[3/3] serial: sh-sci: Don't check for mctrl_gpio_to_gpiod() returning error
diff mbox series

Message ID 20190814092924.13857-4-geert+renesas@glider.be
State New
Headers show
Series
  • [1/3] serial: atmel: Don't check for mctrl_gpio_to_gpiod() returning error
Related show

Commit Message

Geert Uytterhoeven Aug. 14, 2019, 9:29 a.m. UTC
Since commit 1d267ea6539f2663 ("serial: mctrl-gpio: simplify init
routine"), mctrl_gpio_init() returns failure if the assignment to any
member of the gpio array results in an error pointer.
Since commit c359522194593815 ("serial: mctrl_gpio: Avoid probe failures
in case of missing gpiolib"), mctrl_gpio_to_gpiod() returns NULL in the
!CONFIG_GPIOLIB case.
Hence there is no longer a need to check for mctrl_gpio_to_gpiod()
returning an error value.  A simple NULL check is sufficient.

This follows the spirit of commit 445df7ff3fd1a0a9 ("serial: mctrl-gpio:
drop usages of IS_ERR_OR_NULL") in the mctrl-gpio core.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 drivers/tty/serial/sh-sci.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

Comments

Simon Horman Aug. 19, 2019, 9:51 a.m. UTC | #1
On Wed, Aug 14, 2019 at 11:29:24AM +0200, Geert Uytterhoeven wrote:
> Since commit 1d267ea6539f2663 ("serial: mctrl-gpio: simplify init
> routine"), mctrl_gpio_init() returns failure if the assignment to any
> member of the gpio array results in an error pointer.
> Since commit c359522194593815 ("serial: mctrl_gpio: Avoid probe failures
> in case of missing gpiolib"), mctrl_gpio_to_gpiod() returns NULL in the
> !CONFIG_GPIOLIB case.
> Hence there is no longer a need to check for mctrl_gpio_to_gpiod()
> returning an error value.  A simple NULL check is sufficient.
> 
> This follows the spirit of commit 445df7ff3fd1a0a9 ("serial: mctrl-gpio:
> drop usages of IS_ERR_OR_NULL") in the mctrl-gpio core.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Reviewed-by: Simon Horman <horms+renesas@verge.net.au>

> ---
>  drivers/tty/serial/sh-sci.c | 12 +++++-------
>  1 file changed, 5 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
> index 7f565fcbf1ca4c5e..4e754a4850e6db63 100644
> --- a/drivers/tty/serial/sh-sci.c
> +++ b/drivers/tty/serial/sh-sci.c
> @@ -2099,12 +2099,12 @@ static unsigned int sci_get_mctrl(struct uart_port *port)
>  	if (s->autorts) {
>  		if (sci_get_cts(port))
>  			mctrl |= TIOCM_CTS;
> -	} else if (IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(gpios, UART_GPIO_CTS))) {
> +	} else if (!mctrl_gpio_to_gpiod(gpios, UART_GPIO_CTS)) {
>  		mctrl |= TIOCM_CTS;
>  	}
> -	if (IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(gpios, UART_GPIO_DSR)))
> +	if (!mctrl_gpio_to_gpiod(gpios, UART_GPIO_DSR))
>  		mctrl |= TIOCM_DSR;
> -	if (IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(gpios, UART_GPIO_DCD)))
> +	if (!mctrl_gpio_to_gpiod(gpios, UART_GPIO_DCD))
>  		mctrl |= TIOCM_CAR;
>  
>  	return mctrl;
> @@ -3285,10 +3285,8 @@ static int sci_probe_single(struct platform_device *dev,
>  		return PTR_ERR(sciport->gpios);
>  
>  	if (sciport->has_rtscts) {
> -		if (!IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(sciport->gpios,
> -							UART_GPIO_CTS)) ||
> -		    !IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(sciport->gpios,
> -							UART_GPIO_RTS))) {
> +		if (mctrl_gpio_to_gpiod(sciport->gpios, UART_GPIO_CTS) ||
> +		    mctrl_gpio_to_gpiod(sciport->gpios, UART_GPIO_RTS)) {
>  			dev_err(&dev->dev, "Conflicting RTS/CTS config\n");
>  			return -EINVAL;
>  		}
> -- 
> 2.17.1
>

Patch
diff mbox series

diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 7f565fcbf1ca4c5e..4e754a4850e6db63 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -2099,12 +2099,12 @@  static unsigned int sci_get_mctrl(struct uart_port *port)
 	if (s->autorts) {
 		if (sci_get_cts(port))
 			mctrl |= TIOCM_CTS;
-	} else if (IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(gpios, UART_GPIO_CTS))) {
+	} else if (!mctrl_gpio_to_gpiod(gpios, UART_GPIO_CTS)) {
 		mctrl |= TIOCM_CTS;
 	}
-	if (IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(gpios, UART_GPIO_DSR)))
+	if (!mctrl_gpio_to_gpiod(gpios, UART_GPIO_DSR))
 		mctrl |= TIOCM_DSR;
-	if (IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(gpios, UART_GPIO_DCD)))
+	if (!mctrl_gpio_to_gpiod(gpios, UART_GPIO_DCD))
 		mctrl |= TIOCM_CAR;
 
 	return mctrl;
@@ -3285,10 +3285,8 @@  static int sci_probe_single(struct platform_device *dev,
 		return PTR_ERR(sciport->gpios);
 
 	if (sciport->has_rtscts) {
-		if (!IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(sciport->gpios,
-							UART_GPIO_CTS)) ||
-		    !IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(sciport->gpios,
-							UART_GPIO_RTS))) {
+		if (mctrl_gpio_to_gpiod(sciport->gpios, UART_GPIO_CTS) ||
+		    mctrl_gpio_to_gpiod(sciport->gpios, UART_GPIO_RTS)) {
 			dev_err(&dev->dev, "Conflicting RTS/CTS config\n");
 			return -EINVAL;
 		}