[PATCH xserver] modesetting: Fix inverted check in dri2 WaitMSC

[Frank Binns]

Adam Jackson <ajax at redhat.com> writes:

> ms_queue_vblank() returns false on failure.
>
> Reported-by: Chris Wilson <chris at chris-wilson.co.uk>
> Signed-off-by: Adam Jackson <ajax at redhat.com>

Reviewed-by: Frank Binns <frank.binns at imgtec.com>

> ---
>  hw/xfree86/drivers/modesetting/dri2.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/hw/xfree86/drivers/modesetting/dri2.c b/hw/xfree86/drivers/modesetting/dri2.c
> index fd36aa118..96eaaaaf7 100644
> --- a/hw/xfree86/drivers/modesetting/dri2.c
> +++ b/hw/xfree86/drivers/modesetting/dri2.c
> @@ -749,7 +749,7 @@ ms_dri2_schedule_wait_msc(ClientPtr client, DrawablePtr draw, CARD64 target_msc,
>              target_msc = current_msc;
>  
>          ret = ms_queue_vblank(crtc, MS_QUEUE_ABSOLUTE, target_msc, &queued_msc, seq);
> -        if (ret) {
> +        if (!ret) {
>              static int limit = 5;
>              if (limit) {
>                  xf86DrvMsg(scrn->scrnIndex, X_WARNING,