Commit ef6223dc authored by Inki Dae's avatar Inki Dae
Browse files

drm/exynos: check crtc's dpms mode at page flip



when page flip is requested, crtc's dpms mode should be on.
if not on, return -EINVAL so that it doesn't access hardware.
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
parent 471d60fe
......@@ -207,6 +207,12 @@ static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
DRM_DEBUG_KMS("%s\n", __FILE__);
/* when the page flip is requested, crtc's dpms should be on */
if (exynos_crtc->dpms > DRM_MODE_DPMS_ON) {
DRM_ERROR("failed page flip request.\n");
return -EINVAL;
}
mutex_lock(&dev->struct_mutex);
if (event) {
......
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