drm/i915: add runtime PM get/put call in i915_execlists

Otherwise we will get WARNs when we read context status registers and
the machine is suspended.

Testcase: igt/pm_rpm/debugfs-read
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 1e7a7c68deb7..e60d5c2f4a35 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1848,6 +1848,8 @@ static int i915_execlists(struct seq_file *m, void *data)
         if (ret)
                 return ret;
 
+        intel_runtime_pm_get(dev_priv);
+
         for_each_ring(ring, dev_priv, ring_id) {
                 struct intel_ctx_submit_request *head_req = NULL;
                 int count = 0;
@@ -1899,6 +1901,7 @@ static int i915_execlists(struct seq_file *m, void *data)
                 seq_putc(m, '\n');
         }
 
+        intel_runtime_pm_put(dev_priv);
         mutex_unlock(&dev->struct_mutex);
 
         return 0;