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>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index 087bd5053774..5e459a3a872d 100644
--- 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;