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thermal: Add some error messages

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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>
This commit is contained in:
Amit Kucheria 2019-07-12 02:01:58 +05:30 committed by Zhang Rui
parent 1851799e1d
commit 67eed44b8a
1 changed files with 13 additions and 4 deletions
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17
drivers/thermal/thermal_core.c
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@ -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);