* [PATCH -next] backlight: gpio_backlight: Switch to use dev_err_probe() helper
@ 2022-09-26 13:38 Yang Yingliang
2022-09-26 13:46 ` Daniel Thompson
0 siblings, 1 reply; 3+ messages in thread
From: Yang Yingliang @ 2022-09-26 13:38 UTC (permalink / raw)
To: linux-fbdev, dri-devel; +Cc: lee, daniel.thompson, jingoohan1, yangyingliang
In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs. It's more simple in error path.
---
drivers/video/backlight/gpio_backlight.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
index 6f78d928f054..4ff3939e5f7e 100644
--- a/drivers/video/backlight/gpio_backlight.c
+++ b/drivers/video/backlight/gpio_backlight.c
@@ -64,13 +64,9 @@ static int gpio_backlight_probe(struct platform_device *pdev)
def_value = device_property_read_bool(dev, "default-on");
gbl->gpiod = devm_gpiod_get(dev, NULL, GPIOD_ASIS);
- if (IS_ERR(gbl->gpiod)) {
- ret = PTR_ERR(gbl->gpiod);
- if (ret != -EPROBE_DEFER)
- dev_err(dev,
- "Error: The gpios parameter is missing or invalid.\n");
- return ret;
- }
+ if (IS_ERR(gbl->gpiod))
+ return dev_err_probe(dev, PTR_ERR(gbl->gpiod),
+ "Error: The gpios parameter is missing or invalid.\n");
memset(&props, 0, sizeof(props));
props.type = BACKLIGHT_RAW;
--
2.25.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH -next] backlight: gpio_backlight: Switch to use dev_err_probe() helper
2022-09-26 13:38 [PATCH -next] backlight: gpio_backlight: Switch to use dev_err_probe() helper Yang Yingliang
@ 2022-09-26 13:46 ` Daniel Thompson
2022-09-26 14:16 ` Yang Yingliang
0 siblings, 1 reply; 3+ messages in thread
From: Daniel Thompson @ 2022-09-26 13:46 UTC (permalink / raw)
To: Yang Yingliang; +Cc: linux-fbdev, dri-devel, lee, jingoohan1
On Mon, Sep 26, 2022 at 09:38:19PM +0800, Yang Yingliang wrote:
> In the probe path, dev_err() can be replaced with dev_err_probe()
> which will check if error code is -EPROBE_DEFER and prints the
> error name. It also sets the defer probe reason which can be
> checked later through debugfs. It's more simple in error path.
Needs an SoB.
> ---
> drivers/video/backlight/gpio_backlight.c | 10 +++-------
> 1 file changed, 3 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
> index 6f78d928f054..4ff3939e5f7e 100644
> --- a/drivers/video/backlight/gpio_backlight.c
> +++ b/drivers/video/backlight/gpio_backlight.c
> @@ -64,13 +64,9 @@ static int gpio_backlight_probe(struct platform_device *pdev)
> def_value = device_property_read_bool(dev, "default-on");
>
> gbl->gpiod = devm_gpiod_get(dev, NULL, GPIOD_ASIS);
> - if (IS_ERR(gbl->gpiod)) {
> - ret = PTR_ERR(gbl->gpiod);
> - if (ret != -EPROBE_DEFER)
> - dev_err(dev,
> - "Error: The gpios parameter is missing or invalid.\n");
> - return ret;
> - }
> + if (IS_ERR(gbl->gpiod))
> + return dev_err_probe(dev, PTR_ERR(gbl->gpiod),
> + "Error: The gpios parameter is missing or invalid.\n");
Remove the "Error: The " from the beginning of the string:
dev_err_probe() adds an error tag and the resulting line will read
better with a "The " at the beginning.
Daniel.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH -next] backlight: gpio_backlight: Switch to use dev_err_probe() helper
2022-09-26 13:46 ` Daniel Thompson
@ 2022-09-26 14:16 ` Yang Yingliang
0 siblings, 0 replies; 3+ messages in thread
From: Yang Yingliang @ 2022-09-26 14:16 UTC (permalink / raw)
To: Daniel Thompson; +Cc: linux-fbdev, dri-devel, lee, jingoohan1, yangyingliang
On 2022/9/26 21:46, Daniel Thompson wrote:
> On Mon, Sep 26, 2022 at 09:38:19PM +0800, Yang Yingliang wrote:
>> In the probe path, dev_err() can be replaced with dev_err_probe()
>> which will check if error code is -EPROBE_DEFER and prints the
>> error name. It also sets the defer probe reason which can be
>> checked later through debugfs. It's more simple in error path.
> Needs an SoB.
>
>
>> ---
>> drivers/video/backlight/gpio_backlight.c | 10 +++-------
>> 1 file changed, 3 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
>> index 6f78d928f054..4ff3939e5f7e 100644
>> --- a/drivers/video/backlight/gpio_backlight.c
>> +++ b/drivers/video/backlight/gpio_backlight.c
>> @@ -64,13 +64,9 @@ static int gpio_backlight_probe(struct platform_device *pdev)
>> def_value = device_property_read_bool(dev, "default-on");
>>
>> gbl->gpiod = devm_gpiod_get(dev, NULL, GPIOD_ASIS);
>> - if (IS_ERR(gbl->gpiod)) {
>> - ret = PTR_ERR(gbl->gpiod);
>> - if (ret != -EPROBE_DEFER)
>> - dev_err(dev,
>> - "Error: The gpios parameter is missing or invalid.\n");
>> - return ret;
>> - }
>> + if (IS_ERR(gbl->gpiod))
>> + return dev_err_probe(dev, PTR_ERR(gbl->gpiod),
>> + "Error: The gpios parameter is missing or invalid.\n");
> Remove the "Error: The " from the beginning of the string:
> dev_err_probe() adds an error tag and the resulting line will read
> better with a "The " at the beginning.
OK.
Thanks,
Yang
>
>
> Daniel.
> .
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-09-26 15:31 UTC | newest]
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