[igt-dev] [PATCH i-g-t 1/2] tests/i915_pm_dc: Dump power_domain_info on DC test failures

[Anshuman Gupta <anshuman.gupta@intel.com>]

Dump i915_power_domain_info debugfs attribute on DC state
test failures, it will help to identify culprit, which
causes non zero refcount for "DC off" power well.

Cc: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
---
 tests/i915/i915_pm_dc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tests/i915/i915_pm_dc.c b/tests/i915/i915_pm_dc.c
index afcc10bc..4bca8559 100644
--- a/tests/i915/i915_pm_dc.c
+++ b/tests/i915/i915_pm_dc.c
@@ -206,11 +206,13 @@ static bool dc_state_wait_entry(int debugfs_fd, int dc_flag, int prev_dc_count)
 static void check_dc_counter(int debugfs_fd, int dc_flag, uint32_t prev_dc_count)
 {
 	char tmp[64];
+	char file[64] = "i915_power_domain_info";
 
 	snprintf(tmp, sizeof(tmp), "%s", dc_flag & CHECK_DC3CO ? "DC3CO" :
 		(dc_flag & CHECK_DC5 ? "DC5" : "DC6"));
 	igt_assert_f(dc_state_wait_entry(debugfs_fd, dc_flag, prev_dc_count),
-		     "%s state is not achieved\n", tmp);
+		     "%s state is not achieved\n%s:\n%s\n",
+		     tmp, file, igt_sysfs_get(debugfs_fd, file));
 }
 
 static void setup_videoplayback(data_t *data)
-- 
2.24.0

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