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Merge "dwc3: gadget: Don't block doorbell before halting USB controller"

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This commit is contained in:
qctecmdr 2020-06-05 05:06:33 -07:00 • committed by Gerrit - the friendly Code Review server
commit 86bb23c4e5
1 changed files with 8 additions and 5 deletions
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13
drivers/usb/dwc3/gadget.c
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@ -1962,7 +1962,7 @@ static int dwc3_gadget_set_selfpowered(struct usb_gadget *g,
return 0;
}
static void dwc3_stop_active_transfers(struct dwc3 *dwc)
static void dwc3_stop_active_transfers(struct dwc3 *dwc, bool block_db)
{
u32 epnum;
@ -1976,9 +1976,11 @@ static void dwc3_stop_active_transfers(struct dwc3 *dwc)
if (!(dep->flags & DWC3_EP_ENABLED))
continue;
if (dep->gsi && dep->direction)
if (dep->gsi && dep->direction && block_db) {
dbg_log_string("block_db with dep:%s", dep->name);
dwc3_notify_event(dwc,
DWC3_CONTROLLER_NOTIFY_CLEAR_DB, 0);
}
dwc3_remove_requests(dwc, dep);
}
@ -2064,9 +2066,10 @@ static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on, int suspend)
* According to dwc3 databook, it is must to remove any active
* transfers before trying to stop USB device controller. Hence
* call dwc3_stop_active_transfers() API before stopping USB
* device controller.
* device controller. Also don't block ringing of doorbell until
* controller is halted (i.e. second param as false).
*/
dwc3_stop_active_transfers(dwc);
dwc3_stop_active_transfers(dwc, false);
reg &= ~DWC3_DCTL_RUN_STOP;
@ -3264,7 +3267,7 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
dwc3_ep0_stall_and_restart(dwc);
}
dwc3_stop_active_transfers(dwc);
dwc3_stop_active_transfers(dwc, true);
dwc3_clear_stall_all_ep(dwc);
/* Reset device address to zero */