The patch below does not apply to the 4.9-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 7e620984b62532783912312e334f3c48cdacbd5d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@xxxxxxxxxxxxxx>
Date: Thu, 20 Sep 2018 14:11:17 +0200
Subject: [PATCH] serial: imx: restore handshaking irq for imx1
MIME-Version: 1.0
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Back in 2015 when irda was dropped from the driver imx1 was broken. This
change reintroduces the support for the third interrupt of the UART.
Fixes: afe9cbb1a6ad ("serial: imx: drop support for IRDA")
Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Reviewed-by: Leonard Crestez <leonard.crestez@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 239c0fa2e981..0f67197a3783 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -2351,6 +2351,14 @@ 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);
