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path: root/drivers/pci/pci.c
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Diffstat (limited to 'drivers/pci/pci.c')
-rw-r--r--drivers/pci/pci.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 1b807330e500..9d2aa6366fd0 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -525,14 +525,17 @@ pci_raw_set_power_state(struct pci_dev *dev, pci_power_t state)
525 * pci_update_current_state - Read PCI power state of given device from its 525 * pci_update_current_state - Read PCI power state of given device from its
526 * PCI PM registers and cache it 526 * PCI PM registers and cache it
527 * @dev: PCI device to handle. 527 * @dev: PCI device to handle.
528 * @state: State to cache in case the device doesn't have the PM capability
528 */ 529 */
529static void pci_update_current_state(struct pci_dev *dev) 530static void pci_update_current_state(struct pci_dev *dev, pci_power_t state)
530{ 531{
531 if (dev->pm_cap) { 532 if (dev->pm_cap) {
532 u16 pmcsr; 533 u16 pmcsr;
533 534
534 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr); 535 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
535 dev->current_state = (pmcsr & PCI_PM_CTRL_STATE_MASK); 536 dev->current_state = (pmcsr & PCI_PM_CTRL_STATE_MASK);
537 } else {
538 dev->current_state = state;
536 } 539 }
537} 540}
538 541
@@ -575,7 +578,7 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
575 */ 578 */
576 int ret = platform_pci_set_power_state(dev, PCI_D0); 579 int ret = platform_pci_set_power_state(dev, PCI_D0);
577 if (!ret) 580 if (!ret)
578 pci_update_current_state(dev); 581 pci_update_current_state(dev, PCI_D0);
579 } 582 }
580 /* This device is quirked not to be put into D3, so 583 /* This device is quirked not to be put into D3, so
581 don't put it in D3 */ 584 don't put it in D3 */
@@ -588,7 +591,7 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
588 /* Allow the platform to finalize the transition */ 591 /* Allow the platform to finalize the transition */
589 int ret = platform_pci_set_power_state(dev, state); 592 int ret = platform_pci_set_power_state(dev, state);
590 if (!ret) { 593 if (!ret) {
591 pci_update_current_state(dev); 594 pci_update_current_state(dev, state);
592 error = 0; 595 error = 0;
593 } 596 }
594 } 597 }