From 11c86db8f052fec64804c19519a8d35958ed8aef Mon Sep 17 00:00:00 2001 From: Daniel Stone Date: Fri, 20 Nov 2015 15:55:34 +0000 Subject: [PATCH] drm/i915/pm: Print offending domain in refcount failure MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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: Daniel Stone Reviewed-by: Ville Syrjälä Acked-by: Jani Nikula Signed-off-by: Imre Deak Link: http://patchwork.freedesktop.org/patch/msgid/1448034934-11926-2-git-send-email-daniels@collabora.com --- drivers/gpu/drm/i915/intel_runtime_pm.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index ec38409242d5..3fa43af94946 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -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);