From 81978c95392fa9797f2b7f439ebd4d8cbf5b7e69 Mon Sep 17 00:00:00 2001
From: Adrien Moulin <adrien@elyosh.org>
Date: Tue, 2 Aug 2022 22:38:20 +0200
Subject: [PATCH] pit_fast: fix off by one error with mode 2 counter

---
 src/pit_fast.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/pit_fast.c b/src/pit_fast.c
index 704cfd68c..758183d5e 100644
--- a/src/pit_fast.c
+++ b/src/pit_fast.c
@@ -145,6 +145,8 @@ pitf_dump_and_disable_timer(ctrf_t *ctr)
 {
     if (ctr->using_timer && timer_is_enabled(&ctr->timer)) {
         ctr->count = pitf_read_timer(ctr);
+        if (ctr->m == 2)
+            ctr->count--; /* Don't store the offset from pitf_read_timer */
         timer_disable(&ctr->timer);
     }
 }