greybus: kernel_ver.h: add ATTRIBUTE_GROUPS() macro for older kernels
This was added in 3.11, and we need it for 3.10
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
diff --git a/drivers/staging/greybus/kernel_ver.h b/drivers/staging/greybus/kernel_ver.h
index e0fea18..e4cda5c 100644
--- a/drivers/staging/greybus/kernel_ver.h
+++ b/drivers/staging/greybus/kernel_ver.h
@@ -48,4 +48,19 @@
}
#endif
+/*
+ * ATTRIBUTE_GROUPS showed up in 3.11-rc2, but we need to build on 3.10, so add
+ * it here.
+ */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,11,0)
+#define ATTRIBUTE_GROUPS(name) \
+static const struct attribute_group name##_group = { \
+ .attrs = name##_attrs, \
+}; \
+static const struct attribute_group *name##_groups[] = { \
+ &name##_group, \
+ NULL, \
+}
+#endif
+
#endif /* __GREYBUS_KERNEL_VER_H */