media: ite-cir: IR receiver stop working after receive overflow

commit fdc881783099c6343921ff017450831c8766d12a upstream.

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/media/rc/ite-cir.c b/drivers/media/rc/ite-cir.c
index e5c4a6941d26b8bee703c13de783cd8e7f41a923..fbe794ca1eef16468693c71f2a25ab7e7a42a3a1 100644 (file)
--- a/drivers/media/rc/ite-cir.c
+++ b/drivers/media/rc/ite-cir.c
@@ -283,7 +283,7 @@ static irqreturn_t ite_cir_isr(int irq, void *data)
        }
 
        /* 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,