diff mbox series

[1/3] drm/omap: fix uninitialized ret variable

Message ID 20180329104038.29154-1-tomi.valkeinen@ti.com
State Accepted
Commit 77eeac24b10fc84d3ffd5b11a897dff88dde244d
Headers show
Series [1/3] drm/omap: fix uninitialized ret variable | expand

Commit Message

Tomi Valkeinen March 29, 2018, 10:40 a.m. UTC
audio_config function for both HDMI4 and HDMI5 return uninitialized
value as the error code if the display is not currently enabled. For
some reason this has not caused any issues.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
---
 drivers/gpu/drm/omapdrm/dss/hdmi4.c | 2 +-
 drivers/gpu/drm/omapdrm/dss/hdmi5.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

Comments

Emil Velikov March 29, 2018, 10:58 a.m. UTC | #1
On 29 March 2018 at 11:40, Tomi Valkeinen <tomi.valkeinen@ti.com> wrote:
> audio_config function for both HDMI4 and HDMI5 return uninitialized
> value as the error code if the display is not currently enabled. For
> some reason this has not caused any issues.
>
Doubt many people try hdmi audio with disabled display ;-)

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

-Emil
Tomi Valkeinen March 29, 2018, 12:11 p.m. UTC | #2
On 29/03/18 13:58, Emil Velikov wrote:
> On 29 March 2018 at 11:40, Tomi Valkeinen <tomi.valkeinen@ti.com> wrote:
>> audio_config function for both HDMI4 and HDMI5 return uninitialized
>> value as the error code if the display is not currently enabled. For
>> some reason this has not caused any issues.
>>
> Doubt many people try hdmi audio with disabled display ;-)

I think it can happen if the display is connected but blanked.

> Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

Thanks for the review!

 Tomi
Laurent Pinchart April 3, 2018, 11:01 a.m. UTC | #3
Hi Tomi,

Thank you for the patch.

On Thursday, 29 March 2018 13:40:36 EEST Tomi Valkeinen wrote:
> audio_config function for both HDMI4 and HDMI5 return uninitialized
> value as the error code if the display is not currently enabled. For
> some reason this has not caused any issues.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

I wonder why the compiler hasn't caught this before.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> ---
>  drivers/gpu/drm/omapdrm/dss/hdmi4.c | 2 +-
>  drivers/gpu/drm/omapdrm/dss/hdmi5.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c
> b/drivers/gpu/drm/omapdrm/dss/hdmi4.c index 97c88861d67a..5879f45f6fc9
> 100644
> --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c
> +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
> @@ -679,7 +679,7 @@ static int hdmi_audio_config(struct device *dev,
>  			     struct omap_dss_audio *dss_audio)
>  {
>  	struct omap_hdmi *hd = dev_get_drvdata(dev);
> -	int ret;
> +	int ret = 0;
> 
>  	mutex_lock(&hd->lock);
> 
> diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5.c
> b/drivers/gpu/drm/omapdrm/dss/hdmi5.c index d28da9ac3e90..ae1a001d1b83
> 100644
> --- a/drivers/gpu/drm/omapdrm/dss/hdmi5.c
> +++ b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
> @@ -671,7 +671,7 @@ static int hdmi_audio_config(struct device *dev,
>  			     struct omap_dss_audio *dss_audio)
>  {
>  	struct omap_hdmi *hd = dev_get_drvdata(dev);
> -	int ret;
> +	int ret = 0;
> 
>  	mutex_lock(&hd->lock);
diff mbox series

Patch

diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
index 97c88861d67a..5879f45f6fc9 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
@@ -679,7 +679,7 @@  static int hdmi_audio_config(struct device *dev,
 			     struct omap_dss_audio *dss_audio)
 {
 	struct omap_hdmi *hd = dev_get_drvdata(dev);
-	int ret;
+	int ret = 0;
 
 	mutex_lock(&hd->lock);
 
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5.c b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
index d28da9ac3e90..ae1a001d1b83 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi5.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
@@ -671,7 +671,7 @@  static int hdmi_audio_config(struct device *dev,
 			     struct omap_dss_audio *dss_audio)
 {
 	struct omap_hdmi *hd = dev_get_drvdata(dev);
-	int ret;
+	int ret = 0;
 
 	mutex_lock(&hd->lock);