[PATCH] drivers/xen: use helper macro __ATTR_RW

[zhanglianjie]

Use helper macro __ATTR_RW to define HYPERVISOR_ATTR_RW to make code more clear.
Minor readability improvement.

Signed-off-by: zhanglianjie <zhanglianjie@xxxxxxxxxxxxx>

diff --git a/drivers/xen/sys-hypervisor.c b/drivers/xen/sys-hypervisor.c
index feb1d16252e7..fcb0792f090e 100644
--- a/drivers/xen/sys-hypervisor.c
+++ b/drivers/xen/sys-hypervisor.c
@@ -22,11 +22,10 @@
 #endif

 #define HYPERVISOR_ATTR_RO(_name) \
-static struct hyp_sysfs_attr  _name##_attr = __ATTR_RO(_name)
+static struct hyp_sysfs_attr _name##_attr = __ATTR_RO(_name)

 #define HYPERVISOR_ATTR_RW(_name) \
-static struct hyp_sysfs_attr _name##_attr = \
-	__ATTR(_name, 0644, _name##_show, _name##_store)
+static struct hyp_sysfs_attr _name##_attr = __ATTR_RW(_name)

 struct hyp_sysfs_attr {
 	struct attribute attr;
--
2.20.1