* [PATCH -next] backlight: ktd253: Switch to use dev_err_probe() helper
@ 2022-09-26 13:35 Yang Yingliang
2022-09-26 13:43 ` Daniel Thompson
0 siblings, 1 reply; 2+ messages in thread
From: Yang Yingliang @ 2022-09-26 13:35 UTC (permalink / raw)
To: linux-fbdev, dri-devel; +Cc: lee, daniel.thompson, 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/ktd253-backlight.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/video/backlight/ktd253-backlight.c b/drivers/video/backlight/ktd253-backlight.c
index 37aa5a669530..d7d43454f64a 100644
--- a/drivers/video/backlight/ktd253-backlight.c
+++ b/drivers/video/backlight/ktd253-backlight.c
@@ -173,12 +173,9 @@ static int ktd253_backlight_probe(struct platform_device *pdev)
}
ktd253->gpiod = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
- if (IS_ERR(ktd253->gpiod)) {
- ret = PTR_ERR(ktd253->gpiod);
- if (ret != -EPROBE_DEFER)
- dev_err(dev, "gpio line missing or invalid.\n");
- return ret;
- }
+ if (IS_ERR(ktd253->gpiod))
+ return dev_err_probe(dev, PTR_ERR(ktd253->gpiod),
+ "gpio line missing or invalid.\n");
gpiod_set_consumer_name(ktd253->gpiod, dev_name(dev));
/* Bring backlight to a known off state */
msleep(KTD253_T_OFF_MS);
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH -next] backlight: ktd253: Switch to use dev_err_probe() helper
2022-09-26 13:35 [PATCH -next] backlight: ktd253: Switch to use dev_err_probe() helper Yang Yingliang
@ 2022-09-26 13:43 ` Daniel Thompson
0 siblings, 0 replies; 2+ messages in thread
From: Daniel Thompson @ 2022-09-26 13:43 UTC (permalink / raw)
To: Yang Yingliang; +Cc: linux-fbdev, lee, dri-devel
On Mon, Sep 26, 2022 at 09:35:25PM +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.
Please add a SoB and resend.
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Daniel.
^ permalink raw reply [flat|nested] 2+ messages in thread
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