From: "Rui Miguel Silva" <rmfrfs@gmail.com>
To: <trix@redhat.com>, <laurent.pinchart@ideasonboard.com>,
<slongerbeam@gmail.com>, <p.zabel@pengutronix.de>,
<mchehab@kernel.org>, <gregkh@linuxfoundation.org>,
<shawnguo@kernel.org>, <s.hauer@pengutronix.de>,
<kernel@pengutronix.de>, <festevam@gmail.com>,
<linux-imx@nxp.com>
Cc: <linux-media@vger.kernel.org>, <linux-staging@lists.linux.dev>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] media: imx: imx7_mipi_csis: convert some switch cases to the default
Date: Tue, 01 Jun 2021 12:03:59 +0100 [thread overview]
Message-ID: <CBS8CSIHJTXJ.1HWQ3AWYCC1V8@arch-thunder> (raw)
In-Reply-To: <20210531174300.2594109-1-trix@redhat.com>
Hi Tom,
Thanks for the patch.
On Mon May 31, 2021 at 6:43 PM WEST, wrote:
> From: Tom Rix <trix@redhat.com>
>
> Static analysis reports this false positive
> imx7-mipi-csis.c:1027:2: warning: 4th function call argument is
> an uninitialized value
>
> The variable 'align' is falsely reported as uninitialized.
> Even though all the cases are covered in the
> switch (csis_fmt->width % 8) {
>
> Because there is no default case, it is reported as uninialized.
>
> Improve the switch by converting the most numerous set of cases
> to the default and silence the false positive.
>
> Signed-off-by: Tom Rix <trix@redhat.com>
It solves that, looks good to me.
Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com>
------
Cheers,
Rui
> ---
> drivers/staging/media/imx/imx7-mipi-csis.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/staging/media/imx/imx7-mipi-csis.c b/drivers/staging/media/imx/imx7-mipi-csis.c
> index d573f3475d28..330f283030ec 100644
> --- a/drivers/staging/media/imx/imx7-mipi-csis.c
> +++ b/drivers/staging/media/imx/imx7-mipi-csis.c
> @@ -1016,10 +1016,8 @@ static int mipi_csis_set_fmt(struct v4l2_subdev *sd,
> case 6:
> align = 2;
> break;
> - case 1:
> - case 3:
> - case 5:
> - case 7:
> + default:
> + /* 1, 3, 5, 7 */
> align = 3;
> break;
> }
> --
> 2.26.3
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next prev parent reply other threads:[~2021-06-01 11:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-31 17:43 [PATCH] media: imx: imx7_mipi_csis: convert some switch cases to the default trix
2021-06-01 11:03 ` Rui Miguel Silva [this message]
2021-06-01 12:46 ` Laurent Pinchart
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