linux-kernel - Re: [PATCH] dm ioctl: Remove double parentheses

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Date:   Fri, 31 Mar 2017 19:07:33 -0700
From:   Joe Perches <joe@...ches.com>
To:     Matthias Kaehlcke <mka@...omium.org>,
        Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...hat.com>, dm-devel@...hat.com
Cc:     Shaohua Li <shli@...nel.org>, linux-raid@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Grant Grundler <grundler@...omium.org>,
        Michael Davidson <md@...gle.com>,
        Greg Hackmann <ghackmann@...gle.com>
Subject: Re: [PATCH] dm ioctl: Remove double parentheses

On Fri, 2017-03-31 at 18:50 -0700, Matthias Kaehlcke wrote:
> El Thu, Mar 16, 2017 at 09:48:30AM -0700 Matthias Kaehlcke ha dit:
> 
> > The extra pair of parantheses is not needed and causes clang to generate
> > the following warning:
> > 
> > drivers/md/dm-ioctl.c:1776:11: error: equality comparison with extraneous parentheses [-Werror,-Wparentheses-equality]
> >         if ((cmd == DM_DEV_CREATE_CMD)) {
> >              ~~~~^~~~~~~~~~~~~~~~~~~~
> > drivers/md/dm-ioctl.c:1776:11: note: remove extraneous parentheses around the comparison to silence this warning
> >         if ((cmd == DM_DEV_CREATE_CMD)) {
> >             ~    ^                   ~
> > drivers/md/dm-ioctl.c:1776:11: note: use '=' to turn this equality comparison into an assignment
> >         if ((cmd == DM_DEV_CREATE_CMD)) {

There are dozens of these comparisons in the kernel.
Are you fixing them all or just this one?