mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

PM / mfd: intel-lpss: Use DPM_FLAG_SMART_SUSPEND 

Make the intel-lpss driver set DPM_FLAG_SMART_SUSPEND for its
devices which will allow them to stay in runtime suspend during
system suspend unless they need to be reconfigured for some reason.

Also make it avoid resuming its child devices if they have
DPM_FLAG_SMART_SUSPEND set to allow them to remain in runtime
suspend during system suspend.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki 2018-01-03 01:34:53 +01:00
parent 877b3729ca
commit 8425ec7faf
1 changed files with 5 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/mfd/intel-lpss.c
View File

@ -450,6 +450,8 @@ int intel_lpss_probe(struct device *dev,
if (ret)
goto err_remove_ltr;
dev_pm_set_driver_flags(dev, DPM_FLAG_SMART_SUSPEND);
return 0;
err_remove_ltr:
@ -478,7 +480,9 @@ EXPORT_SYMBOL_GPL(intel_lpss_remove);
static int resume_lpss_device(struct device *dev, void *data)
{
pm_runtime_resume(dev);
if (!dev_pm_test_driver_flags(dev, DPM_FLAG_SMART_SUSPEND))
pm_runtime_resume(dev);
return 0;
}