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sysfs.h: add BIN_ATTR macro 

This makes it easier to create static binary attributes, which is needed
in a number of drivers, instead of "open coding" them.

Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2013-07-14 16:05:53 -07:00
parent f2f37f58b1
commit e4b63603c2
1 changed files with 9 additions and 0 deletions
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9
include/linux/sysfs.h
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@ -132,6 +132,15 @@ struct bin_attribute {
*/
#define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr)
/* macro to create static binary attributes easier */
#define BIN_ATTR(_name, _mode, _read, _write, _size) \
struct bin_attribute bin_attr_##_name = { \
.attr = {.name = __stringify(_name), .mode = _mode }, \
.read = _read, \
.write = _write, \
.size = _size, \
}
struct sysfs_ops {
ssize_t (*show)(struct kobject *, struct attribute *,char *);
ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t);