driver core: add device_{add|remove}_group() helpers
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>
diff --git a/include/linux/device.h b/include/linux/device.h
index 10cf209..7698a51 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -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