diff options
-rw-r--r-- | drivers/platform/x86/firmware_attributes_class.c | 40 | ||||
-rw-r--r-- | drivers/platform/x86/firmware_attributes_class.h | 1 |
2 files changed, 15 insertions, 26 deletions
diff --git a/drivers/platform/x86/firmware_attributes_class.c b/drivers/platform/x86/firmware_attributes_class.c index cbc56e5db592..87672c49e86a 100644 --- a/drivers/platform/x86/firmware_attributes_class.c +++ b/drivers/platform/x86/firmware_attributes_class.c @@ -2,47 +2,35 @@ /* Firmware attributes class helper module */ -#include <linux/mutex.h> #include <linux/module.h> #include "firmware_attributes_class.h" -static DEFINE_MUTEX(fw_attr_lock); -static int fw_attr_inuse; - -static const struct class firmware_attributes_class = { +const struct class firmware_attributes_class = { .name = "firmware-attributes", }; +EXPORT_SYMBOL_GPL(firmware_attributes_class); + +static __init int fw_attributes_class_init(void) +{ + return class_register(&firmware_attributes_class); +} +module_init(fw_attributes_class_init); + +static __exit void fw_attributes_class_exit(void) +{ + class_unregister(&firmware_attributes_class); +} +module_exit(fw_attributes_class_exit); int fw_attributes_class_get(const struct class **fw_attr_class) { - int err; - - mutex_lock(&fw_attr_lock); - if (!fw_attr_inuse) { /*first time class is being used*/ - err = class_register(&firmware_attributes_class); - if (err) { - mutex_unlock(&fw_attr_lock); - return err; - } - } - fw_attr_inuse++; *fw_attr_class = &firmware_attributes_class; - mutex_unlock(&fw_attr_lock); return 0; } EXPORT_SYMBOL_GPL(fw_attributes_class_get); int fw_attributes_class_put(void) { - mutex_lock(&fw_attr_lock); - if (!fw_attr_inuse) { - mutex_unlock(&fw_attr_lock); - return -EINVAL; - } - fw_attr_inuse--; - if (!fw_attr_inuse) /* No more consumers */ - class_unregister(&firmware_attributes_class); - mutex_unlock(&fw_attr_lock); return 0; } EXPORT_SYMBOL_GPL(fw_attributes_class_put); diff --git a/drivers/platform/x86/firmware_attributes_class.h b/drivers/platform/x86/firmware_attributes_class.h index 8e0f47cfdf92..ef6c3764a834 100644 --- a/drivers/platform/x86/firmware_attributes_class.h +++ b/drivers/platform/x86/firmware_attributes_class.h @@ -7,6 +7,7 @@ #include <linux/device/class.h> +extern const struct class firmware_attributes_class; int fw_attributes_class_get(const struct class **fw_attr_class); int fw_attributes_class_put(void); |