linux-kernel - Re: [PATCH] nvmet: remove redundant assignment after left shift

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Message-ID: <YjTEJx2Uk2RN1+p5@C02CK6Q3MD6M>
Date:   Fri, 18 Mar 2022 11:40:55 -0600
From:   Keith Busch <kbusch@...nel.org>
To:     Colin Ian King <colin.i.king@...il.com>
Cc:     Christoph Hellwig <hch@....de>, Sagi Grimberg <sagi@...mberg.me>,
        Chaitanya Kulkarni <kch@...dia.com>,
        linux-nvme@...ts.infradead.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH] nvmet: remove redundant assignment after left shift

On Fri, Mar 18, 2022 at 01:30:14AM +0000, Colin Ian King wrote:
> The left shift is followed by a re-assignment back to cc_css,
> the assignment is redundant. Fix this by replacing the <<=
> operator with << instead.
> 
> Cleans up clang scan build warning:
> drivers/nvme/target/core.c:1124:10: warning: Although the value
> stored to 'cc_css' is used in the enclosing expression, the
> value is never actually read from 'cc_css' [deadcode.DeadStores]

Looks good.

Reviewed-by: Keith Busch <kbusch@...nel.org>