diff --git a/block/genhd.c b/block/genhd.c
index df9816ede75..9cf5583c90f 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -743,7 +743,7 @@ void __init printk_all_partitions(void)
 		struct hd_struct *part;
 		char name_buf[BDEVNAME_SIZE];
 		char devt_buf[BDEVT_SIZE];
-		u8 uuid[PARTITION_META_INFO_UUIDLTH * 2 + 1];
+		char uuid_buf[PARTITION_META_INFO_UUIDLTH * 2 + 5];
 
 		/*
 		 * Don't show empty devices or things that have been
@@ -762,14 +762,16 @@ void __init printk_all_partitions(void)
 		while ((part = disk_part_iter_next(&piter))) {
 			bool is_part0 = part == &disk->part0;
 
-			uuid[0] = 0;
+			uuid_buf[0] = '\0';
 			if (part->info)
-				part_unpack_uuid(part->info->uuid, uuid);
+				snprintf(uuid_buf, sizeof(uuid_buf), "%pU",
+					 part->info->uuid);
 
 			printk("%s%s %10llu %s %s", is_part0 ? "" : "  ",
 			       bdevt_str(part_devt(part), devt_buf),
 			       (unsigned long long)part->nr_sects >> 1,
-			       disk_name(disk, part->partno, name_buf), uuid);
+			       disk_name(disk, part->partno, name_buf),
+			       uuid_buf);
 			if (is_part0) {
 				if (disk->driverfs_dev != NULL &&
 				    disk->driverfs_dev->driver != NULL)
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index e61d3192448..017a7fb5a1f 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -222,12 +222,6 @@ static inline void part_pack_uuid(const u8 *uuid_str, u8 *to)
 	}
 }
 
-static inline char *part_unpack_uuid(const u8 *uuid, char *out)
-{
-	sprintf(out, "%pU", uuid);
-	return out;
-}
-
 static inline int disk_max_parts(struct gendisk *disk)
 {
 	if (disk->flags & GENHD_FL_EXT_DEVT)