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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>

(cherry picked from commit 8422b769fa46bd429dc0f324012629a4691f0dd9)

Bug: 258997352
Change-Id: I39f41c42d3c5aec76d4f65175e31e2e10a0825be
Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
(cherry picked from commit a8997cb1858d943fd50311023ec8f3b2c0b5346d)
This commit is contained in:
Krishna Kurapati
2022-11-14 11:18:30 +05:30
committed by Todd Kjos
parent 150b3c4e4b
commit f5cbc8d09c
1 changed files with 12 additions and 1 deletions
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13
drivers/usb/dwc3/gadget.c
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@@ -3721,13 +3721,24 @@ 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)