[PATCH] bus: sun50i-de2: Adjust printing error message

[PATCH] bus: sun50i-de2: Adjust printing error message

[Jernej Skrabec]

SRAM driver often returns -EPROBE_DEFER and thus this bus driver often
prints error message, even if it probes successfully later. This is
confusing for users and they often think that something is wrong.

Use dev_err_probe() helper for printing error message. It handles
-EPROBE_DEFER automatically.

Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
---
 drivers/bus/sun50i-de2.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/bus/sun50i-de2.c b/drivers/bus/sun50i-de2.c
index 672518741f86..414f29cdedf0 100644
--- a/drivers/bus/sun50i-de2.c
+++ b/drivers/bus/sun50i-de2.c
@@ -15,10 +15,9 @@ static int sun50i_de2_bus_probe(struct platform_device *pdev)
 	int ret;
 
 	ret = sunxi_sram_claim(&pdev->dev);
-	if (ret) {
-		dev_err(&pdev->dev, "Error couldn't map SRAM to device\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret,
+				     "Couldn't map SRAM to device\n");
 
 	of_platform_populate(np, NULL, NULL, &pdev->dev);
 
-- 
2.33.0

Re: [PATCH] bus: sun50i-de2: Adjust printing error message

[Andre Przywara]

On Sun, 10 Oct 2021 09:18:12 +0200
Jernej Skrabec <jernej.skrabec@gmail.com> wrote:

> SRAM driver often returns -EPROBE_DEFER and thus this bus driver often
> prints error message, even if it probes successfully later. This is
> confusing for users and they often think that something is wrong.
> 
> Use dev_err_probe() helper for printing error message. It handles
> -EPROBE_DEFER automatically.

Ah, many thanks for just fixing this, it was indeed confusing people.
And thanks for pointing to this useful helper!

Would this actually be a candidate for stable?

> Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>

Reviewed-by: Andre Przywara <andre.przywara@arm.com>

Cheers,
Andre

> ---
>  drivers/bus/sun50i-de2.c | 7 +++----
>  1 file changed, 3 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/bus/sun50i-de2.c b/drivers/bus/sun50i-de2.c
> index 672518741f86..414f29cdedf0 100644
> --- a/drivers/bus/sun50i-de2.c
> +++ b/drivers/bus/sun50i-de2.c
> @@ -15,10 +15,9 @@ static int sun50i_de2_bus_probe(struct platform_device *pdev)
>  	int ret;
>  
>  	ret = sunxi_sram_claim(&pdev->dev);
> -	if (ret) {
> -		dev_err(&pdev->dev, "Error couldn't map SRAM to device\n");
> -		return ret;
> -	}
> +	if (ret)
> +		return dev_err_probe(&pdev->dev, ret,
> +				     "Couldn't map SRAM to device\n");
>  
>  	of_platform_populate(np, NULL, NULL, &pdev->dev);
>  

Re: (subset) [PATCH] bus: sun50i-de2: Adjust printing error message

[Maxime Ripard]

On Sun, 10 Oct 2021 09:18:12 +0200, Jernej Skrabec wrote:
> SRAM driver often returns -EPROBE_DEFER and thus this bus driver often
> prints error message, even if it probes successfully later. This is
> confusing for users and they often think that something is wrong.
> 
> Use dev_err_probe() helper for printing error message. It handles
> -EPROBE_DEFER automatically.
> 
> [...]

Applied to local tree (sunxi/drivers-for-5.16).

Thanks!
Maxime