[syslinux:fsc] FAT: handle the cluster number being 1

[syslinux-bot for H. Peter Anvin]

Commit-ID:  5964900d2335a6d84a63e89fb0e7e302aeae4da3
Gitweb:     http://syslinux.zytor.com/commit/5964900d2335a6d84a63e89fb0e7e302aeae4da3
Author:     H. Peter Anvin <hpa at zytor.com>
AuthorDate: Mon, 25 Jan 2010 09:28:26 -0800
Committer:  H. Peter Anvin <hpa at zytor.com>
CommitDate: Mon, 25 Jan 2010 09:28:26 -0800

FAT: handle the cluster number being 1

Any reference to cluster 1 is an error, so treat it the same as
cluster 0 or one of the EOF cluster numbers.

Signed-off-by: H. Peter Anvin <hpa at zytor.com>


---
 core/fs/fat/fat.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/core/fs/fat/fat.c b/core/fs/fat/fat.c
index ce3cae6..21dda90 100644
--- a/core/fs/fat/fat.c
+++ b/core/fs/fat/fat.c
@@ -128,7 +128,7 @@ static sector_t get_next_sector(struct fs_info* fs, uint32_t sector)
     
     /* get a new cluster */
     cluster = get_next_cluster(fs, (data_sector >> FAT_SB(fs)->clust_shift) + 2);
-    if (!cluster ) 
+    if (cluster < 2) 
 	return 0;
     
     /* return the start of the new cluster */