diff options
| -rw-r--r-- | fs/fat/fat.c | 11 | ||||
| -rw-r--r-- | fs/fat/fat_write.c | 11 |
2 files changed, 18 insertions, 4 deletions
diff --git a/fs/fat/fat.c b/fs/fat/fat.c index 06dcbb7..f939bc5 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) diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c index 98b88ad..adb6940 100644 --- a/fs/fat/fat_write.c +++ b/fs/fat/fat_write.c @@ -30,6 +30,8 @@ static void uppercase(char *str, int len) static int total_sector; static int disk_write(__u32 block, __u32 nr_blocks, void *buf) { + ulong ret; + if (!cur_dev || !cur_dev->block_write) return -1; @@ -39,8 +41,13 @@ static int disk_write(__u32 block, __u32 nr_blocks, void *buf) return -1; } - return cur_dev->block_write(cur_dev->dev, - cur_part_info.start + block, nr_blocks, buf); + ret = cur_dev->block_write(cur_dev->dev, + cur_part_info.start + block, + nr_blocks, buf); + if (nr_blocks && ret == 0) + return -1; + + return ret; } /* |