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driver core: add device_{add|remove}_group() helpers

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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>
This commit is contained in:
Dmitry Torokhov 2017-07-19 17:24:32 -07:00 • committed by Greg Kroah-Hartman
parent a7670d425b
commit e323b2dddc
1 changed files with 16 additions and 0 deletions
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16
include/linux/device.h
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@ -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