diff options
| -rw-r--r-- | cpukit/libfs/src/dosfs/fat.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/cpukit/libfs/src/dosfs/fat.c b/cpukit/libfs/src/dosfs/fat.c index ad1dd2afe0..01faf651bc 100644 --- a/cpukit/libfs/src/dosfs/fat.c +++ b/cpukit/libfs/src/dosfs/fat.c @@ -430,12 +430,14 @@ fat_init_volume_info(rtems_filesystem_mount_table_entry_t *mt_entry) /* * "bytes per cluster" value greater than 32K is invalid */ - if ((vol->bpc = vol->bps << vol->spc_log2) > MS_BYTES_PER_CLUSTER_LIMIT) + if (vol->bps > (MS_BYTES_PER_CLUSTER_LIMIT >> vol->spc_log2)) { rtems_disk_release(vol->dd); rtems_set_errno_and_return_minus_one(EINVAL); } + vol->bpc = vol->bps << vol->spc_log2; + for (vol->bpc_log2 = 0, i = vol->bpc; (i & 1) == 0; i >>= 1, vol->bpc_log2++); |