drm/radeon/kms: Only VM CS ioctl is supported on SI (v2)

v2: avoid double free.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index 087bd50..5e459a3 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -253,6 +253,13 @@ int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
                return -EINVAL;
        }
 
+       /* we only support VM on SI+ */
+       if ((p->rdev->family >= CHIP_TAHITI) &&
+           ((p->cs_flags & RADEON_CS_USE_VM) == 0)) {
+               DRM_ERROR("VM required on SI+!\n");
+               return -EINVAL;
+       }
+
        if (radeon_cs_get_ring(p, ring, priority))
                return -EINVAL;