[PATCH 15/22] gpu: host1x: Forbid RESTART opcode in the firewall

[Mikko Perttunen]

Reviewed-by: Mikko Perttunen <mperttunen at nvidia.com>

On 05/23/2017 03:14 AM, Dmitry Osipenko wrote:
> The RESTART opcode terminates the gather and restarts the CDMA fetching from
> a specified word << 2 relative to the CDMA start address. That shouldn't be
> allowed to be done by userspace.
> 
> Signed-off-by: Dmitry Osipenko <digetx at gmail.com>
> Reviewed-by: Erik Faye-Lund <kusmabite at gmail.com>
> ---
>   drivers/gpu/host1x/job.c | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/gpu/host1x/job.c b/drivers/gpu/host1x/job.c
> index 1a1568e64ba8..cf335c5979e2 100644
> --- a/drivers/gpu/host1x/job.c
> +++ b/drivers/gpu/host1x/job.c
> @@ -497,7 +497,6 @@ static int validate(struct host1x_firewall *fw, struct host1x_job_gather *g)
>   				goto out;
>   			break;
>   		case 4:
> -		case 5:
>   		case 14:
>   			break;
>   		default:
>