linux-kernel - Re: [PATCH] media: i2c: adv748x: Fix unsafe macros

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Date:   Fri, 17 Jan 2020 08:47:43 -0800
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Hans Verkuil <hverkuil@...all.nl>
Cc:     Nathan Chancellor <natechancellor@...il.com>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        linux-media@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH] media: i2c: adv748x: Fix unsafe macros

On Thu, Jan 16, 2020 at 11:25 PM Hans Verkuil <hverkuil@...all.nl> wrote:
>
> On 1/14/20 12:14 AM, Nathan Chancellor wrote:
> > On Tue, Oct 22, 2019 at 08:25:22AM -0500, Gustavo A. R. Silva wrote:
> >> Enclose multiple macro parameters in parentheses in order to
> >> make such macros safer and fix the Clang warning below:
> >>
> >> drivers/media/i2c/adv748x/adv748x-afe.c:452:12: warning: operator '?:'
> >> has lower precedence than '|'; '|' will be evaluated first
> >> [-Wbitwise-conditional-parentheses]
> >>
> >> ret = sdp_clrset(state, ADV748X_SDP_FRP, ADV748X_SDP_FRP_MASK, enable
> >> ? ctrl->val - 1 : 0);
> >>
> >> Fixes: 3e89586a64df ("media: i2c: adv748x: add adv748x driver")
> >> Reported-by: Dmitry Vyukov <dvyukov@...gle.com>
> >> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com
> >
> > It doesn't look like this was picked up? I still see this warning on
> > 5.5-rc6 and next-20200113.
>
> It's been picked up some time ago and will appear in 5.6.

https://git.linuxtv.org/media_tree.git/commit/?id=0d962e061abcf1b9105f88fb850158b5887fbca3

-- 
Thanks,
~Nick Desaulniers