On Mon, Feb 01, 2021 at 03:28:54PM +0300, Dan Carpenter wrote:
> The "desc" pointer can't possibly be NULL here. If we can't find the
> correct "desc" then tt points to the last element of the
> fsl_mc_accepted_cmds[] array. Fix this by testing if
> "i == FSL_MC_NUM_ACCEPTED_CMDS" instead.
>
> Fixes: 2cf1e703f066 ("bus: fsl-mc: add fsl-mc userspace support")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Acked-by: Ioana Ciornei <ioana.ciornei@xxxxxxx>
Thanks!
> ---
> drivers/bus/fsl-mc/fsl-mc-uapi.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/bus/fsl-mc/fsl-mc-uapi.c b/drivers/bus/fsl-mc/fsl-mc-uapi.c
> index eeb988c9f4bb..bdcd9d983a78 100644
> --- a/drivers/bus/fsl-mc/fsl-mc-uapi.c
> +++ b/drivers/bus/fsl-mc/fsl-mc-uapi.c
> @@ -338,7 +338,7 @@ static int fsl_mc_command_check(struct fsl_mc_device *mc_dev,
> if ((cmdid & desc->cmdid_mask) == desc->cmdid_value)
> break;
> }
> - if (!desc) {
> + if (i == FSL_MC_NUM_ACCEPTED_CMDS) {
> dev_err(&mc_dev->dev, "MC command 0x%04x: cmdid not accepted\n", cmdid);
> return -EACCES;
> }
> --
> 2.29.2
>
