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Commit 7f905761 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

sysfs: add BIN_ATTR_WO() macro 



This variant was missing from sysfs.h, I guess no one noticed it before.

Turns out the powerpc secure variable code can use it, so add it to the
tree for it, and potentially others to take advantage of, instead of
open-coding it.

Reported-by: default avatarNayna Jain <nayna@linux.ibm.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20190826150153.GD18418@kroah.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d9430f96

include/linux/sysfs.h

+9 −0
Original line number Diff line number Diff line
@@ -196,6 +196,12 @@ struct bin_attribute { 
	.size	= _size,						\

}



#define __BIN_ATTR_WO(_name) {						\

	.attr	= { .name = __stringify(_name), .mode = 0200 },		\

	.store	= _name##_store,					\

	.size	= _size,						\

}



#define __BIN_ATTR_RW(_name, _size)					\

	__BIN_ATTR(_name, 0644, _name##_read, _name##_write, _size)
@@ -208,6 +214,9 @@ struct bin_attribute bin_attr_##_name = __BIN_ATTR(_name, _mode, _read, \ 
#define BIN_ATTR_RO(_name, _size)					\

struct bin_attribute bin_attr_##_name = __BIN_ATTR_RO(_name, _size)



#define BIN_ATTR_WO(_name, _size)					\

struct bin_attribute bin_attr_##_name = __BIN_ATTR_WO(_name, _size)



#define BIN_ATTR_RW(_name, _size)					\

struct bin_attribute bin_attr_##_name = __BIN_ATTR_RW(_name, _size)