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

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[ Upstream commit 548f48b66c ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Xu Yang
2024-12-14 19:48:31 +01:00
committed by Greg Kroah-Hartman
parent 5ac1dd51aa
commit 19bc36c8d4
1 changed files with 1 additions and 1 deletions
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drivers/usb/chipidea/udc.c
+1 -1
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@@ -2024,7 +2024,7 @@ 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)) {