diff --git a/block/genhd.c b/block/genhd.c
index 79b9e327f3cb..16ccc0d2d5d3 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -239,7 +239,7 @@ static struct blk_major_name {
 } *major_names[BLKDEV_MAJOR_HASH_SIZE];
 
 /* index in the above - for now: assume no multimajor ranges */
-static inline int major_to_index(int major)
+static inline int major_to_index(unsigned major)
 {
 	return major % BLKDEV_MAJOR_HASH_SIZE;
 }
diff --git a/fs/char_dev.c b/fs/char_dev.c
index e5b9df993b93..143f0207c7eb 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -59,7 +59,7 @@ static struct char_device_struct {
 } *chrdevs[CHRDEV_MAJOR_HASH_SIZE];
 
 /* index in the above */
-static inline int major_to_index(int major)
+static inline int major_to_index(unsigned major)
 {
 	return major % CHRDEV_MAJOR_HASH_SIZE;
 }