From: Matt Roper Date: Thu, 11 Dec 2014 15:20:57 +0000 (-0800) Subject: drm/plane-helper: Test for plane disable earlier X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7432ca5acec8a24a7e576c92d28449e2d790b734;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git drm/plane-helper: Test for plane disable earlier drm_plane_helper_check_update() currently uses crtc before testing whether we're disabling the plane (fb == NULL). Move the fb test before the first crtc usage so that crtc == NULL doesn't have to be handled by the caller. Signed-off-by: Matt Roper Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c index 18a1ac6ac22f..391dfb7d1086 100644 --- a/drivers/gpu/drm/drm_plane_helper.c +++ b/drivers/gpu/drm/drm_plane_helper.c @@ -142,6 +142,17 @@ int drm_plane_helper_check_update(struct drm_plane *plane, { int hscale, vscale; + if (!fb) { + *visible = false; + return 0; + } + + /* crtc should only be NULL when disabling (i.e., !fb) */ + if (WARN_ON(!crtc)) { + *visible = false; + return 0; + } + if (!crtc->enabled && !can_update_disabled) { DRM_DEBUG_KMS("Cannot update plane of a disabled CRTC.\n"); return -EINVAL; @@ -155,11 +166,6 @@ int drm_plane_helper_check_update(struct drm_plane *plane, return -ERANGE; } - if (!fb) { - *visible = false; - return 0; - } - *visible = drm_rect_clip_scaled(src, dest, clip, hscale, vscale); if (!*visible) /*