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Commit 9d8da857 authored by Sevak Arakelyan's avatar Sevak Arakelyan Committed by Felipe Balbi
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usb: dwc2: Stop Complete Splits after Data PID == 0 



Stop sending complete split requests in case of ISOC IN split transfers
after getting data with PID0. Otherwise we will get a NYET for each
additional IN token.

Signed-off-by: default avatarSevak Arakelyan <sevaka@synopsys.com>
Signed-off-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 36daf3aa

drivers/usb/dwc2/hcd_intr.c

+6 −1
Original line number Diff line number Diff line
@@ -915,6 +915,8 @@ static int dwc2_xfercomp_isoc_split_in(struct dwc2_hsotg *hsotg, 
{

	struct dwc2_hcd_iso_packet_desc *frame_desc;

	u32 len;

	u32 hctsiz;

	u32 pid;



	if (!qtd->urb)

		return 0;
@@ -932,7 +934,10 @@ static int dwc2_xfercomp_isoc_split_in(struct dwc2_hsotg *hsotg, 


	qtd->isoc_split_offset += len;



	if (frame_desc->actual_length >= frame_desc->length) {

	hctsiz = dwc2_readl(hsotg->regs + HCTSIZ(chnum));

	pid = (hctsiz & TSIZ_SC_MC_PID_MASK) >> TSIZ_SC_MC_PID_SHIFT;



	if (frame_desc->actual_length >= frame_desc->length || pid == 0) {

		frame_desc->status = 0;

		qtd->isoc_frame_index++;

		qtd->complete_split = 0;