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734104292f
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Rafael J. Wysocki 734104292f PCI PM: Avoid touching devices behind bridges in unknown state 
It generally is better to avoid accessing devices behind bridges that
may not be in the D0 power state, because in that case the bridges'
secondary buses may not be accessible.  For this reason, during the
early phase of resume (ie. with interrupts disabled), before
restoring the standard config registers of a device, check the power
state of the bridge the device is behind and postpone the restoration
of the device's config space, as well as any other operations that
would involve accessing the device, if that state is not D0.

In such cases the restoration of the device's config space will be
retried during the "normal" phase of resume (ie. with interrupts
enabled), so that the bridge can be put into D0 before that happens.

Also, save standard configuration registers of PCI devices during the
"normal" phase of suspend (ie. with interrupts enabled), so that the
bridges the devices are behind can be put into low power states (we
don't put bridges into low power states at the moment, but we may
want to do it in the future and it seems reasonable to design for
that).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-01-07 11:16:05 -08:00
..
accessibility
acpi ACPI/PCI: PCI MSI _OSC support capabilities called when root bridge added 2009-01-07 11:12:31 -08:00
amba
ata libata: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:43 -08:00
atm
auxdisplay
base Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-01-06 17:02:07 -08:00
block Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus 2008-12-30 17:37:25 -08:00
bluetooth
cdrom
char Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-01-06 17:02:07 -08:00
clocksource Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-01-02 11:44:09 -08:00
connector
cpufreq
cpuidle
crypto
dca
dio
dma
edac edac: driver for i5400 MCH (update) 2009-01-06 15:59:30 -08:00
eisa
firewire
firmware Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-01-06 17:02:07 -08:00
gpio Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-01-06 17:02:07 -08:00
gpu drm: fix ordering of driver unload vs agp unload. 2009-01-07 11:54:57 +10:00
hid Merge branch 'upstream-fixes' into for-next 2009-01-04 01:04:09 +01:00
hwmon Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-01-06 17:02:07 -08:00
i2c Merge branch 'for-next' of git://git.o-hand.com/linux-mfd 2009-01-05 19:04:09 -08:00
ide scc_pata: make use of scc_dma_sff_read_status() 2009-01-06 17:21:02 +01:00
idle i7300_idle: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:39 -08:00
ieee1394
infiniband infiniband: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:39 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2009-01-06 17:14:01 -08:00
isdn ISDN: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:39 -08:00
leds
lguest lguest: do not statically allocate root device 2009-01-06 10:44:34 -08:00
macintosh Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-01-06 17:02:07 -08:00
mca
md dm snapshot: extend exception store functions 2009-01-06 03:05:19 +00:00
media poll: allow f_op->poll to sleep 2009-01-06 15:59:12 -08:00
memstick memstick: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:38 -08:00
message Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-01-06 17:02:07 -08:00
mfd mfd: Fix section mismatch in da903x 2009-01-04 15:31:49 +01:00
misc Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-01-06 17:02:07 -08:00
mmc Merge branch 'master' of ../mmc 2008-12-31 19:56:05 +01:00
mtd mtd: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:38 -08:00
net net: sfc: Use pci_clear_master() to disable bus mastering 2009-01-07 11:13:24 -08:00
nubus
of
oprofile zero i_uid/i_gid on inode allocation 2009-01-05 11:54:28 -05:00
parisc PCI: parisc: use generic pci_swizzle_interrupt_pin() 2009-01-07 11:12:55 -08:00
parport parport: ieee1284: use del_timer_sync() in parport_wait_event() 2009-01-06 15:59:31 -08:00
pci PCI PM: Avoid touching devices behind bridges in unknown state 2009-01-07 11:16:05 -08:00
pcmcia
pnp pnp: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:38 -08:00
power power-supply: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:38 -08:00
ps3
rapidio rapidio: remove excess kernel-doc notation 2009-01-06 15:59:28 -08:00
regulator mfd: Support configurable numbers of DCDCs and ISINKs on WM8350 2009-01-04 12:17:42 +01:00
rtc drivers/rtc: correct an error test 2009-01-06 15:59:25 -08:00
s390 s390: remove s390_root_dev_*() 2009-01-06 10:44:34 -08:00
sbus
scsi remove ide-scsi 2009-01-02 16:12:51 +01:00
serial serial: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:37 -08:00
sh
sn
spi Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-01-06 17:02:07 -08:00
ssb
staging Staging: android: binder: fix build errors 2009-01-06 13:52:46 -08:00
tc
telephony
thermal thermal: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:37 -08:00
uio UIO: Pass information about ioports to userspace (V2) 2009-01-06 10:44:44 -08:00
usb gadget: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:42 -08:00
uwb Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-upstream 2009-01-02 13:17:13 +00:00
video Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-01-06 17:02:07 -08:00
virtio virtio: do not statically allocate root device 2009-01-06 10:44:34 -08:00
w1 w1: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:34 -08:00
watchdog [WATCHDOG] Add support for the WM8350 watchdog 2008-12-31 16:12:54 +00:00
xen xen: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:34 -08:00
zorro
Kconfig
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