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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-06-24 10:11:27 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-06-24 10:11:27 +0200
commit25bc694a8a086bfee6e5b9dd9e53f4de721b0acf (patch)
treea843d17b336c9ea7d4cad67843ebbf255d61ea1f /drivers/pci/pci-driver.c
parent3e26c5feed2add218046ecf91bab3cfa9bf762a6 (diff)
parent000dd5316e1c756a1c028f22e01d06a38249dd4d (diff)
Merge back PCI power management material for v5.3.
Diffstat (limited to 'drivers/pci/pci-driver.c')
-rw-r--r--drivers/pci/pci-driver.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 98af9ecd4a90..bd097ea5925c 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -678,6 +678,7 @@ static bool pci_has_legacy_pm_support(struct pci_dev *pci_dev)
static int pci_pm_prepare(struct device *dev)
{
struct device_driver *drv = dev->driver;
+ struct pci_dev *pci_dev = to_pci_dev(dev);
if (drv && drv->pm && drv->pm->prepare) {
int error = drv->pm->prepare(dev);
@@ -687,7 +688,15 @@ static int pci_pm_prepare(struct device *dev)
if (!error && dev_pm_test_driver_flags(dev, DPM_FLAG_SMART_PREPARE))
return 0;
}
- return pci_dev_keep_suspended(to_pci_dev(dev));
+ if (pci_dev_need_resume(pci_dev))
+ return 0;
+
+ /*
+ * The PME setting needs to be adjusted here in case the direct-complete
+ * optimization is used with respect to this device.
+ */
+ pci_dev_adjust_pme(pci_dev);
+ return 1;
}
static void pci_pm_complete(struct device *dev)
@@ -757,9 +766,11 @@ static int pci_pm_suspend(struct device *dev)
* better to resume the device from runtime suspend here.
*/
if (!dev_pm_test_driver_flags(dev, DPM_FLAG_SMART_SUSPEND) ||
- !pci_dev_keep_suspended(pci_dev)) {
+ pci_dev_need_resume(pci_dev)) {
pm_runtime_resume(dev);
pci_dev->state_saved = false;
+ } else {
+ pci_dev_adjust_pme(pci_dev);
}
if (pm->suspend) {
@@ -1130,10 +1141,13 @@ static int pci_pm_poweroff(struct device *dev)
/* The reason to do that is the same as in pci_pm_suspend(). */
if (!dev_pm_test_driver_flags(dev, DPM_FLAG_SMART_SUSPEND) ||
- !pci_dev_keep_suspended(pci_dev))
+ pci_dev_need_resume(pci_dev)) {
pm_runtime_resume(dev);
+ pci_dev->state_saved = false;
+ } else {
+ pci_dev_adjust_pme(pci_dev);
+ }
- pci_dev->state_saved = false;
if (pm->poweroff) {
int error;