[PATCH v2 2/3] drivers/thermal/rcar_gen3_thermal: Create device local ops struct

["Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>]

The callback operations are modified on a driver global level. If one
device tree description do not define interrupts, the set_trips()
operation was disabled globally for all users of the driver.

Fix this by creating a device local copy of the operations structure and
modify the copy depending on what the device can do.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
 drivers/thermal/rcar_gen3_thermal.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/thermal/rcar_gen3_thermal.c b/drivers/thermal/rcar_gen3_thermal.c
index 5a715a58f18b..2dfce4f09631 100644
--- a/drivers/thermal/rcar_gen3_thermal.c
+++ b/drivers/thermal/rcar_gen3_thermal.c
@@ -87,6 +87,7 @@ struct rcar_gen3_thermal_tsc {
 
 struct rcar_gen3_thermal_priv {
 	struct rcar_gen3_thermal_tsc *tscs[TSC_MAX_NUM];
+	struct thermal_zone_device_ops ops;
 	unsigned int num_tscs;
 	void (*thermal_init)(struct rcar_gen3_thermal_tsc *tsc);
 	int ptat[3];
@@ -225,7 +226,7 @@ static int rcar_gen3_thermal_set_trips(struct thermal_zone_device *tz, int low,
 	return 0;
 }
 
-static struct thermal_zone_device_ops rcar_gen3_tz_of_ops = {
+static const struct thermal_zone_device_ops rcar_gen3_tz_of_ops = {
 	.get_temp	= rcar_gen3_thermal_get_temp,
 	.set_trips	= rcar_gen3_thermal_set_trips,
 };
@@ -466,6 +467,7 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
+	priv->ops = rcar_gen3_tz_of_ops;
 	priv->thermal_init = rcar_gen3_thermal_init;
 	if (soc_device_match(r8a7795es1))
 		priv->thermal_init = rcar_gen3_thermal_init_r8a7795es1;
@@ -473,7 +475,7 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, priv);
 
 	if (rcar_gen3_thermal_request_irqs(priv, pdev))
-		rcar_gen3_tz_of_ops.set_trips = NULL;
+		priv->ops.set_trips = NULL;
 
 	pm_runtime_enable(dev);
 	pm_runtime_get_sync(dev);
@@ -508,8 +510,7 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
 	for (i = 0; i < priv->num_tscs; i++) {
 		struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];
 
-		zone = devm_thermal_of_zone_register(dev, i, tsc,
-						     &rcar_gen3_tz_of_ops);
+		zone = devm_thermal_of_zone_register(dev, i, tsc, &priv->ops);
 		if (IS_ERR(zone)) {
 			dev_err(dev, "Sensor %u: Can't register thermal zone\n", i);
 			ret = PTR_ERR(zone);
-- 
2.39.1