driver core: add device_{add|remove}_group() helpers (e323b2dd) · Commits · 戴 / test

We have helpers that work with NULL terminated array of groups, but many drivers only create a single supplemental group, and do not want to declare a group array. Let's provide them with helpers working with a single group. Signed-off-by:

Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by:

Greg Kroah-Hartman <gregkh@linuxfoundation.org>

include/linux/device.h

+16 −0

Original line number	Diff line number	Diff line
		@@ -1205,6 +1205,22 @@ extern int __must_check device_add_groups(struct device *dev,
		extern void device_remove_groups(struct device *dev,
		const struct attribute_group **groups);

		static inline int __must_check device_add_group(struct device *dev,
		const struct attribute_group *grp)
		{
		const struct attribute_group *groups[] = { grp, NULL };

		return device_add_groups(dev, groups);
		}

		static inline void device_remove_group(struct device *dev,
		const struct attribute_group *grp)
		{
		const struct attribute_group *groups[] = { grp, NULL };

		return device_remove_groups(dev, groups);
		}

		/*
		* Platform "fixup" functions - allow the platform to have their say
		* about devices and actions that the general device layer doesn't

Admin message