Patch "drm/amdgpu: fix amdgpu_sync_resv v2" has been added to the 4.15-stable tree

Patch "drm/amdgpu: fix amdgpu_sync_resv v2" has been added to the 4.15-stable tree

[gregkh]

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

    drm/amdgpu: fix amdgpu_sync_resv v2

to the 4.15-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-amdgpu-fix-amdgpu_sync_resv-v2.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Fri Mar 16 15:11:08 CET 2018
From: "Christian K�nig" <christian.koenig@amd.com>
Date: Fri, 24 Nov 2017 11:41:52 +0100
Subject: drm/amdgpu: fix amdgpu_sync_resv v2

From: "Christian K�nig" <christian.koenig@amd.com>


[ Upstream commit d4b7648d6d1774f961f3f6a758d9b009f1f34f05 ]

Fixes a bug introduced by AMDGPU_GEM_CREATE_EXPLICIT_SYNC. We still need
to wait for pipelined moves in the shared fences list.

v2: fix typo

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Andres Rodriguez <andresx7@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c |    7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
@@ -191,9 +191,6 @@ int amdgpu_sync_resv(struct amdgpu_devic
 	f = reservation_object_get_excl(resv);
 	r = amdgpu_sync_fence(adev, sync, f);
 
-	if (explicit_sync)
-		return r;
-
 	flist = reservation_object_get_list(resv);
 	if (!flist || r)
 		return r;
@@ -212,11 +209,11 @@ int amdgpu_sync_resv(struct amdgpu_devic
 			     (fence_owner == AMDGPU_FENCE_OWNER_VM)))
 				continue;
 
-			/* Ignore fence from the same owner as
+			/* Ignore fence from the same owner and explicit one as
 			 * long as it isn't undefined.
 			 */
 			if (owner != AMDGPU_FENCE_OWNER_UNDEFINED &&
-			    fence_owner == owner)
+			    (fence_owner == owner || explicit_sync))
 				continue;
 		}
 


Patches currently in stable-queue which might be from christian.koenig@amd.com are

queue-4.15/drm-amdgpu-fix-random-missing-of-flr-notify.patch
queue-4.15/drm-amdgpu-fix-amdgpu_sync_resv-v2.patch
queue-4.15/dma-buf-fence-fix-lock-inversion-within-dma-fence-array.patch
queue-4.15/drm-edid-set-eld-connector-type-in-drm_edid_to_eld.patch