dwc3-msm: Use pm_runtime_put_sync_suspend()
With data role swap (e.g. UFP -> DFP), USB doesn't go into LPM
while stopping UFP mode. This results into no enumeration of
connected USB device in DFP mode.
pm_runtime_put_sync() performs 2 operations:
a. rpm_idle()
b. rpm_suspend() with rpmflags set with AUTO
USB device sets use_autosuspend to true with its power device.
Hence rpm_suspend() exits with updating pm_suspend_timer_fn()
to suspend device in future time. USB driver does have requirement
to make sure that USB always goes through LPM whenever there is
data role change. Hence replace usage of pm_runtime_put_sync()
by pm_runtime_sync_suspend() which calls USB driver suspend
functionality without considering autosuspend flag.
Change-Id: Ie4fff17376626ec27e07af7ee6e22c59ba0c00fb
Signed-off-by: Mayank Rana <mrana@codeaurora.org>
diff --git a/drivers/usb/dwc3/dwc3-msm.c b/drivers/usb/dwc3/dwc3-msm.c
index 841d1a9..b6ad39b 100644
--- a/drivers/usb/dwc3/dwc3-msm.c
+++ b/drivers/usb/dwc3/dwc3-msm.c
@@ -4070,7 +4070,7 @@
* which was incremented upon cable connect in
* OTG_STATE_B_IDLE state
*/
- pm_runtime_put_sync(mdwc->dev);
+ pm_runtime_put_sync_suspend(mdwc->dev);
dbg_event(0xFF, "!BSV psync",
atomic_read(&mdwc->dev->power.usage_count));
work = 1;