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* [PATCH] omapfb/dss: Remove redundant null check before clk_prepare_enable/clk_disable_unprepare
@ 2020-10-14  8:49 Xu Wang
  2020-10-15  8:08 ` Thomas Zimmermann
  0 siblings, 1 reply; 4+ messages in thread
From: Xu Wang @ 2020-10-14  8:49 UTC (permalink / raw)
  To: b.zolnierkie, pakki001, yuehaibing
  Cc: linux-omap, linux-fbdev, dri-devel, linux-kernel

Because clk_prepare_enable() and clk_disable_unprepare() already checked
NULL clock parameter, so the additional checks are unnecessary, just
remove them.

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
---
 drivers/video/fbdev/omap2/omapfb/dss/venc.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/video/fbdev/omap2/omapfb/dss/venc.c b/drivers/video/fbdev/omap2/omapfb/dss/venc.c
index 0b0ad20afd63..8895fb8493d8 100644
--- a/drivers/video/fbdev/omap2/omapfb/dss/venc.c
+++ b/drivers/video/fbdev/omap2/omapfb/dss/venc.c
@@ -890,8 +890,7 @@ static int venc_remove(struct platform_device *pdev)
 
 static int venc_runtime_suspend(struct device *dev)
 {
-	if (venc.tv_dac_clk)
-		clk_disable_unprepare(venc.tv_dac_clk);
+	clk_disable_unprepare(venc.tv_dac_clk);
 
 	dispc_runtime_put();
 
@@ -906,8 +905,7 @@ static int venc_runtime_resume(struct device *dev)
 	if (r < 0)
 		return r;
 
-	if (venc.tv_dac_clk)
-		clk_prepare_enable(venc.tv_dac_clk);
+	clk_prepare_enable(venc.tv_dac_clk);
 
 	return 0;
 }
-- 
2.17.1


^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [PATCH] omapfb/dss: Remove redundant null check before clk_prepare_enable/clk_disable_unprepare
  2020-10-14  8:49 [PATCH] omapfb/dss: Remove redundant null check before clk_prepare_enable/clk_disable_unprepare Xu Wang
@ 2020-10-15  8:08 ` Thomas Zimmermann
  2020-10-16  9:53   ` Thomas Zimmermann
  2020-10-16  9:53   ` Thomas Zimmermann
  0 siblings, 2 replies; 4+ messages in thread
From: Thomas Zimmermann @ 2020-10-15  8:08 UTC (permalink / raw)
  To: Xu Wang
  Cc: b.zolnierkie, pakki001, yuehaibing, linux-fbdev, linux-omap,
	linux-kernel, dri-devel

On Wed, 14 Oct 2020 08:49:20 +0000 Xu Wang <vulab@iscas.ac.cn> wrote:

> Because clk_prepare_enable() and clk_disable_unprepare() already checked
> NULL clock parameter, so the additional checks are unnecessary, just
> remove them.
> 
> Signed-off-by: Xu Wang <vulab@iscas.ac.cn>

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>

> ---
>  drivers/video/fbdev/omap2/omapfb/dss/venc.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/video/fbdev/omap2/omapfb/dss/venc.c
> b/drivers/video/fbdev/omap2/omapfb/dss/venc.c index
> 0b0ad20afd63..8895fb8493d8 100644 ---
> a/drivers/video/fbdev/omap2/omapfb/dss/venc.c +++
> b/drivers/video/fbdev/omap2/omapfb/dss/venc.c @@ -890,8 +890,7 @@ static
> int venc_remove(struct platform_device *pdev) 
>  static int venc_runtime_suspend(struct device *dev)
>  {
> -	if (venc.tv_dac_clk)
> -		clk_disable_unprepare(venc.tv_dac_clk);
> +	clk_disable_unprepare(venc.tv_dac_clk);
>  
>  	dispc_runtime_put();
>  
> @@ -906,8 +905,7 @@ static int venc_runtime_resume(struct device *dev)
>  	if (r < 0)
>  		return r;
>  
> -	if (venc.tv_dac_clk)
> -		clk_prepare_enable(venc.tv_dac_clk);
> +	clk_prepare_enable(venc.tv_dac_clk);
>  
>  	return 0;
>  }



-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [PATCH] omapfb/dss: Remove redundant null check before clk_prepare_enable/clk_disable_unprepare
  2020-10-15  8:08 ` Thomas Zimmermann
@ 2020-10-16  9:53   ` Thomas Zimmermann
  2020-10-16  9:53   ` Thomas Zimmermann
  1 sibling, 0 replies; 4+ messages in thread
From: Thomas Zimmermann @ 2020-10-16  9:53 UTC (permalink / raw)
  To: Xu Wang
  Cc: b.zolnierkie, pakki001, yuehaibing, linux-fbdev, linux-omap,
	linux-kernel, dri-devel

On Thu, 15 Oct 2020 10:08:27 +0200 Thomas Zimmermann <tzimmermann@suse.de>
wrote:

> On Wed, 14 Oct 2020 08:49:20 +0000 Xu Wang <vulab@iscas.ac.cn> wrote:
> 
> > Because clk_prepare_enable() and clk_disable_unprepare() already checked
> > NULL clock parameter, so the additional checks are unnecessary, just
> > remove them.
> > 
> > Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
> 
> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
> 

Merged into drm-misc-next. Thanks!

> > ---
> >  drivers/video/fbdev/omap2/omapfb/dss/venc.c | 6 ++----
> >  1 file changed, 2 insertions(+), 4 deletions(-)
> > 
> > diff --git a/drivers/video/fbdev/omap2/omapfb/dss/venc.c
> > b/drivers/video/fbdev/omap2/omapfb/dss/venc.c index
> > 0b0ad20afd63..8895fb8493d8 100644 ---
> > a/drivers/video/fbdev/omap2/omapfb/dss/venc.c +++
> > b/drivers/video/fbdev/omap2/omapfb/dss/venc.c @@ -890,8 +890,7 @@ static
> > int venc_remove(struct platform_device *pdev) 
> >  static int venc_runtime_suspend(struct device *dev)
> >  {
> > -	if (venc.tv_dac_clk)
> > -		clk_disable_unprepare(venc.tv_dac_clk);
> > +	clk_disable_unprepare(venc.tv_dac_clk);
> >  
> >  	dispc_runtime_put();
> >  
> > @@ -906,8 +905,7 @@ static int venc_runtime_resume(struct device *dev)
> >  	if (r < 0)
> >  		return r;
> >  
> > -	if (venc.tv_dac_clk)
> > -		clk_prepare_enable(venc.tv_dac_clk);
> > +	clk_prepare_enable(venc.tv_dac_clk);
> >  
> >  	return 0;
> >  }
> 
> 
> 



-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [PATCH] omapfb/dss: Remove redundant null check before clk_prepare_enable/clk_disable_unprepare
  2020-10-15  8:08 ` Thomas Zimmermann
  2020-10-16  9:53   ` Thomas Zimmermann
@ 2020-10-16  9:53   ` Thomas Zimmermann
  1 sibling, 0 replies; 4+ messages in thread
From: Thomas Zimmermann @ 2020-10-16  9:53 UTC (permalink / raw)
  To: Xu Wang
  Cc: b.zolnierkie, pakki001, yuehaibing, linux-fbdev, linux-omap,
	linux-kernel, dri-devel

On Thu, 15 Oct 2020 10:08:27 +0200 Thomas Zimmermann <tzimmermann@suse.de>
wrote:

> On Wed, 14 Oct 2020 08:49:20 +0000 Xu Wang <vulab@iscas.ac.cn> wrote:
> 
> > Because clk_prepare_enable() and clk_disable_unprepare() already checked
> > NULL clock parameter, so the additional checks are unnecessary, just
> > remove them.
> > 
> > Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
> 
> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
> 

Merged into drm-misc-next. Thanks!

> > ---
> >  drivers/video/fbdev/omap2/omapfb/dss/venc.c | 6 ++----
> >  1 file changed, 2 insertions(+), 4 deletions(-)
> > 
> > diff --git a/drivers/video/fbdev/omap2/omapfb/dss/venc.c
> > b/drivers/video/fbdev/omap2/omapfb/dss/venc.c index
> > 0b0ad20afd63..8895fb8493d8 100644 ---
> > a/drivers/video/fbdev/omap2/omapfb/dss/venc.c +++
> > b/drivers/video/fbdev/omap2/omapfb/dss/venc.c @@ -890,8 +890,7 @@ static
> > int venc_remove(struct platform_device *pdev) 
> >  static int venc_runtime_suspend(struct device *dev)
> >  {
> > -	if (venc.tv_dac_clk)
> > -		clk_disable_unprepare(venc.tv_dac_clk);
> > +	clk_disable_unprepare(venc.tv_dac_clk);
> >  
> >  	dispc_runtime_put();
> >  
> > @@ -906,8 +905,7 @@ static int venc_runtime_resume(struct device *dev)
> >  	if (r < 0)
> >  		return r;
> >  
> > -	if (venc.tv_dac_clk)
> > -		clk_prepare_enable(venc.tv_dac_clk);
> > +	clk_prepare_enable(venc.tv_dac_clk);
> >  
> >  	return 0;
> >  }
> 
> 
> 



-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer

^ permalink raw reply	[flat|nested] 4+ messages in thread

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Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-10-14  8:49 [PATCH] omapfb/dss: Remove redundant null check before clk_prepare_enable/clk_disable_unprepare Xu Wang
2020-10-15  8:08 ` Thomas Zimmermann
2020-10-16  9:53   ` Thomas Zimmermann
2020-10-16  9:53   ` Thomas Zimmermann

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