A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-09 05:39:54 -04:00
Code Issues Projects Releases Packages Wiki Activity

usb: dwc3: Fix incorrect ep0 state on reset

Browse source 
According to the databook ep0 should be in setup
phase during reset. If host issues reset between
control transfers, ep0 will be  in an invalid state.
Fix this my issuing stall and restart on ep0 if it
is not in setup phase.

CRs-Fixed: 2136658
Change-Id: I6dc20c2735a6ce772533ccb5b63ba5d1b01f89d7
Signed-off-by: Sriharsha Allenki <sallenki@codeaurora.org>
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
Signed-off-by: Jack Pham <jackp@codeaurora.org>
This commit is contained in:
Sriharsha Allenki 2017-11-16 17:00:09 +05:30 • committed by Jack Pham
commit f7a9e06d4f
3 changed files with 12 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/usb/dwc3/ep0.c
View file

@ -218,7 +218,7 @@ out:
return ret;
}
static void dwc3_ep0_stall_and_restart(struct dwc3 *dwc)
void dwc3_ep0_stall_and_restart(struct dwc3 *dwc)
{
struct dwc3_ep *dep;

10
drivers/usb/dwc3/gadget.c
View file

@ -3137,6 +3137,16 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
reg &= ~DWC3_DCTL_TSTCTRL_MASK;
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
dwc->test_mode = false;
/*
* From SNPS databook section 8.1.2
* the EP0 should be in setup phase. So ensure
* that EP0 is in setup phase by issuing a stall
* and restart if EP0 is not in setup phase.
*/
if (dwc->ep0state != EP0_SETUP_PHASE)
dwc3_ep0_stall_and_restart(dwc);
dwc3_stop_active_transfers(dwc);
dwc3_clear_stall_all_ep(dwc);
/* Reset device address to zero */

1
drivers/usb/dwc3/gadget.h
View file

@ -109,6 +109,7 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
void dwc3_ep0_interrupt(struct dwc3 *dwc,
const struct dwc3_event_depevt *event);
void dwc3_ep0_out_start(struct dwc3 *dwc);
void dwc3_ep0_stall_and_restart(struct dwc3 *dwc);
int __dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,