4.2.8-ckt1 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Lukas Wunner <lukas@xxxxxxxxx>
commit 3c67d839b30c7d6d6ab5c6fddac0f58ec8095d50 upstream.
In its original version, drm_framebuffer_init() returned a negative int
if drm_mode_object_get() failed (f453ba046074, "DRM: add mode setting
support").
This was accidentally disabled by commit 4b096ac10da0 ("drm: revamp
locking around fb creation/destruction"). Thus, drm_framebuffer_init()
pretends success if drm_mode_object_get() failed.
Reinstate the original behaviour. Also fix erroneous kernel-doc of
drm_mode_object_get().
Fixes: 4b096ac10da0 ("drm: revamp locking around fb creation/
destruction")
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: Lukas Wunner <lukas@xxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_crtc.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 4e8d72d..9062bf0c 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -306,8 +306,7 @@ static int drm_mode_object_get_reg(struct drm_device *dev,
* reference counted modeset objects like framebuffers.
*
* Returns:
- * New unique (relative to other objects in @dev) integer identifier for the
- * object.
+ * Zero on success, error code on failure.
*/
int drm_mode_object_get(struct drm_device *dev,
struct drm_mode_object *obj, uint32_t obj_type)
@@ -423,7 +422,7 @@ int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
out:
mutex_unlock(&dev->mode_config.fb_lock);
- return 0;
+ return ret;
}
EXPORT_SYMBOL(drm_framebuffer_init);
--
1.9.1
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