Added port connection status checking which prevents exiting from
Partial Power Down mode from _dwc2_hcd_resume() when no entering
to Partial Power Down mode happened.
Signed-off-by: Artur Petrosyan <arturp@xxxxxxxxxxxx>
---
drivers/usb/dwc2/hcd.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index 1d18258b5ff8..8367902a47eb 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -4544,6 +4544,9 @@ static int _dwc2_hcd_resume(struct usb_hcd *hcd)
struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd);
unsigned long flags;
int ret = 0;
+ u32 hprt0;
+
+ hprt0 = dwc2_read_hprt0(hsotg);
spin_lock_irqsave(&hsotg->lock, flags);
@@ -4553,7 +4556,8 @@ static int _dwc2_hcd_resume(struct usb_hcd *hcd)
if (hsotg->lx_state != DWC2_L2)
goto unlock;
- if (hsotg->params.power_down != DWC2_POWER_DOWN_PARAM_PARTIAL) {
+ if (hsotg->params.power_down != DWC2_POWER_DOWN_PARAM_PARTIAL ||
+ hprt0 & HPRT0_CONNSTS) {
hsotg->lx_state = DWC2_L0;
goto unlock;
}
--
2.11.0
