[PATCH 11/12] thermal: qoriq: Be more strict when parsing "thermal-sensors"

From: Andrey Smirnov
Date: Mon Feb 18 2019 - 14:12:20 EST


As per Documentation/devicetree/bindings/thermal/qoriq-thermal.txt
thermal-sensor-cells _must_ be 1, so there is no reason to be more
lenient in the code and treat the absence of argument in
thermal-sensors specifier as a valid DT code. Drop that special case
to simplify sensor ID retreival code.

Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
Cc: Chris Healy <cphealy@xxxxxxxxx>
Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Cc: Zhang Rui <rui.zhang@xxxxxxxxx>
Cc: Eduardo Valentin <edubezval@xxxxxxxxx>
Cc: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Cc: linux-imx@xxxxxxx
Cc: linux-pm@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
drivers/thermal/qoriq_thermal.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c
index d4f5e180e1ee..f746c62789b0 100644
--- a/drivers/thermal/qoriq_thermal.c
+++ b/drivers/thermal/qoriq_thermal.c
@@ -82,14 +82,14 @@ static int qoriq_tmu_get_sensor_id(void)
goto out;
}

- if (sensor_specs.args_count >= 1) {
- id = sensor_specs.args[0];
- WARN(sensor_specs.args_count > 1,
- "%pOFn: too many cells in sensor specifier %d\n",
- sensor_specs.np, sensor_specs.args_count);
- } else {
- id = 0;
+ if (sensor_specs.args_count != 1) {
+ pr_err("%pOFn: Invalid number of cells in sensor specifier %d\n",
+ sensor_specs.np, sensor_specs.args_count);
+ id = -EINVAL;
+ goto out;
}
+
+ id = sensor_specs.args[0];
out:
of_node_put(np);
of_node_put(sensor_np);
--
2.20.1