diff options
Diffstat (limited to 'fs/fat/fat.c')
| -rw-r--r-- | fs/fat/fat.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/fat/fat.c b/fs/fat/fat.c index 06dcbb7005..f939bc5dee 100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -46,11 +46,18 @@ static disk_partition_t cur_part_info; static int disk_read(__u32 block, __u32 nr_blocks, void *buf) { + ulong ret; + if (!cur_dev || !cur_dev->block_read) return -1; - return cur_dev->block_read(cur_dev->dev, - cur_part_info.start + block, nr_blocks, buf); + ret = cur_dev->block_read(cur_dev->dev, + cur_part_info.start + block, nr_blocks, buf); + + if (nr_blocks && ret == 0) + return -1; + + return ret; } int fat_set_blk_dev(block_dev_desc_t *dev_desc, disk_partition_t *info) |