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modesetting: Set ppix->fb_id to 0 after removing the fb 

This ensures the fb gets re-added when a shared pixmap is re-used for
a second drmmode_set_scanout_pixmap_cpu call.

Note currently the xserver never re-uses a shared pixmap in this way,
so this is mostly a sanity fix.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Hans de Goede 2016-06-01 15:07:22 +02:00
parent b8ef71fb07
commit 210d83ad49
1 changed files with 1 additions and 0 deletions
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hw/xfree86/drivers/modesetting/drmmode_display.c
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@ -693,6 +693,7 @@ drmmode_set_scanout_pixmap_cpu(xf86CrtcPtr crtc, PixmapPtr ppix)
if (crtc->randr_crtc->scanout_pixmap) {
ppriv = msGetPixmapPriv(drmmode, crtc->randr_crtc->scanout_pixmap);
drmModeRmFB(drmmode->fd, ppriv->fb_id);
ppriv->fb_id = 0;
}
if (drmmode_crtc->slave_damage) {
DamageUnregister(drmmode_crtc->slave_damage);