[PATCH] drm/i915: Return -EPERM when i915_gem_mmap_ioctl handling prime objects

[Tina Zhang]

Prime objects have no backing filp to GEM mmap pages from. So, for Prime
objects, such operation is not permitted.

v1:
- Separate this patch from dma-buf patch set. (Joonas)

Signed-off-by: Tina Zhang <tina.zhang at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 0628fb1..bb9d5ed 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1704,7 +1704,7 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
 	 */
 	if (!obj->base.filp) {
 		i915_gem_object_put(obj);
-		return -EINVAL;
+		return -EPERM;
 	}
 
 	addr = vm_mmap(obj->base.filp, 0, args->size,
-- 
2.7.4