netdev - Re: [PATCH] qed: Avoid constant logical operation warning in qed_vf_pf

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Message-Id: <20180926.202450.236688165629228809.davem@davemloft.net>
Date:   Wed, 26 Sep 2018 20:24:50 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     natechancellor@...il.com
Cc:     Ariel.Elior@...ium.com, everest-linux-l2@...ium.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] qed: Avoid constant logical operation warning in
 qed_vf_pf_acquire

From: Nathan Chancellor <natechancellor@...il.com>
Date: Mon, 24 Sep 2018 15:17:03 -0700

> Clang warns when a constant is used in a boolean context as it thinks a
> bitwise operation may have been intended.
> 
> drivers/net/ethernet/qlogic/qed/qed_vf.c:415:27: warning: use of logical
> '&&' with constant operand [-Wconstant-logical-operand]
>         if (!p_iov->b_pre_fp_hsi &&
>                                  ^
> drivers/net/ethernet/qlogic/qed/qed_vf.c:415:27: note: use '&' for a
> bitwise operation
>         if (!p_iov->b_pre_fp_hsi &&
>                                  ^~
>                                  &
> drivers/net/ethernet/qlogic/qed/qed_vf.c:415:27: note: remove constant
> to silence this warning
>         if (!p_iov->b_pre_fp_hsi &&
>                                 ~^~
> 1 warning generated.
> 
> This has been here since commit 1fe614d10f45 ("qed: Relax VF firmware
> requirements") and I am not entirely sure why since 0 isn't a special
> case. Just remove the statement causing Clang to warn since it isn't
> required.
> 
> Link: https://github.com/ClangBuiltLinux/linux/issues/126
> Signed-off-by: Nathan Chancellor <natechancellor@...il.com>

Applied.