From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752475AbbF2Gfm (ORCPT ); Mon, 29 Jun 2015 02:35:42 -0400 Received: from smtprelay.restena.lu ([158.64.1.62]:34337 "EHLO smtprelay.restena.lu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750738AbbF2Gfg convert rfc822-to-8bit (ORCPT ); Mon, 29 Jun 2015 02:35:36 -0400 Date: Mon, 29 Jun 2015 08:34:47 +0200 From: Bruno =?UTF-8?B?UHLDqW1vbnQ=?= To: SF Markus Elfring , Jiri Kosina Cc: linux-input@vger.kernel.org, LKML , kernel-janitors@vger.kernel.org, Julia Lawall Subject: Re: [PATCH] HID-picoLCD: Deletion of unnecessary checks before three function calls Message-ID: <20150629083447.68b6cd0c@pluto.restena.lu> In-Reply-To: <558FE090.8030307@users.sourceforge.net> References: <5307CAA2.8060406@users.sourceforge.net> <530A086E.8010901@users.sourceforge.net> <530A72AA.3000601@users.sourceforge.net> <530B5FB6.6010207@users.sourceforge.net> <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> <546CD595.3090508@users.sourceforge.net> <558FE090.8030307@users.sourceforge.net> X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.27; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 28 Jun 2015 13:54:56 +0200 SF Markus Elfring wrote: > > From: Markus Elfring > > Date: Wed, 19 Nov 2014 18:30:22 +0100 > > > > The functions backlight_device_unregister(), lcd_device_unregister() and > > rc_unregister_device() test whether their argument is NULL and then > > return 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/hid/hid-picolcd_backlight.c | 3 +-- > > drivers/hid/hid-picolcd_cir.c | 3 +-- > > drivers/hid/hid-picolcd_lcd.c | 3 +-- > > 3 files changed, 3 insertions(+), 6 deletions(-) > > > > diff --git a/drivers/hid/hid-picolcd_backlight.c b/drivers/hid/hid-picolcd_backlight.c > > index a32c5f8..808807a 100644 > > --- a/drivers/hid/hid-picolcd_backlight.c > > +++ b/drivers/hid/hid-picolcd_backlight.c > > @@ -94,8 +94,7 @@ void picolcd_exit_backlight(struct picolcd_data *data) > > struct backlight_device *bdev = data->backlight; > > > > data->backlight = NULL; > > - if (bdev) > > - backlight_device_unregister(bdev); > > + backlight_device_unregister(bdev); > > } > > > > int picolcd_resume_backlight(struct picolcd_data *data) > > diff --git a/drivers/hid/hid-picolcd_cir.c b/drivers/hid/hid-picolcd_cir.c > > index 045f8eb..9628651 100644 > > --- a/drivers/hid/hid-picolcd_cir.c > > +++ b/drivers/hid/hid-picolcd_cir.c > > @@ -145,7 +145,6 @@ void picolcd_exit_cir(struct picolcd_data *data) > > struct rc_dev *rdev = data->rc_dev; > > > > data->rc_dev = NULL; > > - if (rdev) > > - rc_unregister_device(rdev); > > + rc_unregister_device(rdev); > > } > > > > diff --git a/drivers/hid/hid-picolcd_lcd.c b/drivers/hid/hid-picolcd_lcd.c > > index 89821c2..22dcbe1 100644 > > --- a/drivers/hid/hid-picolcd_lcd.c > > +++ b/drivers/hid/hid-picolcd_lcd.c > > @@ -92,8 +92,7 @@ void picolcd_exit_lcd(struct picolcd_data *data) > > struct lcd_device *ldev = data->lcd; > > > > data->lcd = NULL; > > - if (ldev) > > - lcd_device_unregister(ldev); > > + lcd_device_unregister(ldev); > > } > > > > int picolcd_resume_lcd(struct picolcd_data *data) > > > > Would you like to integrate this update suggestion > into another source code repository? Sorry for forgetting about this patch. Looks good to me: Reviewed-by: Bruno Prémont Jiri, can you take it? Best regards, Bruno > Regards, > Markus