[PATCH] lib: sparse: Fix error checking for write_sparse_chunk_raw

[Mattijs Korpershoek]

Hi Sean,

Thank you for the patch.

On Thu, Feb 01, 2024 at 13:18, Sean Anderson <sean.anderson at seco.com> wrote:

> The return value of write_sparse_chunk_raw is unsigned, so the existing
> check has no effect. Use IS_ERR_VALUE to detect error instead, which is
> what write_sparse_chunk_raw does itself.
>
> Fixes: 62649165cb0 ("lib: sparse: Make CHUNK_TYPE_RAW buffer aligned")
> Reported-by: Dan Carpenter <dan.carpenter at linaro.org>
> Link: https://lore.kernel.org/u-boot/1b323ec3-59b0-490b-a2f0-fd961dafcf49@moroto.mountain/
> Signed-off-by: Sean Anderson <sean.anderson at seco.com>

Reviewed-by: Mattijs Korpershoek <mkorpershoek at baylibre.com>

> ---
>
>  lib/image-sparse.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/image-sparse.c b/lib/image-sparse.c
> index f8289064692..09225692e9b 100644
> --- a/lib/image-sparse.c
> +++ b/lib/image-sparse.c
> @@ -211,7 +211,7 @@ int write_sparse_image(struct sparse_storage *info,
>  
>  			blks = write_sparse_chunk_raw(info, blk, blkcnt,
>  						      data, response);
> -			if (blks < 0)
> +			if (IS_ERR_VALUE(blks))
>  				return -1;
>  
>  			blk += blks;
> -- 
> 2.35.1.1320.gc452695387.dirty