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Subject[PATCH 4.18 136/228] serial: imx: restore handshaking irq for imx1
Date
4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

commit 7e620984b62532783912312e334f3c48cdacbd5d upstream.

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@vger.kernel.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/tty/serial/imx.c | 8 ++++++++
1 file changed, 8 insertions(+)

--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -2350,6 +2350,14 @@ static int imx_uart_probe(struct platfor
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);

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