[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <1200fe58-72de-5372-a0f0-2ac93b6aeccc@pengutronix.de>
Date: Mon, 29 Aug 2022 08:25:58 +0200
From: Ahmad Fatoum <a.fatoum@...gutronix.de>
To: Rafał Miłecki <zajec5@...il.com>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc: Tom Rini <trini@...sulko.com>,
linux-arm-kernel@...ts.infradead.org, u-boot@...ts.denx.de,
linux-kernel@...r.kernel.org,
Rafał Miłecki <rafal@...ecki.pl>,
kernel test robot <lkp@...el.com>
Subject: Re: [PATCH] nvmem: u-boot-env: fix crc32 casting type
Hello Rafał,
On 18.08.22 06:38, Rafał Miłecki wrote:
> From: Rafał Miłecki <rafal@...ecki.pl>
>
> This fixes:
> drivers/nvmem/u-boot-env.c:141:17: sparse: sparse: cast to restricted __le32
>
> Reported-by: kernel test robot <lkp@...el.com>
> Fixes: f955dc1445069 ("nvmem: add driver handling U-Boot environment variables")
> Signed-off-by: Rafał Miłecki <rafal@...ecki.pl>
> ---
> drivers/nvmem/u-boot-env.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/nvmem/u-boot-env.c b/drivers/nvmem/u-boot-env.c
> index 9b9abfb8f187..fb993ef4249f 100644
> --- a/drivers/nvmem/u-boot-env.c
> +++ b/drivers/nvmem/u-boot-env.c
> @@ -138,7 +138,7 @@ static int u_boot_env_parse(struct u_boot_env *priv)
> data_offset = offsetof(struct u_boot_env_image_redundant, data);
> break;
> }
> - crc32 = le32_to_cpu(*(uint32_t *)(buf + crc32_offset));
> + crc32 = le32_to_cpu(*(__le32 *)(buf + crc32_offset));
I had to do a double take to make sure alignment is not violated.
It's not, because crc32_offset is always zero.
How about rewriting this as
/* CRC32 is always at offset 0 */
crc32 = le32_to_cpup(buf);
To make the alignment clear to the reader?
> crc32_data_len = priv->mtd->size - crc32_data_offset;
> data_len = priv->mtd->size - data_offset;
>
Cheers,
Ahmad
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
Powered by blists - more mailing lists