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[PATCH] pci: cleanup need_restore switch statement 

Cleanup the need_restore switch statement in
pci_set_power_state(). This makes it more safe by explicitly handling
all the PCI power states instead of handling them as the default
case. It also reads a little better IMHO.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
John W. Linville 2005-09-28 17:50:51 -04:00 committed by Greg Kroah-Hartman
parent b30197d2c0
commit d3535fbbce
1 changed files with 7 additions and 7 deletions
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14
drivers/pci/pci.c
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@ -314,19 +314,19 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
* sets PowerState to 0. * sets PowerState to 0.
*/ */
switch (dev->current_state) { switch (dev->current_state) {
case PCI_D0:
case PCI_D1:
case PCI_D2:
pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
pmcsr |= state;
break;
case PCI_UNKNOWN: /* Boot-up */ case PCI_UNKNOWN: /* Boot-up */
if ((pmcsr & PCI_PM_CTRL_STATE_MASK) == PCI_D3hot if ((pmcsr & PCI_PM_CTRL_STATE_MASK) == PCI_D3hot
&& !(pmcsr & PCI_PM_CTRL_NO_SOFT_RESET)) && !(pmcsr & PCI_PM_CTRL_NO_SOFT_RESET))
need_restore = 1; need_restore = 1;
/* Fall-through: force to D0 */ /* Fall-through: force to D0 */
case PCI_D3hot:
case PCI_D3cold:
case PCI_POWER_ERROR:
pmcsr = 0;
break;
default: default:
pmcsr &= ~PCI_PM_CTRL_STATE_MASK; pmcsr = 0;
pmcsr |= state;
break; break;
} }