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audio: fix integer overflow

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Tell the compiler to do a 32bit * 32bit -> 64bit multiplication
because period_ticks is a 64bit variable. The overflow occurs
for audio timer periods larger than 4294967us.

Fixes: be1092afa0 "audio: fix audio timer rate conversion bug"

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 8893a235-66a8-8fbe-7d95-862e29da90b1@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Volker Rümelin 2019-12-19 21:34:05 +01:00 committed by Gerd Hoffmann
parent 7c9eb86e67
commit 40ad46d3cc
1 changed files with 1 additions and 1 deletions
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2
audio/audio.c
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@ -1738,7 +1738,7 @@ static AudioState *audio_init(Audiodev *dev, const char *name)
if (dev->timer_period <= 0) {
s->period_ticks = 1;
} else {
s->period_ticks = dev->timer_period * SCALE_US;
s->period_ticks = dev->timer_period * (int64_t)SCALE_US;
}
e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);