From 74d7ea50627a60257a92e77402780897075654fd Mon Sep 17 00:00:00 2001 From: Damien Zammit Date: Sun, 26 Feb 2023 01:58:10 +0000 Subject: [PATCH] timer/i8254: Fix one shot PIT mode Currently, the one-shot (mode 1) PIT expires far too quickly, due to the output being set under the wrong logic. This change fixes the one-shot PIT mode to behave similarly to mode 0. TESTED: using the one-shot PIT mode to calibrate a local apic timer. Signed-off-by: Damien Zammit Message-Id: <20230226015755.52624-1-damien@zamaudio.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/timer/i8254_common.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/hw/timer/i8254_common.c b/hw/timer/i8254_common.c index e4093e2904..b25da448c8 100644 --- a/hw/timer/i8254_common.c +++ b/hw/timer/i8254_common.c @@ -52,10 +52,8 @@ int pit_get_out(PITChannelState *s, int64_t current_time) switch (s->mode) { default: case 0: - out = (d >= s->count); - break; case 1: - out = (d < s->count); + out = (d >= s->count); break; case 2: if ((d % s->count) == 0 && d != 0) {