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

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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>

Bug: 318577849
Change-Id: I7845e7730e48b0e6de5e2a428c6e6c310602771a
(cherry picked from commit 8422b769fa)
Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
This commit is contained in:
Wesley Cheng
2022-09-01 12:36:25 -07:00
committed by Matthias Männich
parent 02524b7519
commit b68fafef56
1 changed files with 12 additions and 1 deletions
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13
drivers/usb/dwc3/gadget.c
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@@ -3725,13 +3725,24 @@ 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)