From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-x244.google.com (mail-pa0-x244.google.com [IPv6:2607:f8b0:400e:c03::244]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3r1D4Z1wRYzDq5m for ; Fri, 6 May 2016 11:01:34 +1000 (AEST) Received: by mail-pa0-x244.google.com with SMTP id zy2so10952764pac.2 for ; Thu, 05 May 2016 18:01:34 -0700 (PDT) Subject: Re: [PATCH 2/2] powerpc: Update of_remove_property() call sites to remove null checking To: Michael Ellerman , Tyrel Datwyler , devicetree@vger.kernel.org, linuxppc-dev@lists.ozlabs.org References: <1461821695-19204-1-git-send-email-sjitindarsingh@gmail.com> <1461821695-19204-2-git-send-email-sjitindarsingh@gmail.com> <57292702.5070507@linux.vnet.ibm.com> <1462431031.12473.3.camel@ellerman.id.au> Cc: grant.likely@linaro.org, frowand.list@gmail.com, robh+dt@kernel.org, paulus@samba.org From: Suraj Jitindar Singh Message-ID: <572BECE6.1080303@gmail.com> Date: Fri, 6 May 2016 11:01:26 +1000 MIME-Version: 1.0 In-Reply-To: <1462431031.12473.3.camel@ellerman.id.au> Content-Type: multipart/alternative; boundary="------------050905060000030904040301" List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. --------------050905060000030904040301 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 05/05/16 16:50, Michael Ellerman wrote: > On Tue, 2016-05-03 at 15:32 -0700, Tyrel Datwyler wrote: >> On 04/27/20= 16 10:34 PM, Suraj Jitindar Singh wrote: >>> diff --git a/arch/powerpc/pl= atforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c >>= > index ceb18d3..a560a98 100644 >>> --- a/arch/powerpc/platforms/pseries/= mobility.c >>> +++ b/arch/powerpc/platforms/pseries/mobility.c >>> @@ -19= 1,8 +191,8 @@ static int update_dt_node(__be32 phandle, s32 scope) >>> = break; >>> >>> case 0x80000000: >>> - = prop =3D of_find_property(dn, prop_name, NULL); >>> - = of_remove_property(dn, prop); >>> + of_remove_propert= y(dn, of_find_property(dn, >>> + prop_name, NU= LL)); >>> prop =3D NULL; >>> break; >>>= >> >> You haven't removed a NULL check here, as suggested by the changel= og, >> but instead made a cosmetic change to the code that still leaves b= ehind >> a now unnecessary "prop =3D NULL;" to bit rot. > > Yeah I think = you're right. Though it's not very clear how prop is used in that > function. > > Please one of you sen= d me an incremental to remove the prop =3D NULL; > > cheers > I didn't delete the prop =3D NULL; initially as I didn't fully understand= how it was used in the rest of the function and the effect of deleting it. --------------050905060000030904040301 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit

On 05/05/16 16:50, Michael Ellerman wrote:
> On Tue, 2016-05-03 at 15:32 -0700, Tyrel Datwyler wrote: >> On 04/27/2016 10:34 PM, Suraj Jitindar Singh wrote: >>> diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c >>> index ceb18d3..a560a98 100644 >>> --- a/arch/powerpc/platforms/pseries/mobility.c >>> +++ b/arch/powerpc/platforms/pseries/mobility.c >>> @@ -191,8 +191,8 @@ static int update_dt_node(__be32 phandle, s32 scope) >>>                  break; >>>  >>>              case 0x80000000: >>> -                prop = of_find_property(dn, prop_name, NULL); >>> -                of_remove_property(dn, prop); >>> +                of_remove_property(dn, of_find_property(dn, >>> +                            prop_name, NULL)); >>>                  prop = NULL; >>>                  break; >>> >> >> You haven't removed a NULL check here, as suggested by the changelog, >> but instead made a cosmetic change to the code that still leaves behind >> a now unnecessary "prop = NULL;" to bit rot. > > Yeah I think you're right. Though it's not very clear how prop is used in that > function. > > Please one of you send me an incremental to remove the prop = NULL; > > cheers >

I didn't delete the prop = NULL; initially as I didn't fully understand
how it was used in the rest of the function and the effect of deleting
it.

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