drivers. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] drivers/base/: proper prototypesAdrian Bunk2006-02-06
| | | | | | | | | | | | | | | This patch contains the following changes: - move prototypes to base.h - sys.c should #include "base.h" for getting the prototype of it's global function system_bus_init() Note that hidden in this patch there's a bugfix: Caller and callee disagreed regarding the return type of sysdev_shutdown(). Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] device_shutdown can loop if the driver frees itselfMichael Richardson2006-01-13
| | | | | | | | | | | | | | | | | | This patch changes device_shutdown() to use the newly introduced safe reverse list traversal. We experienced loops on system reboot if we had removed and re-inserted our device from the device list. We noticed this problem on PPC405. Our PCI IDE device comes and goes a lot. Our hypothesis was that there was a loop caused by the driver->shutdown freeing memory. It is possible that we do something wrong as well, but being unable to reboot is kind of nasty. Signed-off-by: Michael Richardson <mcr@marajade.sandelman.ca> Cc: Patrick Mochel <mochel@digitalimplant.org> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] Add bus_type probe, remove, shutdown methods.Russell King2006-01-13
| | | | | | | | | | | | | | | Add bus_type probe, remove and shutdown methods to replace the corresponding methods in struct device_driver. This matches the way we handle the suspend/resume methods. Since the bus methods override the device_driver methods, warn if a device driver is registered whose methods will not be called. The long-term idea is to remove the device_driver methods entirely. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] pcmcia: merge suspend into device modelDominik Brodowski2006-01-05
| | | | | | | | | | Merge the suspend and resume methods for 16-bit PCMCIA cards into the device model -- for both runtime power management and suspend to ram/disk. Bugfix in ds.c by Richard Purdie Signed-Off-By: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] drivers/base/power/runtime.c: #if 0 dpm_set_power_state()Adrian Bunk2006-01-04
| | | | | | | | This patch #if 0's an unused global function. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] fix remaining missing includesTim Schmielau2005-11-07
| | | | | | | | | | Fix more include file problems that surfaced since I submitted the previous fix-missing-includes.patch. This should now allow not to include sched.h from module.h, which is done by a followup patch. Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] USB: fix pm patches with CONFIG_PM off part 2Andrew Morton2005-10-28
| | | | | | | | | | | | | | | With CONFIG_PM=n: drivers/built-in.o(.text+0x1098c): In function `hub_thread': drivers/usb/core/hub.c:2673: undefined reference to `.dpm_runtime_resume' drivers/built-in.o(.text+0x10998):drivers/usb/core/hub.c:2674: undefined reference to `.dpm_runtime_resume' Please, never ever ever put extern decls into .c files. Use the darn header files :( Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] root hub changes (lesser half)David Brownell2005-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch collects various small updates related to root hubs, to shrink later patches which build on them. - For root hub suspend/resume support: * Make the existing usb_hcd_resume_root_hub() routine respect pmcore locking, exporting and using the dpm_runtime_resume() method. * Add a new usb_hcd_suspend_root_hub() to pair with that routine. (Essential to make OHCI autosuspend behave again...) * HC_SUSPENDED by itself only refers to the root hub's downstream ports. So let HCDs see root hub URBs unless the parent device is suspended. - Remove an assertion we no longer need (and now, also don't want). - Generic suspend/resume updates to work better with swsusp. * Ignore the FREEZE vs SUSPEND distinction for hardware; trying to use it breaks the swsusp snapshots it's supposed to help (sigh). * On resume, mark devices as resumed right away, but then do nothing else if the device is marked NOTATTACHED. These changes shouldn't be very noticable by themselves. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> drivers/base/power/runtime.c | 1 drivers/usb/core/hcd.c | 64 ++++++++++++++++++++++++++++++++++++++----- drivers/usb/core/hcd.h | 1 drivers/usb/core/hub.c | 45 ++++++++++++++++++++++++------ drivers/usb/core/usb.c | 20 +++++++++---- drivers/usb/core/usb.h | 1 6 files changed, 111 insertions(+), 21 deletions(-)
* [PATCH] one less word in struct deviceDavid Brownell2005-10-28
| | | | | | | | | | | | | | | This saves a word from "struct device" ... there's a refcounting mechanism stub that's rather ineffective (the values are never even tested!), which can safely be deleted. With this patch it uses normal device refcounting, so any potential users of the pm_parent mechanism will be more correct. (That mechanism is actually unusable for now though; it does nothing.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> drivers/base/power/main.c | 26 +++----------------------- include/linux/pm.h | 1 - 2 files changed, 3 insertions(+), 24 deletions(-)
* [PATCH] driver model wakeup flagsDavid Brownell2005-10-28
| | | | | | | | | | | | | | | | | | | | | | This is a refresh of an earlier patch to add "wakeup" support to the PM core model. This provides per-device bus-neutral control of the use of wakeup events. * "struct device_pm_info" has two bits that are initialized as part of setting up the enclosing struct device: - "can_wakeup", reflecting hardware capabilities - "may_wakeup", the policy setting (when CONFIG_PM) * There's a writeable sysfs "wakeup" file, with one of two values: - "enabled", when the policy is to allow wakeup - "disabled", when the policy is not to allow it - "" if the device can't currently issue wakeups By default, wakeup is enabled on all devices that support it. If its driver doesn't support it ... treat it as a bug. :) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] swsusp: switch pm_message_t to structPavel Machek2005-09-05
| | | | | | | | | | | | | | This adds type-checking to pm_message_t, so that people can't confuse it with int or u32. It also allows us to fix "disk yoyo" during suspend (disk spinning down/up/down). [We've tried that before; since that cpufreq problems were fixed and I've tried make allyes config and fixed resulting damage.] Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Alexander Nyberg <alexn@telia.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Driver core: Don't "lose" devices on suspend on failureBenjamin Herrenschmidt2005-06-20
| | | | | | | | I think we need this patch or we might "lose" devices to the dpm_irq_off list if a failure occurs during the suspend process. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] Driver Core: drivers/base - drivers/i2c/chips/adm1026.c: update ↵Yani Ioannou2005-06-20
| | | | | | | device attribute callbacks Signed-off-by: Yani Ioannou <yani.ioannou@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] Add a semaphore to struct device to synchronize calls to its driver.mochel@digitalimplant.org2005-06-20
| | | | | | | | | | | | This adds a per-device semaphore that is taken before every call from the core to a driver method. This prevents e.g. simultaneous calls to the ->suspend() or ->resume() and ->probe() or ->release(), potentially saving a whole lot of headaches. It also moves us a step closer to removing the bus rwsem, since it protects the fields in struct device that are modified by the core. Signed-off-by: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] Driver Core: remove driver model detach_stateDavid Brownell2005-05-17
| | | | | | | | | | | | | | | | The driver model has a "detach_state" mechanism that: - Has never been used by any in-kernel drive; - Is superfluous, since driver remove() methods can do the same thing; - Became buggy when the suspend() parameter changed semantics and type; - Could self-deadlock when called from certain suspend contexts; - Is effectively wasted documentation, object code, and headspace. This removes that "detach_state" mechanism; net code shrink, as well as a per-device saving in the driver model and sysfs. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-18 06:35:08 -0500