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-rw-r--r--firmware/drivers/fat.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/firmware/drivers/fat.c b/firmware/drivers/fat.c
index 022e3eb..743e841 100644
--- a/firmware/drivers/fat.c
+++ b/firmware/drivers/fat.c
@@ -265,11 +265,8 @@ static long cluster2sec(IF_MV2(struct bpb* fat_bpb,) long cluster)
#else
const long zerocluster = 2;
#endif
- long max_cluster = (fat_bpb->totalsectors -
- fat_bpb->firstdatasector) / fat_bpb->bpb_secperclus + 1;
-
-
- if (cluster > max_cluster)
+
+ if (cluster > (long)(fat_bpb->dataclusters + 1))
{
DEBUGF( "cluster2sec() - Bad cluster number (%ld)\n", cluster);
return -1;