tree 15552cbb68ec0824681dfdd6a9bad5865b2e62e9
parent 090a3c5322e900f468b3205b76d0837003ad57b2
author Alex Williamson <alex.williamson@redhat.com> 1375992602 -0600
committer Bjorn Helgaas <bhelgaas@google.com> 1376515481 -0600

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

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>