2020-10-31 03:09:49

by Yue Haibing

Subject: [PATCH] serial: mctrl_gpio: Fix passing zero to 'ERR_PTR' warning

drivers/tty/serial/serial_mctrl_gpio.c:214
mctrl_gpio_init() warn: passing zero to 'ERR_PTR'

gpiod_to_irq() never return 0, so remove the useless test
and make code more clear.

Signed-off-by: YueHaibing <[email protected]>
---
drivers/tty/serial/serial_mctrl_gpio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/serial_mctrl_gpio.c b/drivers/tty/serial/serial_mctrl_gpio.c
index fb4781292d40..c41d8911ce95 100644
--- a/drivers/tty/serial/serial_mctrl_gpio.c
+++ b/drivers/tty/serial/serial_mctrl_gpio.c
@@ -207,7 +207,7 @@ struct mctrl_gpios *mctrl_gpio_init(struct uart_port *port, unsigned int idx)
continue;

ret = gpiod_to_irq(gpios->gpio[i]);
- if (ret <= 0) {
+ if (ret < 0) {
dev_err(port->dev,
"failed to find corresponding irq for %s (idx=%d, err=%d)\n",
mctrl_gpios_desc[i].name, idx, ret);
--
2.17.1

2020-11-02 08:22:58

by Jiri Slaby

Subject: Re: [PATCH] serial: mctrl_gpio: Fix passing zero to 'ERR_PTR' warning

On 31. 10. 20, 4:05, YueHaibing wrote:
> drivers/tty/serial/serial_mctrl_gpio.c:214
> mctrl_gpio_init() warn: passing zero to 'ERR_PTR'
>
> gpiod_to_irq() never return 0, so remove the useless test
> and make code more clear.
>
> Signed-off-by: YueHaibing <[email protected]>

Reviewed-by: Jiri Slaby <[email protected]>

> ---
> drivers/tty/serial/serial_mctrl_gpio.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/tty/serial/serial_mctrl_gpio.c b/drivers/tty/serial/serial_mctrl_gpio.c
> index fb4781292d40..c41d8911ce95 100644
> --- a/drivers/tty/serial/serial_mctrl_gpio.c
> +++ b/drivers/tty/serial/serial_mctrl_gpio.c
> @@ -207,7 +207,7 @@ struct mctrl_gpios *mctrl_gpio_init(struct uart_port *port, unsigned int idx)
> continue;
>
> ret = gpiod_to_irq(gpios->gpio[i]);
> - if (ret <= 0) {
> + if (ret < 0) {
> dev_err(port->dev,
> "failed to find corresponding irq for %s (idx=%d, err=%d)\n",
> mctrl_gpios_desc[i].name, idx, ret);
>


--
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