[PATCH 1/2] ACPI: platform_profile: Add devm_platform_profile_register()

[Kurt Borja <kuurtb@gmail.com>]

Platform profile's lifetime is usually tied to a device's lifetime,
therefore add a device managed version of platform_profile_register().

Signed-off-by: Kurt Borja <kuurtb@gmail.com>
---
 drivers/acpi/platform_profile.c  | 27 +++++++++++++++++++++++++++
 include/linux/platform_profile.h |  2 +-
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
index 75a1415190ac..d0c88decef8b 100644
--- a/drivers/acpi/platform_profile.c
+++ b/drivers/acpi/platform_profile.c
@@ -519,6 +519,33 @@ int platform_profile_remove(struct platform_profile_handler *pprof)
 }
 EXPORT_SYMBOL_GPL(platform_profile_remove);
 
+static void devm_platform_profile_release(struct device *dev, void *res)
+{
+	platform_profile_remove(*(struct platform_profile_handler **) res);
+}
+
+int devm_platform_profile_register(struct platform_profile_handler *pprof)
+{
+	struct platform_profile_handler **dr;
+	int ret;
+
+	dr = devres_alloc(devm_platform_profile_release, sizeof(*dr), GFP_KERNEL);
+	if (!dr)
+		return -ENOMEM;
+
+	ret = platform_profile_register(pprof);
+	if (ret) {
+		devres_free(dr);
+		return ret;
+	}
+
+	*dr = pprof;
+	devres_add(pprof->dev, dr);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(devm_platform_profile_register);
+
 static int __init platform_profile_init(void)
 {
 	int err;
diff --git a/include/linux/platform_profile.h b/include/linux/platform_profile.h
index 0682bb4c57e5..d8114435865b 100644
--- a/include/linux/platform_profile.h
+++ b/include/linux/platform_profile.h
@@ -41,7 +41,7 @@ struct platform_profile_handler {
 
 int platform_profile_register(struct platform_profile_handler *pprof);
 int platform_profile_remove(struct platform_profile_handler *pprof);
+int devm_platform_profile_register(struct platform_profile_handler *pprof);
 int platform_profile_cycle(void);
 void platform_profile_notify(struct platform_profile_handler *pprof);
-
 #endif  /*_PLATFORM_PROFILE_H_*/
-- 
2.47.1