usb: chipidea: udc: handle USB Error Interrupt if IOC not set

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.

UI is set only when IOC set. Add checking UEI to fix miss call
isr_tr_complete_handler() when IOC have not set and transfer error happen.

Acked-by: Peter Chen <peter.chen@kernel.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://lore.kernel.org/r/20240926022906.473319-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index f0fcaf2b1f334f64cbada0c1bc25fc95aad46dfb..fd6032874bf33aab5334576f6f2e55136d58629e 100644 (file)
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -2217,7 +2217,7 @@ 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)) {