[PATCH 12/30] staging: sync: Reorder sync_fence_release

[John Stultz]

From: Erik Gilling <konkers@xxxxxxxxxxx>

Previously fence's pts were freed before the were the fence was removed from the
global fence list.  This led to a race with the debugfs support where it would
iterate over sync_pts that had been freed.

Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxx>
Cc: Erik Gilling <konkers@xxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Rob Clark <robclark@xxxxxxxxx>
Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Cc: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: Android Kernel Team <kernel-team@xxxxxxxxxxx>
Signed-off-by: Erik Gilling <konkers@xxxxxxxxxxx>
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
---
 drivers/staging/android/sync.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/android/sync.c b/drivers/staging/android/sync.c
index 6739a84..2afbd69 100644
--- a/drivers/staging/android/sync.c
+++ b/drivers/staging/android/sync.c
@@ -520,12 +520,12 @@ static int sync_fence_release(struct inode *inode, struct file *file)
 	struct sync_fence *fence = file->private_data;
 	unsigned long flags;
 
-	sync_fence_free_pts(fence);
-
 	spin_lock_irqsave(&sync_fence_list_lock, flags);
 	list_del(&fence->sync_fence_list);
 	spin_unlock_irqrestore(&sync_fence_list_lock, flags);
 
+	sync_fence_free_pts(fence);
+
 	kfree(fence);
 
 	return 0;
-- 
1.7.10.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/