The get-reset-stats ioctls wasn't waiting for a pending reset before
reporting its statistics, and so was ignoring a hang generated by the
context that should have been reported against said context.

Signed-off-by: Chris Wilson <[email protected]>
---
 drivers/gpu/drm/i915/i915_gem_context.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_context.c 
b/drivers/gpu/drm/i915/i915_gem_context.c
index f3c76ca6b411..2aedd188473d 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -1056,7 +1056,7 @@ int i915_gem_context_reset_stats_ioctl(struct drm_device 
*dev,
        if (args->ctx_id == DEFAULT_CONTEXT_HANDLE && !capable(CAP_SYS_ADMIN))
                return -EPERM;
 
-       ret = mutex_lock_interruptible(&dev->struct_mutex);
+       ret = i915_mutex_lock_interruptible(dev);
        if (ret)
                return ret;
 
-- 
2.8.1

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