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fatfs: Backport some fixes

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This commit is contained in:
CTCaer
2020-05-05 19:21:07 +03:00
parent 322280757f
commit 5b91c54936
4 changed files with 10 additions and 4 deletions
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5
bootloader/libs/fatfs/ff.c
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@@ -5630,7 +5630,7 @@ FRESULT f_mkfs (
UINT len /* Size of working buffer [byte] */
)
{
const UINT n_fats = 1; /* Number of FATs for FAT/FAT32 volume (1 or 2) */
const UINT n_fats = 2; /* Number of FATs for FAT/FAT32 volume (1 or 2) */
const UINT n_rootdir = 512; /* Number of root directory entries for FAT volume */
static const WORD cst[] = {1, 4, 16, 64, 256, 512, 0}; /* Cluster size boundary for FAT volume (4Ks unit) */
static const WORD cst32[] = {1, 2, 4, 8, 16, 32, 0}; /* Cluster size boundary for FAT32 volume (128Ks unit) */
@@ -5918,6 +5918,9 @@ FRESULT f_mkfs (
if (fmt == FS_FAT32) { /* FAT32: Move FAT base */
sz_rsv += n; b_fat += n;
} else { /* FAT: Expand FAT size */
if (n % n_fats) { /* Adjust fractional error if needed */
n--; sz_rsv++; b_fat++;
}
sz_fat += n / n_fats;
}