[PATCH 1/2] mmc/host/sdhci-of-arasan.c: Use signed formatting in error messages

[PATCH 1/2] mmc/host/sdhci-of-arasan.c: Use signed formatting in error messages

[Mike Looijmans]

"ret" is a signed int, so use "%d" in format strings instead of "%u".
This prevents cryptic codes in error messages like this:
sdhci-arasan e0101000.sdhci: platform register failed (4294966779)

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
---
 drivers/mmc/host/sdhci-of-arasan.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index 8cf81c3..7ac6718 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -161,7 +161,7 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
 	host = sdhci_pltfm_init(pdev, &sdhci_arasan_pdata, 0);
 	if (IS_ERR(host)) {
 		ret = PTR_ERR(host);
-		dev_err(&pdev->dev, "platform init failed (%u)\n", ret);
+		dev_err(&pdev->dev, "platform init failed (%d)\n", ret);
 		goto clk_disable_all;
 	}
 
@@ -172,7 +172,7 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
 
 	ret = sdhci_add_host(host);
 	if (ret) {
-		dev_err(&pdev->dev, "platform register failed (%u)\n", ret);
+		dev_err(&pdev->dev, "platform register failed (%d)\n", ret);
 		goto err_pltfm_free;
 	}
 
-- 
1.7.9.5

[PATCH 2/2] mmc/host/sdhci-of-arasan.c: Skip EPROBE_DEFER error messages

[Mike Looijmans]

When the error code is -EPROBE_DEFER, this will already be reported
so don't emit an error message in that case.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
---
 drivers/mmc/host/sdhci-of-arasan.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index 7ac6718..d5812a0 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -161,7 +161,8 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
 	host = sdhci_pltfm_init(pdev, &sdhci_arasan_pdata, 0);
 	if (IS_ERR(host)) {
 		ret = PTR_ERR(host);
-		dev_err(&pdev->dev, "platform init failed (%d)\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "platform init failed (%d)\n", ret);
 		goto clk_disable_all;
 	}
 
@@ -172,7 +173,8 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
 
 	ret = sdhci_add_host(host);
 	if (ret) {
-		dev_err(&pdev->dev, "platform register failed (%d)\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "platform register failed (%d)\n", ret);
 		goto err_pltfm_free;
 	}
 
-- 
1.7.9.5

Re: [PATCH 2/2] mmc/host/sdhci-of-arasan.c: Skip EPROBE_DEFER error messages

[Michal Simek]

Hi Chris,

On 10/23/2014 01:31 PM, Mike Looijmans wrote:
> When the error code is -EPROBE_DEFER, this will already be reported
> so don't emit an error message in that case.
> 
> Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
> ---
>  drivers/mmc/host/sdhci-of-arasan.c |    6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
> index 7ac6718..d5812a0 100644
> --- a/drivers/mmc/host/sdhci-of-arasan.c
> +++ b/drivers/mmc/host/sdhci-of-arasan.c
> @@ -161,7 +161,8 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
>  	host = sdhci_pltfm_init(pdev, &sdhci_arasan_pdata, 0);
>  	if (IS_ERR(host)) {
>  		ret = PTR_ERR(host);
> -		dev_err(&pdev->dev, "platform init failed (%d)\n", ret);
> +		if (ret != -EPROBE_DEFER)
> +			dev_err(&pdev->dev, "platform init failed (%d)\n", ret);
>  		goto clk_disable_all;
>  	}
>  
> @@ -172,7 +173,8 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
>  
>  	ret = sdhci_add_host(host);
>  	if (ret) {
> -		dev_err(&pdev->dev, "platform register failed (%d)\n", ret);
> +		if (ret != -EPROBE_DEFER)
> +			dev_err(&pdev->dev, "platform register failed (%d)\n", ret);
>  		goto err_pltfm_free;
>  	}


I checked other drivers and they are not reporting these bugs. I have briefly looked
at sdhci_add_host and sdhci_platfm_init and they are pretty good error description
+ core itself should report if driver probe failed.
That's why I think that it is just reasonable to remove these both dev_err completely.

What do you think?

Thanks,
Michal

Re: [PATCH 2/2] mmc/host/sdhci-of-arasan.c: Skip EPROBE_DEFER error messages

[Ulf Hansson]

On 23 October 2014 13:47, Michal Simek <michal.simek@xilinx.com> wrote:
> Hi Chris,
>
> On 10/23/2014 01:31 PM, Mike Looijmans wrote:
>> When the error code is -EPROBE_DEFER, this will already be reported
>> so don't emit an error message in that case.
>>
>> Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
>> ---
>>  drivers/mmc/host/sdhci-of-arasan.c |    6 ++++--
>>  1 file changed, 4 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
>> index 7ac6718..d5812a0 100644
>> --- a/drivers/mmc/host/sdhci-of-arasan.c
>> +++ b/drivers/mmc/host/sdhci-of-arasan.c
>> @@ -161,7 +161,8 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
>>       host = sdhci_pltfm_init(pdev, &sdhci_arasan_pdata, 0);
>>       if (IS_ERR(host)) {
>>               ret = PTR_ERR(host);
>> -             dev_err(&pdev->dev, "platform init failed (%d)\n", ret);
>> +             if (ret != -EPROBE_DEFER)
>> +                     dev_err(&pdev->dev, "platform init failed (%d)\n", ret);
>>               goto clk_disable_all;
>>       }
>>
>> @@ -172,7 +173,8 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
>>
>>       ret = sdhci_add_host(host);
>>       if (ret) {
>> -             dev_err(&pdev->dev, "platform register failed (%d)\n", ret);
>> +             if (ret != -EPROBE_DEFER)
>> +                     dev_err(&pdev->dev, "platform register failed (%d)\n", ret);
>>               goto err_pltfm_free;
>>       }
>
>
> I checked other drivers and they are not reporting these bugs. I have briefly looked
> at sdhci_add_host and sdhci_platfm_init and they are pretty good error description
> + core itself should report if driver probe failed.
> That's why I think that it is just reasonable to remove these both dev_err completely.
>
> What do you think?

I agree, this seems reasonable!

Kind regards
Uffe

Re: [PATCH 1/2] mmc/host/sdhci-of-arasan.c: Use signed formatting in error messages

[Ulf Hansson]

On 23 October 2014 13:31, Mike Looijmans <mike.looijmans@topic.nl> wrote:
> "ret" is a signed int, so use "%d" in format strings instead of "%u".
> This prevents cryptic codes in error messages like this:
> sdhci-arasan e0101000.sdhci: platform register failed (4294966779)
>
> Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
> Reviewed-by: Michal Simek <michal.simek@xilinx.com>

Thanks! Applied for next.

I will expect a v2 of patch2.

Kind regards
Uffe

> ---
>  drivers/mmc/host/sdhci-of-arasan.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
> index 8cf81c3..7ac6718 100644
> --- a/drivers/mmc/host/sdhci-of-arasan.c
> +++ b/drivers/mmc/host/sdhci-of-arasan.c
> @@ -161,7 +161,7 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
>         host = sdhci_pltfm_init(pdev, &sdhci_arasan_pdata, 0);
>         if (IS_ERR(host)) {
>                 ret = PTR_ERR(host);
> -               dev_err(&pdev->dev, "platform init failed (%u)\n", ret);
> +               dev_err(&pdev->dev, "platform init failed (%d)\n", ret);
>                 goto clk_disable_all;
>         }
>
> @@ -172,7 +172,7 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
>
>         ret = sdhci_add_host(host);
>         if (ret) {
> -               dev_err(&pdev->dev, "platform register failed (%u)\n", ret);
> +               dev_err(&pdev->dev, "platform register failed (%d)\n", ret);
>                 goto err_pltfm_free;
>         }
>
> --
> 1.7.9.5
>

Re: [PATCH 2/2] mmc/host/sdhci-of-arasan.c: Skip EPROBE_DEFER error messages

[Mike Looijmans]

As discussed here, I'll post a new patch which simply removes the error
messages.

[PATCH] mmc/host/sdhci-of-arasan.c: Omit superfluous error messages

[Mike Looijmans]

sdhci_add_host and sdhci_platfm_init already report failure,
so don't emit error messages when a failure occurs. This prevents
occurences of "deferred" messages when required power supplies
are not ready for operation yet.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
---
 drivers/mmc/host/sdhci-of-arasan.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index 7ac6718..75bea2e 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -161,7 +161,6 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
 	host = sdhci_pltfm_init(pdev, &sdhci_arasan_pdata, 0);
 	if (IS_ERR(host)) {
 		ret = PTR_ERR(host);
-		dev_err(&pdev->dev, "platform init failed (%d)\n", ret);
 		goto clk_disable_all;
 	}
 
@@ -171,10 +170,8 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
 	pltfm_host->clk = clk_xin;
 
 	ret = sdhci_add_host(host);
-	if (ret) {
-		dev_err(&pdev->dev, "platform register failed (%d)\n", ret);
+	if (ret)
 		goto err_pltfm_free;
-	}
 
 	return 0;
 
-- 
1.7.9.5

Re: [PATCH] mmc/host/sdhci-of-arasan.c: Omit superfluous error messages

[Ulf Hansson]

On 28 October 2014 08:53, Mike Looijmans <mike.looijmans@topic.nl> wrote:
> sdhci_add_host and sdhci_platfm_init already report failure,
> so don't emit error messages when a failure occurs. This prevents
> occurences of "deferred" messages when required power supplies
> are not ready for operation yet.
>
> Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>

Thanks! Applied for next.

Kind regards
Uffe

> ---
>  drivers/mmc/host/sdhci-of-arasan.c |    5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
> index 7ac6718..75bea2e 100644
> --- a/drivers/mmc/host/sdhci-of-arasan.c
> +++ b/drivers/mmc/host/sdhci-of-arasan.c
> @@ -161,7 +161,6 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
>         host = sdhci_pltfm_init(pdev, &sdhci_arasan_pdata, 0);
>         if (IS_ERR(host)) {
>                 ret = PTR_ERR(host);
> -               dev_err(&pdev->dev, "platform init failed (%d)\n", ret);
>                 goto clk_disable_all;
>         }
>
> @@ -171,10 +170,8 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
>         pltfm_host->clk = clk_xin;
>
>         ret = sdhci_add_host(host);
> -       if (ret) {
> -               dev_err(&pdev->dev, "platform register failed (%d)\n", ret);
> +       if (ret)
>                 goto err_pltfm_free;
> -       }
>
>         return 0;
>
> --
> 1.7.9.5
>