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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: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Zeng Tao <prime.zeng@hisilicon.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Zeng Tao 2018-06-12 22:49:06 +08:00 committed by Felipe Balbi
parent 896e518883
commit 6e967d7e2c
1 changed files with 0 additions and 3 deletions
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3
drivers/usb/dwc2/gadget.c
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@ -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);