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- From 1f9195cda30b320038cf94b4d14f85e58dd69d6d Mon Sep 17 00:00:00 2001
- From: Phil Elwell <[email protected]>
- Date: Tue, 6 Nov 2018 12:57:48 +0000
- Subject: [PATCH] sc16is7xx: Don't spin if no data received
- See: https://github.com/raspberrypi/linux/issues/2676
- Signed-off-by: Phil Elwell <[email protected]>
- ---
- drivers/tty/serial/sc16is7xx.c | 2 ++
- 1 file changed, 2 insertions(+)
- --- a/drivers/tty/serial/sc16is7xx.c
- +++ b/drivers/tty/serial/sc16is7xx.c
- @@ -770,6 +770,8 @@ static bool sc16is7xx_port_irq(struct sc
- rxlen = sc16is7xx_port_read(port, SC16IS7XX_RXLVL_REG);
- if (rxlen)
- sc16is7xx_handle_rx(port, rxlen, iir);
- + else
- + return false;
- break;
- /* CTSRTS interrupt comes only when CTS goes inactive */
- case SC16IS7XX_IIR_CTSRTS_SRC:
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