linux-kernel - Re: [PATCH] mtd: rawnand: silence static checker warning in nand_setup

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Date:   Mon, 10 May 2021 12:02:32 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Dan Carpenter <dan.carpenter@...cle.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Manivannan Sadhasivam <mani@...nel.org>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] mtd: rawnand: silence static checker warning in nand_setup_interface()

On Tue, 2021-04-20 at 08:44:51 UTC, Dan Carpenter wrote:
> Smatch complains that the error code is not set on this error path:
> 
>     drivers/mtd/nand/raw/nand_base.c:842 nand_setup_interface()
>     warn: missing error code 'ret'
> 
> But actually returning success is intentional because the NAND chip will
> still work in mode 0.  This patch adds a "ret = 0;" assignment to make
> the intent more clear and to silence the static checker warning.  It
> doesn't affect the compiled code because GCC optimises the assignment
> away.
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks.

Miquel