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| author | tychon <tychon@FreeBSD.org> | 2014-02-21 01:15:26 +0000 |
|---|---|---|
| committer | tychon <tychon@FreeBSD.org> | 2014-02-21 01:15:26 +0000 |
| commit | 19c633f86f900748acb7cb8836a83f49c5a92fb5 (patch) | |
| tree | e47fb323b7a66a0b1eb09f338b24d121a8a384dd | |
| parent | 8e2617b93fdb895221089a879ee8045802daa901 (diff) | |
| download | FreeBSD-src-19c633f86f900748acb7cb8836a83f49c5a92fb5.zip FreeBSD-src-19c633f86f900748acb7cb8836a83f49c5a92fb5.tar.gz | |
Avoid clobbering the counter mode when issuing a latch command.
Approved by: grehan (co-mentor)
| -rw-r--r-- | usr.sbin/bhyve/pit_8254.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/usr.sbin/bhyve/pit_8254.c b/usr.sbin/bhyve/pit_8254.c index 3eb1aa7..26fb03d 100644 --- a/usr.sbin/bhyve/pit_8254.c +++ b/usr.sbin/bhyve/pit_8254.c @@ -216,11 +216,12 @@ pit_8254_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes, c = &counter[sel >> 6]; c->ctx = ctx; - c->mode = mode; if (rw == TIMER_LATCH) pit_update_counter(c, 1); - else + else { + c->mode = mode; c->olbyte = 0; /* reset latch after reprogramming */ + } return (0); } |
