This is a note to let you know that I've just added the patch titled
usb: chipidea: udc: handle USB Error Interrupt if IOC not set
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-chipidea-udc-handle-usb-error-interrupt-if-ioc-n.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 065f3491f3e082714a62194a29b05a1076865a1d
Author: Xu Yang <xu.yang_2@xxxxxxx>
Date: Thu Sep 26 10:29:04 2024 +0800
usb: chipidea: udc: handle USB Error Interrupt if IOC not set
[ Upstream commit 548f48b66c0c5d4b9795a55f304b7298cde2a025 ]
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@xxxxxxxxxx>
Signed-off-by: Xu Yang <xu.yang_2@xxxxxxx>
Link: https://lore.kernel.org/r/20240926022906.473319-1-xu.yang_2@xxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 5cdf03534c0c7..1c7af91bf03af 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -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)) {
