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[0539/1094] drm/i915: get runtime PM at i915_display_info

Message ID 1413889294-31328-540-git-send-email-dheerajx.s.jamwal@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Dheeraj Jamwal Oct. 21, 2014, 10:52 a.m. UTC 
From: Paulo Zanoni <paulo.r.zanoni@intel.com>

Otherwise we may get some WARNs complaining that we're reading a
register while we're suspended.

Testcase: igt/pm_pc8/debugfs-read
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit b0e5ddf3236bca2c67f7b4454b1c2ba520149c23)

Signed-off-by: Dheeraj Jamwal <dheerajx.s.jamwal@intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c |    3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index e04aaaa..b0f9e00 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2319,9 +2319,11 @@  static int i915_display_info(struct seq_file *m, void *unused)
 {
 	struct drm_info_node *node = (struct drm_info_node *) m->private;
 	struct drm_device *dev = node->minor->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_crtc *crtc;
 	struct drm_connector *connector;
 
+	intel_runtime_pm_get(dev_priv);
 	drm_modeset_lock_all(dev);
 	seq_printf(m, "CRTC info\n");
 	seq_printf(m, "---------\n");
@@ -2349,6 +2351,7 @@  static int i915_display_info(struct seq_file *m, void *unused)
 		intel_connector_info(m, connector);
 	}
 	drm_modeset_unlock_all(dev);
+	intel_runtime_pm_put(dev_priv);
 
 	return 0;
 }