drm/ttm: Remove the CAP_SYS_ADMIN requirement for bo pinning

This breaks vmwgfx non-root EGL clients and is a remnant from the
TTM user-space interface. This test should be done in the driver.
Replace the remaining placement test with a BUG_ON, since triggering
it is a driver bug.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 340dfb11959d3f3d40067972a7d1cf8e54e1dd7c..ce464579c48567bf77fb16c7a7d46fa088afff5f 100644 (file)
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1119,35 +1119,9 @@ EXPORT_SYMBOL(ttm_bo_validate);
 int ttm_bo_check_placement(struct ttm_buffer_object *bo,
                                struct ttm_placement *placement)
 {
-       int i;
+       BUG_ON((placement->fpfn || placement->lpfn) &&
+              (bo->mem.num_pages > (placement->lpfn - placement->fpfn)));
 
-       if (placement->fpfn || placement->lpfn) {
-               if (bo->mem.num_pages > (placement->lpfn - placement->fpfn)) {
-                       printk(KERN_ERR TTM_PFX "Page number range to small "
-                               "Need %lu pages, range is [%u, %u]\n",
-                               bo->mem.num_pages, placement->fpfn,
-                               placement->lpfn);
-                       return -EINVAL;
-               }
-       }
-       for (i = 0; i < placement->num_placement; i++) {
-               if (!capable(CAP_SYS_ADMIN)) {
-                       if (placement->placement[i] & TTM_PL_FLAG_NO_EVICT) {
-                               printk(KERN_ERR TTM_PFX "Need to be root to "
-                                       "modify NO_EVICT status.\n");
-                               return -EINVAL;
-                       }
-               }
-       }
-       for (i = 0; i < placement->num_busy_placement; i++) {
-               if (!capable(CAP_SYS_ADMIN)) {
-                       if (placement->busy_placement[i] & TTM_PL_FLAG_NO_EVICT) {
-                               printk(KERN_ERR TTM_PFX "Need to be root to "
-                                       "modify NO_EVICT status.\n");
-                               return -EINVAL;
-                       }
-               }
-       }
        return 0;
 }