system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-07 20:05:15 +00:00
Code Issues Packages Projects Releases Wiki Activity

usb: dwc2: Fix Control Write issue in DMA mode

Browse source 
While sending zlp for DWC2_EP0_STATUS_IN EP direction was changed to IN.
Change it back to complete OUT transfer request.

This affects only on DMA mode, because DMA buffer map/unmap function is
direction sensitive.

Signed-off-by: Razmik Karapetyan <razmik@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Razmik Karapetyan 2016-11-16 15:33:57 -08:00 committed by Felipe Balbi
parent 729e65746d
commit c3b22fe2e4
1 changed files with 7 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
drivers/usb/dwc2/gadget.c
View file

@ -2527,6 +2527,13 @@ static void dwc2_hsotg_complete_in(struct dwc2_hsotg *hsotg,
/* Finish ZLP handling for IN EP0 transactions */
if (hs_ep->index == 0 && hsotg->ep0_state == DWC2_EP0_STATUS_IN) {
dev_dbg(hsotg->dev, "zlp packet sent\n");
/*
* While send zlp for DWC2_EP0_STATUS_IN EP direction was
* changed to IN. Change back to complete OUT transfer request
*/
hs_ep->dir_in = 0;
dwc2_hsotg_complete_request(hsotg, hs_ep, hs_req, 0);
if (hsotg->test_mode) {
int ret;