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vo_drm: fix releasing VT if received signal twice

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If user switched terminals frantically, mpv could get SIGUSR1 twice in a
row, which, up until now, resulted in destroying CRTC twice. This caused
it to segfault. After this fix, double SIGUSR1 should be ignored.
This commit is contained in:
Marcin Kurczewski
2015-04-20 21:30:26 +02:00
committed by wm4
parent a7cf35c1ca
commit 7f29172baf
1 changed files with 3 additions and 0 deletions
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3
video/out/vo_drm.c
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@@ -350,6 +350,7 @@ static void modeset_page_flipped(int fd, unsigned int frame, unsigned int sec,
static int setup_vo_crtc(struct vo *vo)
{
struct priv *p = vo->priv;
if (p->active) return;
p->old_crtc = drmModeGetCrtc(p->fd, p->dev->crtc);
int ret = drmModeSetCrtc(p->fd, p->dev->crtc,
p->dev->bufs[p->dev->front_buf + BUF_COUNT - 1].fb,
@@ -362,6 +363,7 @@ static void release_vo_crtc(struct vo *vo)
{
struct priv *p = vo->priv;
if (!p->active) return;
p->active = false;
// wait for current page flip
@@ -383,6 +385,7 @@ static void release_vo_crtc(struct vo *vo)
1,
&p->dev->mode);
drmModeFreeCrtc(p->old_crtc);
p->old_crtc = NULL;
}
}