This is a note to let you know that I've just added the patch titled
drm/ttm: Fix spinlock imbalance
to the 3.4-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-ttm-fix-spinlock-imbalance.patch
and it can be found in the queue-3.4 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 a8ff3ee211fccf708e1911bbc096625453ebf759 Mon Sep 17 00:00:00 2001
From: Thomas Hellstrom <thellst...@vmware.com>
Date: Fri, 1 Jun 2012 15:39:11 +0200
Subject: drm/ttm: Fix spinlock imbalance
From: Thomas Hellstrom <thellst...@vmware.com>
commit a8ff3ee211fccf708e1911bbc096625453ebf759 upstream.
This imbalance may cause hangs when TTM is trying to swap out a buffer
that is already on the delayed delete list.
Signed-off-by: Thomas Hellstrom <thellst...@vmware.com>
Reviewed-by: Jakob Bornecrantz <ja...@vmware.com>
Signed-off-by: Dave Airlie <airl...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/gpu/drm/ttm/ttm_bo.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1821,6 +1821,7 @@ static int ttm_bo_swapout(struct ttm_mem
spin_unlock(&glob->lru_lock);
(void) ttm_bo_cleanup_refs(bo, false, false, false);
kref_put(&bo->list_kref, ttm_bo_release_list);
+ spin_lock(&glob->lru_lock);
continue;
}
Patches currently in stable-queue which might be from thellst...@vmware.com are
queue-3.4/drm-vmwgfx-fix-nasty-write-past-alloced-memory-area.patch
queue-3.4/drm-ttm-fix-spinlock-imbalance.patch
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