Commit 66c98986 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

greybus: kernel_ver.h: add sysfs_create_groups() and sysfs_remove_groups() 



These functions showed up in 3.12 or so, and we are stuck on 3.10 for
various reasons, so provide backports in kernel_ver.h so that we can
rely on these functions.

Signed-off-by: default avatarGreg Kroah-Hartman <greg@kroah.com>
parent 7a51b936

drivers/staging/greybus/kernel_ver.h

+33 −0
Original line number Diff line number Diff line
@@ -78,6 +78,8 @@ static inline void gb_gpiochip_remove(struct gpio_chip *chip) 
 * it here.

 */

#if LINUX_VERSION_CODE < KERNEL_VERSION(3,11,0)

#include <linux/sysfs.h>



#define ATTRIBUTE_GROUPS(name)					\

static const struct attribute_group name##_group = {		\

	.attrs = name##_attrs,					\
@@ -86,6 +88,37 @@ static const struct attribute_group *name##_groups[] = { \ 
	&name##_group,						\

	NULL,							\

}



static inline int sysfs_create_groups(struct kobject *kobj,

				      const struct attribute_group **groups)

{

	int error = 0;

	int i;



	if (!groups)

		return 0;



	for (i = 0; groups[i]; i++) {

		error = sysfs_create_group(kobj, groups[i]);

		if (error) {

			while (--i >= 0)

				sysfs_remove_group(kobj, groups[i]);

			break;

		}

	}

	return error;

}



static inline void sysfs_remove_groups(struct kobject *kobj,

				       const struct attribute_group **groups)

{

	int i;



	if (!groups)

		return;

	for (i = 0; groups[i]; i++)

		sysfs_remove_group(kobj, groups[i]);

}

#endif



#endif	/* __GREYBUS_KERNEL_VER_H */