diff mbox

[v6,1/7] drm/stm: ltdc: Fix leak of px clk enable in some error paths

Message ID 1500277223-29553-2-git-send-email-philippe.cornu@st.com (mailing list archive)
State New, archived
Headers show

Commit Message

Philippe CORNU July 17, 2017, 7:40 a.m. UTC
The pixel clock gets enabled early during init, since it's required
in order to read registers. This pixel clock must be disabled if
errors during this init phase.

Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
---
 drivers/gpu/drm/stm/ltdc.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

Comments

Archit Taneja July 29, 2017, 2:32 p.m. UTC | #1
Hi Philippe,

On 07/17/2017 01:10 PM, Philippe CORNU wrote:
> The pixel clock gets enabled early during init, since it's required
> in order to read registers. This pixel clock must be disabled if
> errors during this init phase.
> 

This patch was pulled in to drm-misc-next, but it lacks your Sign-off.
It looks like the Ack and the Sign-off got accidentally mixed up

Can you please reply to this mail with your "Signed-off-by" so that
we have proof of it on dri-devel?

Thanks,
Archit

> Signed-off-by: Eric Anholt <eric@anholt.net>
> Acked-by: Philippe Cornu <philippe.cornu@st.com>
> ---
>   drivers/gpu/drm/stm/ltdc.c | 10 ++++++----
>   1 file changed, 6 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
> index 5331760..7f64d5a 100644
> --- a/drivers/gpu/drm/stm/ltdc.c
> +++ b/drivers/gpu/drm/stm/ltdc.c
> @@ -1045,13 +1045,15 @@ int ltdc_load(struct drm_device *ddev)
>   
>   	if (of_address_to_resource(np, 0, &res)) {
>   		DRM_ERROR("Unable to get resource\n");
> -		return -ENODEV;
> +		ret = -ENODEV;
> +		goto err;
>   	}
>   
>   	ldev->regs = devm_ioremap_resource(dev, &res);
>   	if (IS_ERR(ldev->regs)) {
>   		DRM_ERROR("Unable to get ltdc registers\n");
> -		return PTR_ERR(ldev->regs);
> +		ret = PTR_ERR(ldev->regs);
> +		goto err;
>   	}
>   
>   	for (i = 0; i < MAX_IRQ; i++) {
> @@ -1064,7 +1066,7 @@ int ltdc_load(struct drm_device *ddev)
>   						dev_name(dev), ddev);
>   		if (ret) {
>   			DRM_ERROR("Failed to register LTDC interrupt\n");
> -			return ret;
> +			goto err;
>   		}
>   	}
>   
> @@ -1079,7 +1081,7 @@ int ltdc_load(struct drm_device *ddev)
>   	if (ret) {
>   		DRM_ERROR("hardware identifier (0x%08x) not supported!\n",
>   			  ldev->caps.hw_version);
> -		return ret;
> +		goto err;
>   	}
>   
>   	DRM_INFO("ltdc hw version 0x%08x - ready\n", ldev->caps.hw_version);
>
Philippe CORNU July 30, 2017, 9:10 a.m. UTC | #2
On 07/29/2017 04:32 PM, Archit Taneja wrote:
> Hi Philippe,

> 

> On 07/17/2017 01:10 PM, Philippe CORNU wrote:

>> The pixel clock gets enabled early during init, since it's required

>> in order to read registers. This pixel clock must be disabled if

>> errors during this init phase.

>>

> 

> This patch was pulled in to drm-misc-next, but it lacks your Sign-off.

> It looks like the Ack and the Sign-off got accidentally mixed up

> 


Hi Archit,
This patch is from Eric that is why I put his "signed-off-by" and I 
"acked" it to confirm that the patch is fine to me :-)

Nevertheless, as I am the patch "author" in the git tree, I confirm with 
my my below signed-off-by:

Signed-off-by: Philippe Cornu <philippe.cornu@st.com>


Many thanks
Philippe :-)

> Can you please reply to this mail with your "Signed-off-by" so that

> we have proof of it on dri-devel?

> 

> Thanks,

> Archit

> 

>> Signed-off-by: Eric Anholt <eric@anholt.net>

>> Acked-by: Philippe Cornu <philippe.cornu@st.com>

>> ---

>>   drivers/gpu/drm/stm/ltdc.c | 10 ++++++----

>>   1 file changed, 6 insertions(+), 4 deletions(-)

>>

>> diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c

>> index 5331760..7f64d5a 100644

>> --- a/drivers/gpu/drm/stm/ltdc.c

>> +++ b/drivers/gpu/drm/stm/ltdc.c

>> @@ -1045,13 +1045,15 @@ int ltdc_load(struct drm_device *ddev)

>>       if (of_address_to_resource(np, 0, &res)) {

>>           DRM_ERROR("Unable to get resource\n");

>> -        return -ENODEV;

>> +        ret = -ENODEV;

>> +        goto err;

>>       }

>>       ldev->regs = devm_ioremap_resource(dev, &res);

>>       if (IS_ERR(ldev->regs)) {

>>           DRM_ERROR("Unable to get ltdc registers\n");

>> -        return PTR_ERR(ldev->regs);

>> +        ret = PTR_ERR(ldev->regs);

>> +        goto err;

>>       }

>>       for (i = 0; i < MAX_IRQ; i++) {

>> @@ -1064,7 +1066,7 @@ int ltdc_load(struct drm_device *ddev)

>>                           dev_name(dev), ddev);

>>           if (ret) {

>>               DRM_ERROR("Failed to register LTDC interrupt\n");

>> -            return ret;

>> +            goto err;

>>           }

>>       }

>> @@ -1079,7 +1081,7 @@ int ltdc_load(struct drm_device *ddev)

>>       if (ret) {

>>           DRM_ERROR("hardware identifier (0x%08x) not supported!\n",

>>                 ldev->caps.hw_version);

>> -        return ret;

>> +        goto err;

>>       }

>>       DRM_INFO("ltdc hw version 0x%08x - ready\n", 

>> ldev->caps.hw_version);

>>

>
diff mbox

Patch

diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
index 5331760..7f64d5a 100644
--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -1045,13 +1045,15 @@  int ltdc_load(struct drm_device *ddev)
 
 	if (of_address_to_resource(np, 0, &res)) {
 		DRM_ERROR("Unable to get resource\n");
-		return -ENODEV;
+		ret = -ENODEV;
+		goto err;
 	}
 
 	ldev->regs = devm_ioremap_resource(dev, &res);
 	if (IS_ERR(ldev->regs)) {
 		DRM_ERROR("Unable to get ltdc registers\n");
-		return PTR_ERR(ldev->regs);
+		ret = PTR_ERR(ldev->regs);
+		goto err;
 	}
 
 	for (i = 0; i < MAX_IRQ; i++) {
@@ -1064,7 +1066,7 @@  int ltdc_load(struct drm_device *ddev)
 						dev_name(dev), ddev);
 		if (ret) {
 			DRM_ERROR("Failed to register LTDC interrupt\n");
-			return ret;
+			goto err;
 		}
 	}
 
@@ -1079,7 +1081,7 @@  int ltdc_load(struct drm_device *ddev)
 	if (ret) {
 		DRM_ERROR("hardware identifier (0x%08x) not supported!\n",
 			  ldev->caps.hw_version);
-		return ret;
+		goto err;
 	}
 
 	DRM_INFO("ltdc hw version 0x%08x - ready\n", ldev->caps.hw_version);