thermal_hwmon: Add devres wrapper for thermal_add_hwmon_sysfs()

Add devres wrapper for thermal_add_hwmon_sysfs() to simplify driver
code.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Angus Ainslie (Purism) <angus@akkea.ca>
Cc: linux-imx@nxp.com
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20191210164153.10463-12-andrew.smirnov@gmail.com

diff --git a/drivers/thermal/thermal_hwmon.c b/drivers/thermal/thermal_hwmon.c
index dd5d8ee..c8d2620 100644 (file)
--- a/drivers/thermal/thermal_hwmon.c
+++ b/drivers/thermal/thermal_hwmon.c
@@ -248,3 +248,31 @@ void thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
        kfree(hwmon);
 }
 EXPORT_SYMBOL_GPL(thermal_remove_hwmon_sysfs);
+
+static void devm_thermal_hwmon_release(struct device *dev, void *res)
+{
+       thermal_remove_hwmon_sysfs(*(struct thermal_zone_device **)res);
+}
+
+int devm_thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
+{
+       struct thermal_zone_device **ptr;
+       int ret;
+
+       ptr = devres_alloc(devm_thermal_hwmon_release, sizeof(*ptr),
+                          GFP_KERNEL);
+       if (!ptr)
+               return -ENOMEM;
+
+       ret = thermal_add_hwmon_sysfs(tz);
+       if (ret) {
+               devres_free(ptr);
+               return ret;
+       }
+
+       *ptr = tz;
+       devres_add(&tz->device, ptr);
+
+       return ret;
+}
+EXPORT_SYMBOL_GPL(devm_thermal_add_hwmon_sysfs);

diff --git a/drivers/thermal/thermal_hwmon.h b/drivers/thermal/thermal_hwmon.h
index a160b9d..1a9d65f 100644 (file)
--- a/drivers/thermal/thermal_hwmon.h
+++ b/drivers/thermal/thermal_hwmon.h
@@ -17,6 +17,7 @@
 
 #ifdef CONFIG_THERMAL_HWMON
 int thermal_add_hwmon_sysfs(struct thermal_zone_device *tz);
+int devm_thermal_add_hwmon_sysfs(struct thermal_zone_device *tz);
 void thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz);
 #else
 static inline int
@@ -25,6 +26,12 @@ thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
        return 0;
 }
 
+static inline int
+devm_thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
+{
+       return 0;
+}
+
 static inline void
 thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
 {