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update_fat_entry() set the wrong cache line dirty if bpb_resvdseccnt wasn't divisible by 32 (didn't compensate for the reserved sector count)

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3379 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2003-03-04 13:50:23 +00:00
parent 2573879fb1
commit 16d1a68b33
1 changed files with 2 additions and 9 deletions
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11
firmware/drivers/fat.c
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@ -457,11 +457,6 @@ static int bpb_is_sane(void)
fat_bpb.bpb_bytspersec * fat_bpb.bpb_secperclus);
return -2;
}
if (fat_bpb.bpb_rsvdseccnt != 32)
{
DEBUGF( "bpb_is_sane() - Warning: Reserved sectors is not 32 (%d)\n",
fat_bpb.bpb_rsvdseccnt);
}
if(fat_bpb.bpb_numfats != 2)
{
DEBUGF( "bpb_is_sane() - Warning: NumFATS is not 2 (%d)\n",
@ -602,7 +597,7 @@ static int update_fat_entry(unsigned int entry, unsigned int val)
DEBUGF( "update_entry() - Could not cache sector %d\n", sector);
return -1;
}
fat_cache[sector & FAT_CACHE_MASK].dirty = true;
fat_cache[(sector + fat_bpb.bpb_rsvdseccnt) & FAT_CACHE_MASK].dirty = true;
if ( val ) {
if (!(SWAB32(sec[offset]) & 0x0fffffff))
@ -1443,7 +1438,6 @@ int fat_rename(struct fat_file* file,
return 0;
}
static int next_write_cluster(struct fat_file* file,
int oldcluster,
int* newsector)
@ -1467,7 +1461,7 @@ static int next_write_cluster(struct fat_file* file,
update_fat_entry(oldcluster, cluster);
else
file->firstcluster = cluster;
update_fat_entry(cluster, FAT_EOF_MARK);
update_fat_entry(cluster, FAT_EOF_MARK);
}
else {
#ifdef TEST_FAT
@ -1611,7 +1605,6 @@ int fat_seek(struct fat_file *file, unsigned int seeksector )
clusternum = seeksector / fat_bpb.bpb_secperclus;
sectornum = seeksector % fat_bpb.bpb_secperclus;
for (i=0; i<clusternum; i++) {
cluster = get_next_cluster(cluster);
if (!cluster) {