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-rw-r--r--drivers/net/ppp_mppe.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/net/ppp_mppe.c b/drivers/net/ppp_mppe.c
index d5bdd257465..5ae80bbe2ed 100644
--- a/drivers/net/ppp_mppe.c
+++ b/drivers/net/ppp_mppe.c
@@ -493,14 +493,14 @@ mppe_decompress(void *arg, unsigned char *ibuf, int isize, unsigned char *obuf,
/*
* Make sure we have enough room to decrypt the packet.
- * Note that for our test we only subtract 1 byte whereas in
- * mppe_compress() we added 2 bytes (+MPPE_OVHD);
- * this is to account for possible PFC.
+ * To account for possible PFC we should only subtract 1
+ * byte whereas in mppe_compress() we added 2 bytes (+MPPE_OVHD);
+ * However, we assume no PFC, thus subtracting 2 bytes.
*/
- if (osize < isize - MPPE_OVHD - 1) {
+ if (osize < isize - MPPE_OVHD - 2) {
printk(KERN_DEBUG "mppe_decompress[%d]: osize too small! "
"(have: %d need: %d)\n", state->unit,
- osize, isize - MPPE_OVHD - 1);
+ osize, isize - MPPE_OVHD - 2);
return DECOMP_ERROR;
}
osize = isize - MPPE_OVHD - 2; /* assume no PFC */