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);  | 
