From 8425ec7faff005500aad89b9fc00e5ba91ac57b9 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 3 Jan 2018 01:34:53 +0100 Subject: [PATCH] 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 Acked-for-MFD-by: Lee Jones Tested-by: Jarkko Nikula --- drivers/mfd/intel-lpss.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c index 0e0ab9b..9e545eb 100644 --- a/drivers/mfd/intel-lpss.c +++ b/drivers/mfd/intel-lpss.c @@ -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; } -- 2.7.4