[PATCH 23/26] drm/radeon: add missing locking to fence debugfs function

[Christian König]

Signed-off-by: Christian K?nig <deathsimple at vodafone.de>
---
 drivers/gpu/drm/radeon/radeon_fence.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_fence.c 
b/drivers/gpu/drm/radeon/radeon_fence.c
index 66e6ee0..09e13e3 100644
--- a/drivers/gpu/drm/radeon/radeon_fence.c
+++ b/drivers/gpu/drm/radeon/radeon_fence.c
@@ -492,8 +492,10 @@ static int radeon_debugfs_fence_info(struct seq_file *m, 
void *data)
        struct drm_device *dev = node->minor->dev;
        struct radeon_device *rdev = dev->dev_private;
        struct radeon_fence *fence;
+       unsigned long irq_flags;
        int i;

+       read_lock_irqsave(&rdev->fence_lock, irq_flags);
        for (i = 0; i < RADEON_NUM_RINGS; ++i) {
                if (!rdev->fence_drv[i].initialized)
                        continue;
@@ -508,6 +510,7 @@ static int radeon_debugfs_fence_info(struct seq_file *m, 
void *data)
                                   fence,  fence->seq);
                }
        }
+       read_unlock_irqrestore(&rdev->fence_lock, irq_flags);
        return 0;
 }

-- 
1.7.5.4