PCI: Wake-up devices before saving config space for reset

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Devices come out of reset in D0.  Restoring a device to a different
post-reset state takes more smarts than our simple config space
restore, which can leave devices in an inconsistent state.  For
example, if a device is reset in D3, but the restore doesn't
successfully return the device to D3, then the actual state of the
device and dev->current_state are contradictory.  Put everything
in D0 going into the reset, then we don't need to do anything
special on the way out.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

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Alex Williamson 2013-08-08 14:10:02 -06:00 • committed by Bjorn Helgaas

parent 090a3c5322

commit a6cbaadea0

1 changed files with 7 additions and 0 deletions

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drivers/pci/pci.c

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