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driver core: add BUS_ATTR_WO() macro

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Many bus attributes are write-only, so provide a simple macro for that
to be able to match the other driver core attribute macros.

Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2018-07-11 15:20:32 +02:00
commit 8514c470dc
1 changed files with 2 additions and 0 deletions
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2
include/linux/device.h
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@ -55,6 +55,8 @@ struct bus_attribute {
struct bus_attribute bus_attr_##_name = __ATTR_RW(_name)
#define BUS_ATTR_RO(_name) \
struct bus_attribute bus_attr_##_name = __ATTR_RO(_name)
#define BUS_ATTR_WO(_name) \
struct bus_attribute bus_attr_##_name = __ATTR_WO(_name)
extern int __must_check bus_create_file(struct bus_type *,
struct bus_attribute *);