Prevent dwc2 driver from accessing channel while it frees it.
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
*/
void dwc2_hcd_qh_free_ddma(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh)
{
+ unsigned long flags;
+
dwc2_desc_list_free(hsotg, qh);
/*
* when it comes here from endpoint disable routine
* channel remains assigned.
*/
+ spin_lock_irqsave(&hsotg->lock, flags);
if (qh->channel)
dwc2_release_channel_ddma(hsotg, qh);
+ spin_unlock_irqrestore(&hsotg->lock, flags);
if ((qh->ep_type == USB_ENDPOINT_XFER_ISOC ||
qh->ep_type == USB_ENDPOINT_XFER_INT) &&