On 05/14/2014 08:26 AM, YoungJun Cho wrote: > There could be the case that the page flip operation isn't finished correctly > with some abnormal condition such as panel reset. So this patch replaces > wait_event() with wait_event_timeout() to avoid waiting for page flip > completion > infinitely. > > Signed-off-by: YoungJun Cho <[email protected]> > Acked-by: Inki Dae <[email protected]> > Acked-by: Kyungmin Park <[email protected]>
Reviewed-by: Andrzej Hajda <[email protected]> > --- > drivers/gpu/drm/exynos/exynos_drm_crtc.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c > b/drivers/gpu/drm/exynos/exynos_drm_crtc.c > index 95c9435..485fa26 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c > @@ -69,8 +69,9 @@ static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int > mode) > > if (mode > DRM_MODE_DPMS_ON) { > /* wait for the completion of page flip. */ > - wait_event(exynos_crtc->pending_flip_queue, > - atomic_read(&exynos_crtc->pending_flip) == 0); > + wait_event_timeout(exynos_crtc->pending_flip_queue, > + !atomic_read(&exynos_crtc->pending_flip), > + HZ/20); > drm_vblank_off(crtc->dev, exynos_crtc->pipe); > } > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
