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Commit 11c86db8 authored by Daniel Stone's avatar Daniel Stone Committed by Imre Deak
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drm/i915/pm: Print offending domain in refcount failure 



If we experience a refcounting failure in a power domain/well (unref'ing at
least one too many times), log the name of the offending domain or well.

Signed-off-by: default avatarDaniel Stone <daniels@collabora.com>
Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: default avatarJani Nikula <jani.nikula@intel.com>
Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448034934-11926-2-git-send-email-daniels@collabora.com
parent 9895ad03

drivers/gpu/drm/i915/intel_runtime_pm.c

+6 −2
Original line number Diff line number Diff line
@@ -1499,11 +1499,15 @@ void intel_display_power_put(struct drm_i915_private *dev_priv, 


	mutex_lock(&power_domains->lock);



	WARN_ON(!power_domains->domain_use_count[domain]);

	WARN(!power_domains->domain_use_count[domain],

	     "Use count on domain %s is already zero\n",

	     intel_display_power_domain_str(domain));

	power_domains->domain_use_count[domain]--;



	for_each_power_well_rev(i, power_well, BIT(domain), power_domains) {

		WARN_ON(!power_well->count);

		WARN(!power_well->count,

		     "Use count on power well %s is already zero",

		     power_well->name);



		if (!--power_well->count)

			intel_power_well_disable(dev_priv, power_well);