linux/drivers/base
Alan Stern fe6b91f470 PM / Driver core: leave runtime PM enabled during system shutdown
Disabling all runtime PM during system shutdown turns out not to be a
good idea, because some devices may need to be woken up from a
low-power state at that time.

The whole point of disabling runtime PM for system shutdown was to
prevent untimely runtime-suspend method calls.  This patch (as1504)
accomplishes the same result by incrementing the usage count for each
device and waiting for ongoing runtime-PM callbacks to finish.  This
is what we already do during system suspend and hibernation, which
makes sense since the shutdown method is pretty much a legacy analog
of the pm->poweroff method.

This fixes a recent regression on some OMAP systems introduced by
commit af8db1508f (PM / driver core:
disable device's runtime PM during shutdown).

Reported-and-tested-by: NeilBrown <neilb@suse.de>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-12-07 22:26:56 +01:00
..
power PM Sleep: Do not extend wakeup paths to devices with ignore_children set 2011-11-17 21:39:33 +01:00
regmap drivers/base: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required. 2011-10-31 19:31:38 -04:00
Kconfig Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2011-07-25 23:06:24 -07:00
Makefile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap 2011-07-23 11:14:47 -07:00
attribute_container.c [SCSI] attirbute_container: Initialize sysfs attributes with sysfs_attr_init 2010-03-27 15:15:24 -04:00
base.h drivers/base: base.h implicitly depends on <linux/notifier.h> 2011-10-31 19:31:39 -04:00
bus.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-01-13 10:05:56 -08:00
class.c class: Implement support for class attrs in tagged sysfs directories. 2011-10-19 19:24:15 -04:00
core.c PM / Driver core: leave runtime PM enabled during system shutdown 2011-12-07 22:26:56 +01:00
cpu.c drivers/base/cpu.c: fix the output from /sys/devices/system/cpu/offline 2010-05-21 09:37:28 -07:00
dd.c drivers: base: print rejected matches with DEBUG_DRIVER 2011-09-26 16:21:15 -07:00
devres.c base/devres.c: quiet sparse noise about context imbalance 2011-08-22 14:12:24 -07:00
devtmpfs.c drivers/base/devtmpfs.c: correct annotation of `setup_done' 2011-08-08 13:53:50 -07:00
dma-coherent.c drivers/base: dma-coherent.c is a module and needs module.h 2011-10-31 19:31:38 -04:00
dma-mapping.c drivers/base: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required. 2011-10-31 19:31:38 -04:00
driver.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
firmware.c firmware: change firmware_kset to firmware_kobj 2008-01-24 20:40:23 -08:00
firmware_class.c firmware loader: allow builtin firmware load even if usermodehelper is disabled 2011-08-24 15:55:30 -07:00
hypervisor.c drivers/base: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required. 2011-10-31 19:31:38 -04:00
init.c Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev 2009-09-15 09:50:49 -07:00
isa.c dma-mapping: replace all DMA_24BIT_MASK macro with DMA_BIT_MASK(24) 2009-04-07 08:31:12 -07:00
map.c
memory.c mm: memory hotplug: Check if pages are correctly reserved on a per-section basis 2011-10-18 14:01:24 -07:00
module.c driver core: module.c: Use kasprintf 2010-05-21 09:37:29 -07:00
node.c drivers/base/node.c: fix compilation error with older versions of gcc 2011-11-18 10:39:24 -08:00
platform.c Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core 2011-10-25 12:13:59 +02:00
sys.c PM: Remove sysdev suspend, resume and shutdown operations 2011-05-11 21:37:15 +02:00
syscore.c PM: Reintroduce dropped call to check_wakeup_irqs 2011-07-11 10:51:49 +02:00
topology.c topology/sysfs: Provide book id and siblings attributes 2010-09-09 20:41:25 +02:00
transport_class.c drivers/base: transport_class explicitly requires EXPORT_SYMBOL 2011-10-31 19:31:15 -04:00