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Power management fix for v4.15-rc3

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This fixes an issue in the device runtime PM framework that prevents
 customer devices from resuming if runtime PM is disabled for one or
 more of their supplier devices (as reflected by device links between
 those devices).
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Merge tag 'pm-4.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fix from Rafael Wysocki:
 "This fixes an issue in the device runtime PM framework that prevents
  customer devices from resuming if runtime PM is disabled for one or
  more of their supplier devices (as reflected by device links between
  those devices)"

* tag 'pm-4.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / runtime: Fix handling of suppliers with disabled runtime PM
This commit is contained in:
Linus Torvalds 2017-12-08 09:58:10 -08:00
commit 7ed9fd2e29
1 changed files with 2 additions and 1 deletions
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3
drivers/base/power/runtime.c
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@ -276,7 +276,8 @@ static int rpm_get_suppliers(struct device *dev)
continue; continue;
retval = pm_runtime_get_sync(link->supplier); retval = pm_runtime_get_sync(link->supplier);
if (retval < 0) { /* Ignore suppliers with disabled runtime PM. */
if (retval < 0 && retval != -EACCES) {
pm_runtime_put_noidle(link->supplier); pm_runtime_put_noidle(link->supplier);
return retval; return retval;
} }