From fdc881783099c6343921ff017450831c8766d12a Mon Sep 17 00:00:00 2001
From: Sean Young <sean@mess.org>
Date: Sun, 17 Oct 2021 13:01:15 +0100
Subject: [PATCH] media: ite-cir: IR receiver stop working after receive
 overflow
Git-commit: fdc881783099c6343921ff017450831c8766d12a
References: git-fixes
Patch-mainline: v5.16-rc1

On an Intel NUC6iSYK, no IR is reported after a receive overflow.

When a receiver overflow occurs, this condition is only cleared by
reading the fifo. Make sure we read anything in the fifo.

Fixes: 28c7afb07ccf ("media: ite-cir: check for receive overflow")
Suggested-by: Bryan Pass <bryan.pass@gmail.com>
Tested-by: Bryan Pass <bryan.pass@gmail.com>
Cc: stable@vger.kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
 drivers/media/rc/ite-cir.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/media/rc/ite-cir.c
+++ b/drivers/media/rc/ite-cir.c
@@ -292,7 +292,7 @@ static irqreturn_t ite_cir_isr(int irq,
 	}
 
 	/* check for the receive interrupt */
-	if (iflags & ITE_IRQ_RX_FIFO) {
+	if (iflags & (ITE_IRQ_RX_FIFO | ITE_IRQ_RX_FIFO_OVERRUN)) {
 		/* read the FIFO bytes */
 		rx_bytes =
 			dev->params.get_rx_bytes(dev, rx_buf,