Patch "drm/radeon: Fail fb creation from imported dma-bufs." has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

drm/radeon: Fail fb creation from imported dma-bufs.

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
drm-radeon-fail-fb-creation-from-imported-dma-bufs.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Christopher James Halse Rogers <[email protected]>
Date: Wed, 29 Mar 2017 15:00:54 +1100
Subject: drm/radeon: Fail fb creation from imported dma-bufs.

From: Christopher James Halse Rogers <[email protected]>

[ Upstream commit a294043b2fbd8de69d161457ed0c7a4026bbfa5a ]

Any use of the framebuffer will migrate it to VRAM, which is not sensible for an imported dma-buf.

v2: Use DRM_DEBUG_KMS to prevent userspace accidentally spamming dmesg.

---
 drivers/gpu/drm/radeon/radeon_display.c |    6 ++++++
 1 file changed, 6 insertions(+)

@@ -1374,6 +1374,12 @@ radeon_user_framebuffer_create(struct dr
 		return ERR_PTR(-ENOENT);
 	}
 
+	/* Handle is imported dma-buf, so cannot be migrated to VRAM for scanout */
+	if (obj->import_attach) {
+		DRM_DEBUG_KMS("Cannot create framebuffer from imported dma_buf\n");
+		return ERR_PTR(-EINVAL);
+	}
+
 	radeon_fb = kzalloc(sizeof(*radeon_fb), GFP_KERNEL);
 	if (radeon_fb == NULL) {
 		drm_gem_object_unreference_unlocked(obj);

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/drm-amdgpu-fail-fb-creation-from-imported-dma-bufs.-v2.patch queue-4.4/drm-radeon-fail-fb-creation-from-imported-dma-bufs.patch