[PATCH 1/1] of: unittest: config option - print pass message at same level as fail

[frowand.list@gmail.com]

From: Frank Rowand <frank.rowand@sony.com>

Printing the devicetree unittest pass message for each passed test
creates much console verbosity.  The existing pass messages are
printed at loglevel KERN_DEBUG so they will not print by default.

The test community expects either a pass or a fail message for each
test in a test suite.  The messages are typically post-processed to
report pass/fail results.

The pass messages can currently be reported by enabling KERN_DEBUG
loglevel for the console, but this also results in other additional
messages.  Create OF_UNITTEST_SHOW_PASS to enable printing the pass
messages at the same loglevel as the fail messages.

Signed-off-by: Frank Rowand <frank.rowand@sony.com>
---
 drivers/of/Kconfig    | 10 ++++++++++
 drivers/of/unittest.c |  5 ++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index 80b5fd44ab1c..6ad05df4f7d4 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -25,6 +25,16 @@ config OF_UNITTEST
 
 	  If unsure, say N here, but this option is safe to enable.
 
+config OF_UNITTEST_SHOW_PASS
+	bool "Device Tree runtime unit tests, report each pass"
+	depends on OF_UNITTEST
+	help
+	  The messages reporting an individual test pass are normally
+	  printed at loglevel KERN_DEBUG.  Enable this option to print
+	  the PASS messages at the same loglevel as the FAIL messages.
+
+	  If unsure, say N here, but this option is safe to enable.
+
 config OF_ALL_DTBS
 	bool "Build all Device Tree Blobs"
 	depends on COMPILE_TEST
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 70992103c07d..efcec1c6c895 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -44,7 +44,10 @@ static struct unittest_results {
 		pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
 	} else { \
 		unittest_results.passed++; \
-		pr_debug("pass %s():%i\n", __func__, __LINE__); \
+		if (IS_ENABLED(CONFIG_OF_UNITTEST_SHOW_PASS)) \
+			pr_err("pass %s():%i\n", __func__, __LINE__); \
+		else \
+			pr_debug("pass %s():%i\n", __func__, __LINE__); \
 	} \
 	failed; \
 })
-- 
Frank Rowand <frank.rowand@sony.com>