[PATCH 2/4] tty/serial: atmel: remove uneeded IS_ERR_OR_NULL calls

[Richard Genoud]

Since commit 1d267ea6539f ("serial: mctrl-gpio: simplify init routine"),
the mctrl_gpio_to_gpiod() function can't return an error anymore.
So, just testing for a NULL pointer is ok.

Signed-off-by: Richard Genoud <richard.gen...@gmail.com>
---
 drivers/tty/serial/atmel_serial.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/tty/serial/atmel_serial.c 
b/drivers/tty/serial/atmel_serial.c
index ad6c2bdea481..e0f1955b3c7e 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -315,32 +315,28 @@ static unsigned int atmel_get_lines_status(struct 
uart_port *port)
 
        mctrl_gpio_get(atmel_port->gpios, &ret);
 
-       if (!IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(atmel_port->gpios,
-                                               UART_GPIO_CTS))) {
+       if (mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_CTS)) {
                if (ret & TIOCM_CTS)
                        status &= ~ATMEL_US_CTS;
                else
                        status |= ATMEL_US_CTS;
        }
 
-       if (!IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(atmel_port->gpios,
-                                               UART_GPIO_DSR))) {
+       if (mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_DSR)) {
                if (ret & TIOCM_DSR)
                        status &= ~ATMEL_US_DSR;
                else
                        status |= ATMEL_US_DSR;
        }
 
-       if (!IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(atmel_port->gpios,
-                                               UART_GPIO_RI))) {
+       if (mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_RI)) {
                if (ret & TIOCM_RI)
                        status &= ~ATMEL_US_RI;
                else
                        status |= ATMEL_US_RI;
        }
 
-       if (!IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(atmel_port->gpios,
-                                               UART_GPIO_DCD))) {
+       if (mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_DCD)) {
                if (ret & TIOCM_CD)
                        status &= ~ATMEL_US_DCD;
                else