fat: initialize ret in disk_rw()

If fat_sect_size = 0 and nr_sect = 0, the value of ret is never initialized.
A random return value is returned.

Initialize ret to 0.

Addresses-Coverity-ID: - 645495 Uninitialized scalar variable
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/fs/fat/fat.c b/fs/fat/fat.c
index 31c136e3b9edff25f3dc51e3d55a6199a96f05ba..c1ccf30771ae7a4f4a32a12d693b474909662a74 100644 (file)
--- a/fs/fat/fat.c
+++ b/fs/fat/fat.c
@@ -71,7 +71,7 @@ static inline __u32 sect_to_block(__u32 sect, __u32 *off)
 
 static int disk_rw(__u32 sect, __u32 nr_sect, void *buf, bool read)
 {
-       int ret;
+       int ret = 0;
        __u8 *block = NULL;
        __u32 rem, size, s, n;
        const ulong blksz = cur_part_info.blksz;