diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2015-02-12 15:24:40 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-07 03:15:03 +0100 |
| commit | 343fda95481a7254fd81342370ba04ab255f95fe (patch) | |
| tree | 190c488e01550c5d7465502c13b7e324be151913 /drivers/tty/serial/mxs-auart.c | |
| parent | f059a455fc979e0e7f155d98bf628fccab1c5b88 (diff) | |
serial: mxs-auart: properly handle mctrl_gpio failing
If mctrl_gpio_init returns an error code this value should be forwarded and
the driver must not simply ignore this failure.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/mxs-auart.c')
| -rw-r--r-- | drivers/tty/serial/mxs-auart.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c index d1298b6cc68e..9abdccf5bfb2 100644 --- a/drivers/tty/serial/mxs-auart.c +++ b/drivers/tty/serial/mxs-auart.c @@ -1155,14 +1155,14 @@ static int serial_mxs_probe_dt(struct mxs_auart_port *s, return 0; } -static bool mxs_auart_init_gpios(struct mxs_auart_port *s, struct device *dev) +static int mxs_auart_init_gpios(struct mxs_auart_port *s, struct device *dev) { enum mctrl_gpio_idx i; struct gpio_desc *gpiod; s->gpios = mctrl_gpio_init(dev, 0); - if (IS_ERR_OR_NULL(s->gpios)) - return false; + if (IS_ERR(s->gpios)) + return PTR_ERR(s->gpios); /* Block (enabled before) DMA option if RTS or CTS is GPIO line */ if (!RTS_AT_AUART() || !CTS_AT_AUART()) { @@ -1180,7 +1180,7 @@ static bool mxs_auart_init_gpios(struct mxs_auart_port *s, struct device *dev) s->gpio_irq[i] = -EINVAL; } - return true; + return 0; } static void mxs_auart_free_gpio_irq(struct mxs_auart_port *s) @@ -1276,9 +1276,11 @@ static int mxs_auart_probe(struct platform_device *pdev) platform_set_drvdata(pdev, s); - if (!mxs_auart_init_gpios(s, &pdev->dev)) - dev_err(&pdev->dev, - "Failed to initialize GPIOs. The serial port may not work as expected\n"); + ret = mxs_auart_init_gpios(s, &pdev->dev); + if (ret) { + dev_err(&pdev->dev, "Failed to initialize GPIOs.\n"); + got out_free_irq; + } /* * Get the GPIO lines IRQ |