From: Shaohua Li Date: Fri, 20 Oct 2006 21:45:32 +0000 (-0700) Subject: PCI: reset pci device state to unknown state for resume X-Git-Tag: v2.6.19-rc4~71^2~1 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2449e06a5696b7af1c8a369b04c97f3b139cf3bb;p=pandora-kernel.git PCI: reset pci device state to unknown state for resume Considering below scenario: 1.Unload a PCI device's driver, the device ->current remains in PCI_D0. 2.Do suspend/resume circle. After that, BIOS puts the device to D3. 3.Reload the device driver. The calling pci_set_power_state in the driver can't change the state to D0, as set_power_state thinks the device is already in D0. A bug is reported at http://bugzilla.kernel.org/show_bug.cgi?id=6024 Pat attached a patch at http://marc.theaimsgroup.com/?l=linux-pci&m=114049761428561&w=2 for this issue, but it's lost. As pci_set_power_state can handle D3 -> D0 correctly (restore config space), I simplified Patrick's patch. Signed-off-by: Shaohua Li Cc: Patrick Mochel Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed