From: Sean Young <sean@mess.org>
Date: Mon, 22 Feb 2021 08:08:35 +0000 (+0100)
Subject: media: ite-cir: check for receive overflow
X-Git-Tag: v5.12.3~217
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=2eeccff0ba79b86ca81de5185dbbf5411b068c2b;p=thirdparty%2Fkernel%2Fstable.git

media: ite-cir: check for receive overflow

[ Upstream commit 28c7afb07ccfc0a939bb06ac1e7afe669901c65a ]

It's best if this condition is reported.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/media/rc/ite-cir.c b/drivers/media/rc/ite-cir.c
index 0c6229592e132..e5c4a6941d26b 100644
--- a/drivers/media/rc/ite-cir.c
+++ b/drivers/media/rc/ite-cir.c
@@ -276,8 +276,14 @@ static irqreturn_t ite_cir_isr(int irq, void *data)
 	/* read the interrupt flags */
 	iflags = dev->params.get_irq_causes(dev);
 
+	/* Check for RX overflow */
+	if (iflags & ITE_IRQ_RX_FIFO_OVERRUN) {
+		dev_warn(&dev->rdev->dev, "receive overflow\n");
+		ir_raw_event_reset(dev->rdev);
+	}
+
 	/* check for the receive interrupt */
-	if (iflags & (ITE_IRQ_RX_FIFO | ITE_IRQ_RX_FIFO_OVERRUN)) {
+	if (iflags & ITE_IRQ_RX_FIFO) {
 		/* read the FIFO bytes */
 		rx_bytes =
 			dev->params.get_rx_bytes(dev, rx_buf,