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drivers/ide/pci/sc1200.c: fix suspend/resume buglets and warnings 

* We shouldn't bother with dev->current_state, the PCI API functions we
  call manage this for us (and do a far better job at it too).

* Remove pci_set_power_state(dev, PCI_D0) call in resume, as
  pci_enable_device() does the same thing.

* Check pci_enable_device() return value.  If it failed, fail
  the entire resume and avoid programming timings into the [potentially
  dead/asleep] chip.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Jeff Garzik 2007-10-26 20:31:15 +02:00 committed by Bartlomiej Zolnierkiewicz
parent d5271be6b5
commit 9d43481364
1 changed files with 5 additions and 4 deletions
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9
drivers/ide/pci/sc1200.c
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@ -324,17 +324,18 @@ static int sc1200_suspend (struct pci_dev *dev, pm_message_t state)
pci_disable_device(dev);
pci_set_power_state(dev, pci_choose_state(dev, state));
dev->current_state = state.event;
return 0;
}
static int sc1200_resume (struct pci_dev *dev)
{
ide_hwif_t *hwif = NULL;
int i;
i = pci_enable_device(dev);
if (i)
return i;
pci_set_power_state(dev, PCI_D0); // bring chip back from sleep state
dev->current_state = PM_EVENT_ON;
pci_enable_device(dev);
//
// loop over all interfaces that are part of this pci device:
//