[PATCH 1/3] usb: chipidea: udc: handle USB Error Interrupt if IOC not set

[Xu Yang <xu.yang_2@nxp.com>]

As per USBSTS register description about UEI:

  When completion of a USB transaction results in an error condition, this
  bit is set by the Host/Device Controller. This bit is set along with the
  USBINT bit, if the TD on which the error interrupt occurred also had its
  interrupt on complete (IOC) bit set.

Currently, device controller will do nothing when endpoints met transfer
error if IOC didn't set on that error dTD since UI didn't assert too. This
will also handle UEI event as same as USBSTS.UI for such cases.

Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
---
 drivers/usb/chipidea/udc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 69ef3cd8d4f8..b9ccf62e0a50 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -2063,7 +2063,7 @@ static irqreturn_t udc_irq(struct ci_hdrc *ci)
 			}
 		}
 
-		if (USBi_UI  & intr)
+		if ((USBi_UI | USBi_UEI) & intr)
 			isr_tr_complete_handler(ci);
 
 		if ((USBi_SLI & intr) && !(ci->suspended)) {
-- 
2.34.1