From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Cc: s.hauer@pengutronix.de, kernel@pengutronix.de,
shawnguo@kernel.org, festevam@gmail.com, linux-imx@nxp.com,
j.beisert@pengutronix.de, krzysztof.h1@poczta.fm,
linux-fbdev@vger.kernel.org, kernel-janitors@vger.kernel.org,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] video: fbdev: imxfb: Fix an error message
Date: Fri, 7 May 2021 09:11:19 +0200 [thread overview]
Message-ID: <5cd9c8de-acd9-9594-38a0-62ecf5734c10@wanadoo.fr> (raw)
In-Reply-To: <20210507050503.iwrcis2xzhjjthmp@pengutronix.de>
Le 07/05/2021 à 07:05, Uwe Kleine-König a écrit :
> Hello Christophe,
>
> On Thu, May 06, 2021 at 08:57:05PM +0200, Christophe JAILLET wrote:
>> 'ret' is known to be 0 here.
>> No error code is available, so just remove it from the error message.
>>
>> Fixes: 72330b0eeefc ("i.MX Framebuffer: Use readl/writel instead of direct pointer deref")
>> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
>> ---
>> drivers/video/fbdev/imxfb.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/video/fbdev/imxfb.c b/drivers/video/fbdev/imxfb.c
>> index 7f8debd2da06..ad598257ab38 100644
>> --- a/drivers/video/fbdev/imxfb.c
>> +++ b/drivers/video/fbdev/imxfb.c
>> @@ -992,7 +992,7 @@ static int imxfb_probe(struct platform_device *pdev)
>> info->screen_buffer = dma_alloc_wc(&pdev->dev, fbi->map_size,
>> &fbi->map_dma, GFP_KERNEL);
>> if (!info->screen_buffer) {
>> - dev_err(&pdev->dev, "Failed to allocate video RAM: %d\n", ret);
>> + dev_err(&pdev->dev, "Failed to allocate video RAM\n");
>> ret = -ENOMEM;
>> goto failed_map;
>> }
>
> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
>
> Are you using this driver, or did you find that problem using some
> static checker?
>
No, I'm not using this driver AFAIK.
It has been spotted by coccinelle with a hand-made script which tries to
find places where error code is used before being initialized.
The script in it-self is not really interesting. It is easy to write and
my own version trigger way to much false positives.
CJ
> Best regards
> Uwe
>
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next prev parent reply other threads:[~2021-05-07 7:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-06 18:57 [PATCH] video: fbdev: imxfb: Fix an error message Christophe JAILLET
2021-05-07 5:05 ` Uwe Kleine-König
2021-05-07 7:11 ` Christophe JAILLET [this message]
2021-05-07 8:20 ` Uwe Kleine-König
2021-05-07 16:34 ` Daniel Vetter
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