To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Signed-off-by: Geliang Tang <geliangt...@gmail.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c 
b/drivers/gpu/drm/i915/i915_debugfs.c
index b77b53b..e04d9a1 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -686,7 +686,7 @@ static void i915_ring_seqno_info(struct seq_file *m,
 
        spin_lock_irq(&b->lock);
        for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {
-               struct intel_wait *w = container_of(rb, typeof(*w), node);
+               struct intel_wait *w = rb_entry(rb, typeof(*w), node);
 
                seq_printf(m, "Waiting (%s): %s [%d] on %x\n",
                           engine->name, w->tsk->comm, w->tsk->pid, w->seqno);
@@ -1336,7 +1336,7 @@ static int i915_hangcheck_info(struct seq_file *m, void 
*unused)
                                          
&dev_priv->gpu_error.missed_irq_rings)));
                spin_lock_irq(&b->lock);
                for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {
-                       struct intel_wait *w = container_of(rb, typeof(*w), 
node);
+                       struct intel_wait *w = rb_entry(rb, typeof(*w), node);
 
                        seq_printf(m, "\t%s [%d] waiting for %x\n",
                                   w->tsk->comm, w->tsk->pid, w->seqno);
@@ -3252,7 +3252,7 @@ static int i915_engine_info(struct seq_file *m, void 
*unused)
 
                spin_lock_irq(&b->lock);
                for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {
-                       struct intel_wait *w = container_of(rb, typeof(*w), 
node);
+                       struct intel_wait *w = rb_entry(rb, typeof(*w), node);
 
                        seq_printf(m, "\t%s [%d] waiting for %x\n",
                                   w->tsk->comm, w->tsk->pid, w->seqno);
-- 
2.9.3

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