From mboxrd@z Thu Jan 1 00:00:00 1970 From: SF Markus Elfring Date: Sun, 28 Jun 2015 12:07:34 +0000 Subject: Re: [PATCH v2] backlight: lp8788: Deletion of a check before backlight_device_unregister() Message-Id: <558FE386.7060704@users.sourceforge.net> List-Id: References: <530C5E18.1020800@users.sourceforge.net> <530CD2C4.4050903@users.sourceforge.net> <530CF8FF.8080600@users.sourceforge.net> <530DD06F.4090703@users.sourceforge.net> <5317A59D.4@users.sourceforge.net> <54720DEB.4060109@users.sourceforge.net> <20141124101006.GD4241@x1> <5473736F.8070705@users.sourceforge.net> In-Reply-To: <5473736F.8070705@users.sourceforge.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Lee Jones , Bryan Wu , Jean-Christophe Plagniol-Villard , Jingoo Han , Tomi Valkeinen , linux-fbdev@vger.kernel.org Cc: LKML , kernel-janitors@vger.kernel.org, Julia Lawall > From: Markus Elfring > > The backlight_device_unregister() function tests whether its argument is NULL > and then returns immediately. Thus the test around the call is not needed. > > This issue was detected by using the Coccinelle software. > > Signed-off-by: Markus Elfring > --- > drivers/video/backlight/lp8788_bl.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/drivers/video/backlight/lp8788_bl.c b/drivers/video/backlight/lp8788_bl.c > index d6c4f6a..24a055c 100644 > --- a/drivers/video/backlight/lp8788_bl.c > +++ b/drivers/video/backlight/lp8788_bl.c > @@ -221,8 +221,7 @@ static void lp8788_backlight_unregister(struct lp8788_bl *bl) > { > struct backlight_device *bl_dev = bl->bl_dev; > > - if (bl_dev) > - backlight_device_unregister(bl_dev); > + backlight_device_unregister(bl_dev); > } > > static ssize_t lp8788_get_bl_ctl_mode(struct device *dev, > Would you like to integrate this update suggestion into another source code repository? Regards, Markus