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Subject[PATCH v7 11/12] thermal_hwmon: Add devres wrapper for thermal_add_hwmon_sysfs()
Date
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
---
drivers/thermal/thermal_hwmon.c | 28 ++++++++++++++++++++++++++++
drivers/thermal/thermal_hwmon.h | 7 +++++++
2 files changed, 35 insertions(+)

diff --git a/drivers/thermal/thermal_hwmon.c b/drivers/thermal/thermal_hwmon.c
index dd5d8ee37928..c8d2620f2e42 100644
--- 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 a160b9d62dd0..1a9d65f6a6a8 100644
--- 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)
{
--
2.21.0
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