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Commit 2b046bc5 authored by Gregory Herrero's avatar Gregory Herrero Committed by Felipe Balbi
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usb: dwc2: host: spinlock release channel 



Prevent dwc2 driver from accessing channel while it frees it.

Acked-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarGregory Herrero <gregory.herrero@intel.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 26a19ea6

drivers/usb/dwc2/hcd_ddma.c

+4 −0
Original line number Diff line number Diff line
@@ -360,6 +360,8 @@ int dwc2_hcd_qh_init_ddma(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh, 
 */

void dwc2_hcd_qh_free_ddma(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh)

{

	unsigned long flags;



	dwc2_desc_list_free(hsotg, qh);



	/*
@@ -369,8 +371,10 @@ void dwc2_hcd_qh_free_ddma(struct dwc2_hsotg *hsotg, struct dwc2_qh *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) &&