Revert "PCI PM: Register power state of devices during initialization"
authorLinus Torvalds <torvalds@linux-foundation.org>
Fri, 16 Jan 2009 16:14:51 +0000 (08:14 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 16 Jan 2009 16:14:51 +0000 (08:14 -0800)
commit50246dd41ccbcb47beb06d6c1d9355f6b7137a11
treed6febca069bd5734adb2383bbfe87192fad4ef7c
parent7cb36b6ccdca03bd87e8faca7fd920643dd1aec7
Revert "PCI PM: Register power state of devices during initialization"

This reverts commit 98e6e286d7b01deb7453b717aa38ebb69d6cefc0, as Yinghai
Lu reports that it breaks kexec with at least the e1000 and e1000e
drivers.  The reason is that the shutdown sequence puts the hardware
into D3 sleep, and the commit causes us to claim that it then is in D0
(running) state just because we don't understand the PM capabilities.

Which then later makes "pci_set_power_state()" not do anything, and the
device never wakes up properly and just returns 0xff to everything.

Reported-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: From: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Jesse Barnes <jesse.barnes@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/pci/pci.c