[3.19.y-ckt stable] Patch "drm: Fix return value of drm_framebuffer_init()" has been added to staging queue
Kamal Mostafa
kamal at canonical.com
Mon Nov 30 22:10:45 UTC 2015
This is a note to let you know that I have just added a patch titled
drm: Fix return value of drm_framebuffer_init()
to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue
This patch is scheduled to be released in version 3.19.8-ckt11.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.19.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
------
>From edcfd0c709fb51bef07d2ea84361865fa6d35a18 Mon Sep 17 00:00:00 2001
From: Lukas Wunner <lukas at wunner.de>
Date: Thu, 15 Oct 2015 11:56:56 +0200
Subject: drm: Fix return value of drm_framebuffer_init()
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 at ffwll.ch>
Signed-off-by: Lukas Wunner <lukas at wunner.de>
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
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 2d06f91..f2cd2bf 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -312,8 +312,7 @@ 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)
@@ -427,7 +426,7 @@ 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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