diff mbox

[v2] drm/rockchip: cdn-dp: Fix error handling

Message ID 20170220070815.23096-1-christophe.jaillet@wanadoo.fr (mailing list archive)
State New, archived
Headers show

Commit Message

Christophe JAILLET Feb. 20, 2017, 7:08 a.m. UTC
It is likely that both 'clk_disable_unprepare()' should be called if
'pm_runtime_get_sync()' fails.

Add a new label for that, because 'err_set_rate' is not meaningful in this
case.

Add a missing call to 'pm_runtime_put()'.

Fixes: 1a0f7ed3abe2 ("drm/rockchip: cdn-dp: add cdn DP support for rk3399")

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
V2: rename label
    add missing call to 'pm_runtime_put_sync()' in error path
---
 drivers/gpu/drm/rockchip/cdn-dp-core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

yao mark Feb. 20, 2017, 7:34 a.m. UTC | #1
On 2017年02月20日 15:08, Christophe JAILLET wrote:
> It is likely that both 'clk_disable_unprepare()' should be called if
> 'pm_runtime_get_sync()' fails.
>
> Add a new label for that, because 'err_set_rate' is not meaningful in this
> case.
>
> Add a missing call to 'pm_runtime_put()'.
>
> Fixes: 1a0f7ed3abe2 ("drm/rockchip: cdn-dp: add cdn DP support for rk3399")
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

looks good for me

Reviewed-by: Mark Yao <mark.yao@rock-chips.com>


> ---
> V2: rename label
>      add missing call to 'pm_runtime_put_sync()' in error path
> ---
>   drivers/gpu/drm/rockchip/cdn-dp-core.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> index 9ab67a670885..0fe1ec8b8fb1 100644
> --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
> +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> @@ -111,7 +111,7 @@ static int cdn_dp_clk_enable(struct cdn_dp_device *dp)
>   	ret = pm_runtime_get_sync(dp->dev);
>   	if (ret < 0) {
>   		DRM_DEV_ERROR(dp->dev, "cannot get pm runtime %d\n", ret);
> -		goto err_pclk;
> +		goto err_pm_runtime_get;
>   	}
>   
>   	reset_control_assert(dp->core_rst);
> @@ -133,6 +133,8 @@ static int cdn_dp_clk_enable(struct cdn_dp_device *dp)
>   	return 0;
>   
>   err_set_rate:
> +	pm_runtime_put(dp->dev);
> +err_pm_runtime_get:
>   	clk_disable_unprepare(dp->core_clk);
>   err_core_clk:
>   	clk_disable_unprepare(dp->pclk);
Sean Paul Feb. 23, 2017, 4:48 p.m. UTC | #2
On Mon, Feb 20, 2017 at 08:08:15AM +0100, Christophe JAILLET wrote:
> It is likely that both 'clk_disable_unprepare()' should be called if
> 'pm_runtime_get_sync()' fails.
> 
> Add a new label for that, because 'err_set_rate' is not meaningful in this
> case.
> 
> Add a missing call to 'pm_runtime_put()'.
> 
> Fixes: 1a0f7ed3abe2 ("drm/rockchip: cdn-dp: add cdn DP support for rk3399")
> 

Applied to drm-misc-next-fixes

Thanks,

Sean

> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
> V2: rename label
>     add missing call to 'pm_runtime_put_sync()' in error path
> ---
>  drivers/gpu/drm/rockchip/cdn-dp-core.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> index 9ab67a670885..0fe1ec8b8fb1 100644
> --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
> +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> @@ -111,7 +111,7 @@ static int cdn_dp_clk_enable(struct cdn_dp_device *dp)
>  	ret = pm_runtime_get_sync(dp->dev);
>  	if (ret < 0) {
>  		DRM_DEV_ERROR(dp->dev, "cannot get pm runtime %d\n", ret);
> -		goto err_pclk;
> +		goto err_pm_runtime_get;
>  	}
>  
>  	reset_control_assert(dp->core_rst);
> @@ -133,6 +133,8 @@ static int cdn_dp_clk_enable(struct cdn_dp_device *dp)
>  	return 0;
>  
>  err_set_rate:
> +	pm_runtime_put(dp->dev);
> +err_pm_runtime_get:
>  	clk_disable_unprepare(dp->core_clk);
>  err_core_clk:
>  	clk_disable_unprepare(dp->pclk);
> -- 
> 2.9.3
diff mbox

Patch

diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
index 9ab67a670885..0fe1ec8b8fb1 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
@@ -111,7 +111,7 @@  static int cdn_dp_clk_enable(struct cdn_dp_device *dp)
 	ret = pm_runtime_get_sync(dp->dev);
 	if (ret < 0) {
 		DRM_DEV_ERROR(dp->dev, "cannot get pm runtime %d\n", ret);
-		goto err_pclk;
+		goto err_pm_runtime_get;
 	}
 
 	reset_control_assert(dp->core_rst);
@@ -133,6 +133,8 @@  static int cdn_dp_clk_enable(struct cdn_dp_device *dp)
 	return 0;
 
 err_set_rate:
+	pm_runtime_put(dp->dev);
+err_pm_runtime_get:
 	clk_disable_unprepare(dp->core_clk);
 err_core_clk:
 	clk_disable_unprepare(dp->pclk);