[U-Boot] [PATCH] cmd: usb_mass_storage: add protection for block_dev

[Tom Rini]

On Wed, Oct 18, 2017 at 04:03:21PM +0200, Patrick Delaunay wrote:

> solve data abort for the command "ums 0 ubi 0"
> because result of case blk_get_device_part_str() result is OK
> but with block_dev = 0 when CONFIG_CMD_UBIFS is activate and
> ubi volume is mounted
> 
> Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
> ---
> 
>  cmd/usb_mass_storage.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/cmd/usb_mass_storage.c b/cmd/usb_mass_storage.c
> index cfeecb7..c0563ca 100644
> --- a/cmd/usb_mass_storage.c
> +++ b/cmd/usb_mass_storage.c
> @@ -85,7 +85,7 @@ static int ums_init(const char *devtype, const char *devnums_part_str)
>  			partnum = 0;
>  
>  		/* f_mass_storage.c assumes SECTOR_SIZE sectors */
> -		if (block_dev->blksz != SECTOR_SIZE)
> +		if (!block_dev || block_dev->blksz != SECTOR_SIZE)
>  			goto cleanup;
>  
>  		ums_new = realloc(ums, (ums_count + 1) * sizeof(*ums));

Adding in Marek..

-- 
Tom
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