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    Subject[PATCH 4.14 011/251] media: ite-cir: IR receiver stop working after receive overflow
    Date
    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
    @@ -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,

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