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Commit 6e967d7e authored by Zeng Tao's avatar Zeng Tao Committed by Felipe Balbi
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usb: dwc2: gadget: fix packet drop issue in dwc2_gadget_handle_nak 



In ISOC transfer, when the NAK interrupt happens, we shouldn't complete
a usb request, the current flow will complete one usb request with no
hardware transfer, this will lead to a packet drop on the usb bus.

Acked-by: default avatarMinas Harutyunyan <hminas@synopsys.com>
Signed-off-by: default avatarZeng Tao <prime.zeng@hisilicon.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 896e5188

drivers/usb/dwc2/gadget.c

+0 −3
Original line number Diff line number Diff line
@@ -2818,9 +2818,6 @@ static void dwc2_gadget_handle_nak(struct dwc2_hsotg_ep *hs_ep) 


		tmp = dwc2_hsotg_read_frameno(hsotg);

		if (using_desc_dma(hsotg)) {

			dwc2_hsotg_complete_request(hsotg, hs_ep,

						    get_ep_head(hs_ep), 0);



			hs_ep->target_frame = tmp;

			dwc2_gadget_incr_frame_num(hs_ep);

			dwc2_gadget_start_isoc_ddma(hs_ep);