From: Amit Kucheria <amit.kucheria@linaro.org>
Date: Thu, 11 Jul 2019 20:31:58 +0000 (+0530)
Subject: thermal: Add some error messages
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=67eed44b8a8ae7ca1a1a77c64d2c4815f00e361b;p=openwrt%2Fstaging%2Fblogic.git

thermal: Add some error messages

When registering a thermal zone device, we currently return -EINVAL in
four cases. This makes it a little hard to debug the real cause of the
failure.

Print some error messages to make it easier for developer to figure out
what happened.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 892f3548ad6d..d4481cc8958f 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -1245,17 +1245,26 @@ thermal_zone_device_register(const char *type, int trips, int mask,
 	int count;
 	struct thermal_governor *governor;
 
-	if (!type || strlen(type) == 0)
+	if (!type || strlen(type) == 0) {
+		pr_err("Error: No thermal zone type defined\n");
 		return ERR_PTR(-EINVAL);
+	}
 
-	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
+	if (type && strlen(type) >= THERMAL_NAME_LENGTH) {
+		pr_err("Error: Thermal zone name (%s) too long, should be under %d chars\n",
+		       type, THERMAL_NAME_LENGTH);
 		return ERR_PTR(-EINVAL);
+	}
 
-	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
+	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips) {
+		pr_err("Error: Incorrect number of thermal trips\n");
 		return ERR_PTR(-EINVAL);
+	}
 
-	if (!ops)
+	if (!ops) {
+		pr_err("Error: Thermal zone device ops not defined\n");
 		return ERR_PTR(-EINVAL);
+	}
 
 	if (trips > 0 && (!ops->get_trip_type || !ops->get_trip_temp))
 		return ERR_PTR(-EINVAL);