diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/base/power/runtime.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index acb3f83b8079..04e18abb50bb 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -732,13 +732,16 @@ EXPORT_SYMBOL_GPL(pm_schedule_suspend); * return immediately if it is larger than zero. Then carry out an idle * notification, either synchronous or asynchronous. * - * This routine may be called in atomic context if the RPM_ASYNC flag is set. + * This routine may be called in atomic context if the RPM_ASYNC flag is set, + * or if pm_runtime_irq_safe() has been called. */ int __pm_runtime_idle(struct device *dev, int rpmflags) { unsigned long flags; int retval; + might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); + if (rpmflags & RPM_GET_PUT) { if (!atomic_dec_and_test(&dev->power.usage_count)) return 0; @@ -761,13 +764,16 @@ EXPORT_SYMBOL_GPL(__pm_runtime_idle); * return immediately if it is larger than zero. Then carry out a suspend, * either synchronous or asynchronous. * - * This routine may be called in atomic context if the RPM_ASYNC flag is set. + * This routine may be called in atomic context if the RPM_ASYNC flag is set, + * or if pm_runtime_irq_safe() has been called. */ int __pm_runtime_suspend(struct device *dev, int rpmflags) { unsigned long flags; int retval; + might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); + if (rpmflags & RPM_GET_PUT) { if (!atomic_dec_and_test(&dev->power.usage_count)) return 0; @@ -789,13 +795,16 @@ EXPORT_SYMBOL_GPL(__pm_runtime_suspend); * If the RPM_GET_PUT flag is set, increment the device's usage count. Then * carry out a resume, either synchronous or asynchronous. * - * This routine may be called in atomic context if the RPM_ASYNC flag is set. + * This routine may be called in atomic context if the RPM_ASYNC flag is set, + * or if pm_runtime_irq_safe() has been called. */ int __pm_runtime_resume(struct device *dev, int rpmflags) { unsigned long flags; int retval; + might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); + if (rpmflags & RPM_GET_PUT) atomic_inc(&dev->power.usage_count); |