Remove the need for making dwc3_gadget_suspend() and dwc3_gadget_resume()
to be called in a spinlock, as dwc3_gadget_run_stop() could potentially
take some time to complete.
Reviewed-by: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>
Signed-off-by: Wesley Cheng <quic_wcheng@xxxxxxxxxxx>
---
drivers/usb/dwc3/core.c | 4 ----
drivers/usb/dwc3/gadget.c | 5 +++++
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index c5c238ab3083..23e123a1ab5f 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1976,9 +1976,7 @@ static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg)
case DWC3_GCTL_PRTCAP_DEVICE:
if (pm_runtime_suspended(dwc->dev))
break;
- spin_lock_irqsave(&dwc->lock, flags);
dwc3_gadget_suspend(dwc);
- spin_unlock_irqrestore(&dwc->lock, flags);
synchronize_irq(dwc->irq_gadget);
dwc3_core_exit(dwc);
break;
@@ -2039,9 +2037,7 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg)
return ret;
dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE);
- spin_lock_irqsave(&dwc->lock, flags);
dwc3_gadget_resume(dwc);
- spin_unlock_irqrestore(&dwc->lock, flags);
break;
case DWC3_GCTL_PRTCAP_HOST:
if (!PMSG_IS_AUTO(msg) && !device_can_wakeup(dwc->dev)) {
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 6f2491fc109e..08281c4f47e6 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -4520,12 +4520,17 @@ void dwc3_gadget_exit(struct dwc3 *dwc)
int dwc3_gadget_suspend(struct dwc3 *dwc)
{
+ unsigned long flags;
+
if (!dwc->gadget_driver)
return 0;
dwc3_gadget_run_stop(dwc, false, false);
+
+ spin_lock_irqsave(&dwc->lock, flags);
dwc3_disconnect_gadget(dwc);
__dwc3_gadget_stop(dwc);
+ spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
