diff options
Diffstat (limited to 'payloads/libpayload/drivers/udc/dwc2.c')
| -rw-r--r-- | payloads/libpayload/drivers/udc/dwc2.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/payloads/libpayload/drivers/udc/dwc2.c b/payloads/libpayload/drivers/udc/dwc2.c index dc9eb7c3f5..cde3a76c06 100644 --- a/payloads/libpayload/drivers/udc/dwc2.c +++ b/payloads/libpayload/drivers/udc/dwc2.c @@ -704,9 +704,21 @@ static void dwc2_shutdown(struct usbdev_ctrl *this) is_empty = 1; this->poll(this); for (i = 0; i < 16; i++) - for (j = 0; j < 2; j++) + for (j = 0; j < 2; j++) { + /* + * EP0-OUT needs to always have an active packet + * for proper operation of control packet + * flow. Thus, ignore if only 1 packet is + * present in EP0-OUT. + */ + if ((i == 0) && (j == 0) && + SIMPLEQ_SINGLETON(&p->eps[0][0].job_queue, + queue)) + continue; + if (!SIMPLEQ_EMPTY(&p->eps[i][j].job_queue)) is_empty = 0; + } } if (timer_us(shutdown_timer_us) >= shutdown_timeout_us) |