volume_id: abort early on read failures.

 should help with probing missing fdd's

1 files changed, 2 insertions, 1 deletions

diff --git a/util-linux/volume_id/fat.c b/util-linux/volume_id/fat.c
index 0e0a57d62..352040f57 100644
--- a/util-linux/volume_id/fat.c
+++ b/util-linux/volume_id/fat.c
@@ -119,8 +119,9 @@ static uint8_t *get_attr_volume_id(struct vfat_dir_entry *dir, int count)
         return NULL;
 }
 
-int volume_id_probe_vfat(struct volume_id *id, uint64_t fat_partition_off)
+int volume_id_probe_vfat(struct volume_id *id /*,uint64_t fat_partition_off*/)
 {
+#define fat_partition_off ((uint64_t)0)
         struct vfat_super_block *vs;
         struct vfat_dir_entry *dir;
         uint16_t sector_size_bytes;