[PATCH 4/7] drm/i915: get runtime PM at i915_display_info

Paulo Zanoni
2014-04-01T17:55:38Z

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>
---
drivers/gpu/drm/i915/i915_debugfs.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 7522f97..23a6516 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;
}
--
1.8.5.3