[PATCH v4 04/10] thermal/core: Make cooling device OF node conditional on CONFIG_THERMAL_OF

[Daniel Lezcano <daniel.lezcano@oss.qualcomm.com>]

The device node pointer stored in struct thermal_cooling_device is
only used by the OF-specific thermal code to associate cooling devices
with thermal zones defined in device tree.

Now that OF and non-OF registration paths are separated and non-OF
users no longer rely on devm_thermal_of_cooling_device_register() with
a NULL device node, the np field is no longer required for non-OF
configurations.

Make this field conditional on CONFIG_THERMAL_OF to reduce memory
footprint and better reflect its usage.

Signed-off-by: Daniel Lezcano <daniel.lezcano@oss.qualcomm.com>
---
 include/linux/thermal.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index fc3f4a098370..60e596e7d7ae 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -125,7 +125,6 @@ struct thermal_cooling_device {
 	const char *type;
 	unsigned long max_state;
 	struct device device;
-	struct device_node *np;
 	void *devdata;
 	void *stats;
 	const struct thermal_cooling_device_ops *ops;
@@ -133,6 +132,9 @@ struct thermal_cooling_device {
 	struct mutex lock; /* protect thermal_instances list */
 	struct list_head thermal_instances;
 	struct list_head node;
+#ifdef CONFIG_THERMAL_OF
+	struct device_node *np;
+#endif
 #ifdef CONFIG_THERMAL_DEBUGFS
 	struct thermal_debugfs *debugfs;
 #endif
-- 
2.43.0