Messages in this thread | | | From | Jani Nikula <> | Subject | Re: [PATCH] GPU-DRM-i915: Delete an unnecessary check before the function call "pwm_put" | Date | Fri, 06 Nov 2015 14:52:27 +0200 |
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On Fri, 06 Nov 2015, SF Markus Elfring <elfring@users.sourceforge.net> wrote: > From: Markus Elfring <elfring@users.sourceforge.net> > Date: Fri, 6 Nov 2015 13:38:22 +0100 > > The pwm_put() function tests whether its argument is NULL and then > returns immediately. Thus the test around the call is not needed.
The compiler doesn't need it, but IMO it's useful documentation for humans.
BR, Jani.
> > This issue was detected by using the Coccinelle software. > > Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> > --- > drivers/gpu/drm/i915/intel_panel.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c > index a24df35..3d8d913 100644 > --- a/drivers/gpu/drm/i915/intel_panel.c > +++ b/drivers/gpu/drm/i915/intel_panel.c > @@ -1729,8 +1729,7 @@ void intel_panel_destroy_backlight(struct drm_connector *connector) > struct intel_panel *panel = &intel_connector->panel; > > /* dispose of the pwm */ > - if (panel->backlight.pwm) > - pwm_put(panel->backlight.pwm); > + pwm_put(panel->backlight.pwm); > > panel->backlight.present = false; > }
-- Jani Nikula, Intel Open Source Technology Center
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