On Thu, Sep 20, 2018 at 01:58:45AM +0000, YueHaibing wrote:
> Fixes gcc '-Wunused-but-set-variable' warning:
>
> drivers/tty/serial/imx.c: In function 'imx_uart_probe':
> drivers/tty/serial/imx.c:2198:20: warning:
> variable 'rtsirq' set but not used [-Wunused-but-set-variable]
>
> Signed-off-by: YueHaibing <yuehaib...@huawei.com>
Wow, this variable is write-only since
afe9cbb1a6ad ("serial: imx: drop support for IRDA")
which is over three years old. The last hunk of this patch is wrong
however, which means that nobody uses handshaking on imx1 with a kernel
newer than 4.1-rc1. (Well, or they fixed it and didn't made the effort
to tell.)
I suggest to break rx and tx on imx1, too, and if nobody reports a
regression within the next three years, we rip out imx1 support
completely. :-)
Otherwise we need:
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 4e853570ea80..554a69db1bca 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -2350,6 +2350,14 @@ static int imx_uart_probe(struct platform_device *pdev)
ret);
return ret;
}
+
+ ret = devm_request_irq(&pdev->dev, rtsirq, imx_uart_rtsint, 0,
+ dev_name(&pdev->dev), sport);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request rts irq: %d\n",
+ ret);
+ return ret;
+ }
} else {
ret = devm_request_irq(&pdev->dev, rxirq, imx_uart_int, 0,
dev_name(&pdev->dev), sport);
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
