From: Greg Kroah-Hartman Date: Fri, 23 Aug 2013 22:02:56 +0000 (-0700) Subject: driver core: create write-only attribute macros for devices and drivers X-Git-Tag: firefly_0821_release~3680^2~19^2~3^2~2^2~19 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=54d37488baccb0b31610458ac9833591b76de1e4;p=firefly-linux-kernel-4.4.55.git driver core: create write-only attribute macros for devices and drivers This creates the macros DRIVER_ATTR_WO() and DEVICE_ATTR_WO() for write-only attributes for drivers and devices. Signed-off-by: Greg Kroah-Hartman (cherry picked from commit 25d134e51f990962ecb54e5449c97b82f818ab30) Signed-off-by: Mathieu Poirier --- diff --git a/include/linux/device.h b/include/linux/device.h index de1d2860fca5..ddb4a1732d20 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -263,6 +263,8 @@ struct driver_attribute { struct driver_attribute driver_attr_##_name = __ATTR_RW(_name) #define DRIVER_ATTR_RO(_name) \ struct driver_attribute driver_attr_##_name = __ATTR_RO(_name) +#define DRIVER_ATTR_WO(_name) \ + struct driver_attribute driver_attr_##_name = __ATTR_WO(_name) extern int __must_check driver_create_file(struct device_driver *driver, const struct driver_attribute *attr); @@ -518,6 +520,8 @@ ssize_t device_store_bool(struct device *dev, struct device_attribute *attr, struct device_attribute dev_attr_##_name = __ATTR_RW(_name) #define DEVICE_ATTR_RO(_name) \ struct device_attribute dev_attr_##_name = __ATTR_RO(_name) +#define DEVICE_ATTR_WO(_name) \ + struct device_attribute dev_attr_##_name = __ATTR_WO(_name) #define DEVICE_ULONG_ATTR(_name, _mode, _var) \ struct dev_ext_attribute dev_attr_##_name = \ { __ATTR(_name, _mode, device_show_ulong, device_store_ulong), &(_var) }