[PATCH] gpu: drm: rcar-du: rcar_du_drv: don't open code of_device_get_match_data()

[PATCH] gpu: drm: rcar-du: rcar_du_drv: don't open code of_device_get_match_data()

[Wolfram Sang]

From: Wolfram Sang <wsa+renesas@sang-engineering.com>

This change will also make Coverity happy by avoiding a theoretical NULL
pointer dereference; yet another reason is to use the above helper function
to tighten the code and make it more readable.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---

Compile tested only. I am on the road and can't test the multimedia drivers
because of no cables :( If someone could test it, that would be much
appreciated. Or I'll do it next week. The pattern worked for other drivers
I could actually test, though.

 drivers/gpu/drm/rcar-du/rcar_du_drv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index ed6006bf6bd893..ac95509e80bb7c 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -318,7 +318,7 @@ static int rcar_du_probe(struct platform_device *pdev)
 	init_waitqueue_head(&rcdu->commit.wait);
 
 	rcdu->dev = &pdev->dev;
-	rcdu->info = of_match_device(rcar_du_of_table, rcdu->dev)->data;
+	rcdu->info = of_device_get_match_data(rcdu->dev);
 
 	ddev = drm_dev_alloc(&rcar_du_driver, &pdev->dev);
 	if (!ddev)
-- 
2.7.0

Re: [PATCH] gpu: drm: rcar-du: rcar_du_drv: don't open code of_device_get_match_data()

[Geert Uytterhoeven]

On Tue, Mar 1, 2016 at 5:37 PM, Wolfram Sang <wsa@the-dreams.de> wrote:
> From: Wolfram Sang <wsa+renesas@sang-engineering.com>
>
> This change will also make Coverity happy by avoiding a theoretical NULL
> pointer dereference; yet another reason is to use the above helper function
> to tighten the code and make it more readable.
>
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH] gpu: drm: rcar-du: rcar_du_drv: don't open code of_device_get_match_data()

[Laurent Pinchart]

Hi Wolfram,

Thank you for the patch. It looks like I've missed it, sorry about that.

On Tuesday 01 March 2016 17:37:34 Wolfram Sang wrote:
> From: Wolfram Sang <wsa+renesas@sang-engineering.com>
> 
> This change will also make Coverity happy by avoiding a theoretical NULL
> pointer dereference; yet another reason is to use the above helper function
> to tighten the code and make it more readable.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

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

and taken in my tree.

> ---
> 
> Compile tested only. I am on the road and can't test the multimedia drivers
> because of no cables :( If someone could test it, that would be much
> appreciated. Or I'll do it next week. The pattern worked for other drivers
> I could actually test, though.
> 
>  drivers/gpu/drm/rcar-du/rcar_du_drv.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> b/drivers/gpu/drm/rcar-du/rcar_du_drv.c index
> ed6006bf6bd893..ac95509e80bb7c 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> @@ -318,7 +318,7 @@ static int rcar_du_probe(struct platform_device *pdev)
>  	init_waitqueue_head(&rcdu->commit.wait);
> 
>  	rcdu->dev = &pdev->dev;
> -	rcdu->info = of_match_device(rcar_du_of_table, rcdu->dev)->data;
> +	rcdu->info = of_device_get_match_data(rcdu->dev);
> 
>  	ddev = drm_dev_alloc(&rcar_du_driver, &pdev->dev);
>  	if (!ddev)

-- 
Regards,

Laurent Pinchart

Re: [PATCH] gpu: drm: rcar-du: rcar_du_drv: don't open code of_device_get_match_data()

[Laurent Pinchart]

Hi Wolfram,

Thank you for the patch. It looks like I've missed it, sorry about that.

On Tuesday 01 March 2016 17:37:34 Wolfram Sang wrote:
> From: Wolfram Sang <wsa+renesas@sang-engineering.com>
> 
> This change will also make Coverity happy by avoiding a theoretical NULL
> pointer dereference; yet another reason is to use the above helper function
> to tighten the code and make it more readable.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

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

and taken in my tree.

> ---
> 
> Compile tested only. I am on the road and can't test the multimedia drivers
> because of no cables :( If someone could test it, that would be much
> appreciated. Or I'll do it next week. The pattern worked for other drivers
> I could actually test, though.
> 
>  drivers/gpu/drm/rcar-du/rcar_du_drv.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> b/drivers/gpu/drm/rcar-du/rcar_du_drv.c index
> ed6006bf6bd893..ac95509e80bb7c 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> @@ -318,7 +318,7 @@ static int rcar_du_probe(struct platform_device *pdev)
>  	init_waitqueue_head(&rcdu->commit.wait);
> 
>  	rcdu->dev = &pdev->dev;
> -	rcdu->info = of_match_device(rcar_du_of_table, rcdu->dev)->data;
> +	rcdu->info = of_device_get_match_data(rcdu->dev);
> 
>  	ddev = drm_dev_alloc(&rcar_du_driver, &pdev->dev);
>  	if (!ddev)

-- 
Regards,

Laurent Pinchart
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