From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: INAGAKI Hiroshi <musashino.open@gmail.com>, rafal@milecki.pl
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] nvmem: u-boot-env: align endianness of crc32 values
Date: Fri, 11 Nov 2022 17:41:05 +0000 [thread overview]
Message-ID: <57f10c5d-2a71-7f8d-e2ab-6e868d8ba79b@linaro.org> (raw)
In-Reply-To: <20221012155133.287-1-musashino.open@gmail.com>
On 12/10/2022 16:51, INAGAKI Hiroshi wrote:
> This patch fixes crc32 error on Big-Endianness system by conversion of
> calculated crc32 value.
>
> Little-Endianness system:
>
> obtained crc32: Little
> calculated crc32: Little
>
> Big-Endianness system:
>
> obtained crc32: Little
> calculated crc32: Big
>
> log (APRESIA ApresiaLightGS120GT-SS, RTL8382M, Big-Endianness):
>
> [ 8.570000] u_boot_env 18001200.spi:flash@0:partitions:partition@c0000: Invalid calculated CRC32: 0x88cd6f09 (expected: 0x096fcd88)
> [ 8.580000] u_boot_env: probe of 18001200.spi:flash@0:partitions:partition@c0000 failed with error -22
>
> Fixes: f955dc1445069 ("nvmem: add driver handling U-Boot environment variables")
>
> Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
> ---
Applied thanks,
--srini
> v1 -> v2
>
> - add missing cast to __le32 for calculated crc32
> (reported by kernel test robot <lkp@intel.com>)
>
> - add missing "Fixes:" tag
>
> 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 8e72d1bbd649..b5aacf805fc6 100644
> --- a/drivers/nvmem/u-boot-env.c
> +++ b/drivers/nvmem/u-boot-env.c
> @@ -143,7 +143,7 @@ static int u_boot_env_parse(struct u_boot_env *priv)
> crc32_data_len = priv->mtd->size - crc32_data_offset;
> data_len = priv->mtd->size - data_offset;
>
> - calc = crc32(~0, buf + crc32_data_offset, crc32_data_len) ^ ~0L;
> + calc = le32_to_cpu((__le32)crc32(~0, buf + crc32_data_offset, crc32_data_len) ^ ~0L);
> if (calc != crc32) {
> dev_err(dev, "Invalid calculated CRC32: 0x%08x (expected: 0x%08x)\n", calc, crc32);
> err = -EINVAL;
>
> base-commit: 60bbaad38109684b156e21112322e0a922f92cde
next prev parent reply other threads:[~2022-11-11 17:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-12 15:51 [PATCH v2] nvmem: u-boot-env: align endianness of crc32 values INAGAKI Hiroshi
2022-10-17 8:43 ` Rafał Miłecki
2022-11-04 16:43 ` Christian Lamparter
2022-11-11 17:41 ` Srinivas Kandagatla [this message]
2023-01-06 19:15 ` Rafał Miłecki
2023-01-09 9:48 ` Srinivas Kandagatla
2023-01-09 9:52 ` Rafał Miłecki
2023-01-10 13:04 ` INAGAKI Hiroshi
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