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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2015-02-12 15:24:38 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-07 03:15:03 +0100 |
| commit | 722ccf416ac2804cdb9b5c84e81524fab775a577 (patch) | |
| tree | 42c8497180440a599697cd6b41327ecb4f815b30 | |
| parent | c89b73703ea3e61ab233560d2c6c4fc0963111dc (diff) | |
| download | linux-722ccf416ac2804cdb9b5c84e81524fab775a577.tar.gz linux-722ccf416ac2804cdb9b5c84e81524fab775a577.tar.bz2 linux-722ccf416ac2804cdb9b5c84e81524fab775a577.zip | |
serial: atmel: fix error handling when mctrl_gpio_init fails
mctrl_gpio_init at present doesn't return NULL. (It might be used in the
future when no gpios are to be used indicating success.) Properly pass
error returned and also make driver probing fail on error.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/atmel_serial.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index 846552bff67d..4031dc367d3b 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -2542,8 +2542,8 @@ static int atmel_init_gpios(struct atmel_uart_port *p, struct device *dev) struct gpio_desc *gpiod; p->gpios = mctrl_gpio_init(dev, 0); - if (IS_ERR_OR_NULL(p->gpios)) - return -1; + if (IS_ERR(p->gpios)) + return PTR_ERR(p->gpios); for (i = 0; i < UART_GPIO_MAX; i++) { gpiod = mctrl_gpio_to_gpiod(p->gpios, i); @@ -2594,9 +2594,10 @@ static int atmel_serial_probe(struct platform_device *pdev) port->uart.line = ret; ret = atmel_init_gpios(port, &pdev->dev); - if (ret < 0) - dev_err(&pdev->dev, "%s", - "Failed to initialize GPIOs. The serial port may not work as expected"); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to initialize GPIOs."); + goto err; + } ret = atmel_init_port(port, pdev); if (ret) |