| Message ID | 20201014085722.26069-1-vulab@iscas.ac.cn (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | video: fbdev: sh_mobile_lcdcfb: Remove redundant null check before clk_prepare_enable/clk_disable_unprepare | expand |
On Wed, 14 Oct 2020 08:57:22 +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/sh_mobile_lcdcfb.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/video/fbdev/sh_mobile_lcdcfb.c > b/drivers/video/fbdev/sh_mobile_lcdcfb.c index c1043420dbd3..c0952cc96bdb > 100644 --- a/drivers/video/fbdev/sh_mobile_lcdcfb.c > +++ b/drivers/video/fbdev/sh_mobile_lcdcfb.c > @@ -341,8 +341,7 @@ static void lcdc_wait_bit(struct sh_mobile_lcdc_priv > *priv, static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) > { > if (atomic_inc_and_test(&priv->hw_usecnt)) { > - if (priv->dot_clk) > - clk_prepare_enable(priv->dot_clk); > + clk_prepare_enable(priv->dot_clk); > pm_runtime_get_sync(priv->dev); > } > } > @@ -351,8 +350,7 @@ static void sh_mobile_lcdc_clk_off(struct > sh_mobile_lcdc_priv *priv) { > if (atomic_sub_return(1, &priv->hw_usecnt) == -1) { > pm_runtime_put(priv->dev); > - if (priv->dot_clk) > - clk_disable_unprepare(priv->dot_clk); > + clk_disable_unprepare(priv->dot_clk); > } > } >
On Thu, 15 Oct 2020 10:10:15 +0200 Thomas Zimmermann <tzimmermann@suse.de> wrote: > On Wed, 14 Oct 2020 08:57:22 +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/sh_mobile_lcdcfb.c | 6 ++---- > > 1 file changed, 2 insertions(+), 4 deletions(-) > > > > diff --git a/drivers/video/fbdev/sh_mobile_lcdcfb.c > > b/drivers/video/fbdev/sh_mobile_lcdcfb.c index c1043420dbd3..c0952cc96bdb > > 100644 --- a/drivers/video/fbdev/sh_mobile_lcdcfb.c > > +++ b/drivers/video/fbdev/sh_mobile_lcdcfb.c > > @@ -341,8 +341,7 @@ static void lcdc_wait_bit(struct sh_mobile_lcdc_priv > > *priv, static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) > > { > > if (atomic_inc_and_test(&priv->hw_usecnt)) { > > - if (priv->dot_clk) > > - clk_prepare_enable(priv->dot_clk); > > + clk_prepare_enable(priv->dot_clk); > > pm_runtime_get_sync(priv->dev); > > } > > } > > @@ -351,8 +350,7 @@ static void sh_mobile_lcdc_clk_off(struct > > sh_mobile_lcdc_priv *priv) { > > if (atomic_sub_return(1, &priv->hw_usecnt) == -1) { > > pm_runtime_put(priv->dev); > > - if (priv->dot_clk) > > - clk_disable_unprepare(priv->dot_clk); > > + clk_disable_unprepare(priv->dot_clk); > > } > > } > > > > >
diff --git a/drivers/video/fbdev/sh_mobile_lcdcfb.c b/drivers/video/fbdev/sh_mobile_lcdcfb.c index c1043420dbd3..c0952cc96bdb 100644 --- a/drivers/video/fbdev/sh_mobile_lcdcfb.c +++ b/drivers/video/fbdev/sh_mobile_lcdcfb.c @@ -341,8 +341,7 @@ static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv, static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) { if (atomic_inc_and_test(&priv->hw_usecnt)) { - if (priv->dot_clk) - clk_prepare_enable(priv->dot_clk); + clk_prepare_enable(priv->dot_clk); pm_runtime_get_sync(priv->dev); } } @@ -351,8 +350,7 @@ static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv) { if (atomic_sub_return(1, &priv->hw_usecnt) == -1) { pm_runtime_put(priv->dev); - if (priv->dot_clk) - clk_disable_unprepare(priv->dot_clk); + clk_disable_unprepare(priv->dot_clk); } }
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/sh_mobile_lcdcfb.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)