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usb: dwc3: gadget: Submit endxfer command if delayed during disconnect

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[ Upstream commit 8422b769fa ]

During a cable disconnect sequence, if ep0state is not in the SETUP phase,
then nothing will trigger any pending end transfer commands.  Force
stopping of any pending SETUP transaction, and move back to the SETUP
phase.

Reviewed-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
Link: https://lore.kernel.org/r/20220901193625.8727-6-quic_wcheng@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: 730e12fbec53 ("usb: dwc3: gadget: Handle EP0 request dequeuing properly")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wesley Cheng
2022-09-01 12:36:25 -07:00
committed by Greg Kroah-Hartman
parent 9cccdcc95e
commit 352b38d15c
1 changed files with 12 additions and 1 deletions
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13
drivers/usb/dwc3/gadget.c
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@@ -3739,13 +3739,24 @@ static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc)
reg &= ~DWC3_DCTL_INITU2ENA;
dwc3_gadget_dctl_write_safe(dwc, reg);
dwc->connected = false;
dwc3_disconnect_gadget(dwc);
dwc->gadget->speed = USB_SPEED_UNKNOWN;
dwc->setup_packet_pending = false;
usb_gadget_set_state(dwc->gadget, USB_STATE_NOTATTACHED);
dwc->connected = false;
if (dwc->ep0state != EP0_SETUP_PHASE) {
unsigned int dir;
dir = !!dwc->ep0_expect_in;
if (dwc->ep0state == EP0_DATA_PHASE)
dwc3_ep0_end_control_data(dwc, dwc->eps[dir]);
else
dwc3_ep0_end_control_data(dwc, dwc->eps[!dir]);
dwc3_ep0_stall_and_restart(dwc);
}
}
static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)