2020-11-04 09:25:31

by Jon Hunter

Subject: [PATCH V2] drm/tegra: sor: Don't warn on probe deferral

Deferred probe is an expected return value for tegra_output_probe().
Given that the driver deals with it properly, there's no need to output
a warning that may potentially confuse users.

Signed-off-by: Jon Hunter <[email protected]>
---

Changes since V1:
- This time, I actually validated it!

drivers/gpu/drm/tegra/sor.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index e88a17c2937f..898a80ca37fa 100644
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -3764,10 +3764,9 @@ static int tegra_sor_probe(struct platform_device *pdev)
return err;

err = tegra_output_probe(&sor->output);
- if (err < 0) {
- dev_err(&pdev->dev, "failed to probe output: %d\n", err);
- return err;
- }
+ if (err < 0)
+ return dev_err_probe(&pdev->dev, err,
+ "failed to probe output: %d\n", err);

if (sor->ops && sor->ops->probe) {
err = sor->ops->probe(sor);
--
2.25.1

2020-11-04 10:54:17

by Dmitry Osipenko

Subject: Re: [PATCH V2] drm/tegra: sor: Don't warn on probe deferral

04.11.2020 12:23, Jon Hunter пишет:
> Deferred probe is an expected return value for tegra_output_probe().
> Given that the driver deals with it properly, there's no need to output
> a warning that may potentially confuse users.
>
> Signed-off-by: Jon Hunter <[email protected]>
> ---
>
> Changes since V1:
> - This time, I actually validated it!
>
> drivers/gpu/drm/tegra/sor.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
> index e88a17c2937f..898a80ca37fa 100644
> --- a/drivers/gpu/drm/tegra/sor.c
> +++ b/drivers/gpu/drm/tegra/sor.c
> @@ -3764,10 +3764,9 @@ static int tegra_sor_probe(struct platform_device *pdev)
> return err;
>
> err = tegra_output_probe(&sor->output);
> - if (err < 0) {
> - dev_err(&pdev->dev, "failed to probe output: %d\n", err);
> - return err;
> - }
> + if (err < 0)
> + return dev_err_probe(&pdev->dev, err,
> + "failed to probe output: %d\n", err);

Hello Jon,

There is no need to duplicate the error code in the message [1]. Perhaps
worth making a v3? :)

[1]
https://elixir.bootlin.com/linux/v5.10-rc2/source/drivers/base/core.c#L4240

2020-11-04 20:40:38

by Jon Hunter

Subject: Re: [PATCH V2] drm/tegra: sor: Don't warn on probe deferral

On 04/11/2020 10:49, Dmitry Osipenko wrote:
> 04.11.2020 12:23, Jon Hunter пишет:
>> Deferred probe is an expected return value for tegra_output_probe().
>> Given that the driver deals with it properly, there's no need to output
>> a warning that may potentially confuse users.
>>
>> Signed-off-by: Jon Hunter <[email protected]>
>> ---
>>
>> Changes since V1:
>> - This time, I actually validated it!
>>
>> drivers/gpu/drm/tegra/sor.c | 7 +++----
>> 1 file changed, 3 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
>> index e88a17c2937f..898a80ca37fa 100644
>> --- a/drivers/gpu/drm/tegra/sor.c
>> +++ b/drivers/gpu/drm/tegra/sor.c
>> @@ -3764,10 +3764,9 @@ static int tegra_sor_probe(struct platform_device *pdev)
>> return err;
>>
>> err = tegra_output_probe(&sor->output);
>> - if (err < 0) {
>> - dev_err(&pdev->dev, "failed to probe output: %d\n", err);
>> - return err;
>> - }
>> + if (err < 0)
>> + return dev_err_probe(&pdev->dev, err,
>> + "failed to probe output: %d\n", err);
>
> Hello Jon,
>
> There is no need to duplicate the error code in the message [1]. Perhaps
> worth making a v3? :)
Indeed! Thanks for catching. Trying to do to many things at the same
time. I should have learned by now!

Jon

--
nvpublic