| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 010/207] media: ite-cir: IR receiver stop working after receive overflow | Date | Wed, 24 Nov 2021 12:54:41 +0100 |
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From: Sean Young <sean@mess.org>
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> --- 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 @@ -299,7 +299,7 @@ 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,
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