From b249cb4f6bc45485f631803b9762e443108a4b00 Mon Sep 17 00:00:00 2001 From: Sinclair Yeh Date: Tue, 19 Jun 2018 19:46:58 +0200 Subject: [PATCH] drm/vmwgfx: Fix atomic mode set check vmw_kms_atomic_check_modeset() is currently checking config using the legacy state, which is updated after a commit has happened. This means vmw_kms_atomic_check_modeset() will reject an invalid config on the next update rather than the current one. Fix this by using the new states for config checking Signed-off-by: Sinclair Yeh Reviewed-by: Deepak Rawat Signed-off-by: Thomas Hellstrom --- drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 40 +++++++++++++++++++---------- 1 file changed, 26 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c index e7a7a2e73bbf..6b8541f9215d 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c @@ -1526,33 +1526,45 @@ static int vmw_kms_atomic_check_modeset(struct drm_device *dev, struct drm_atomic_state *state) { - struct drm_crtc_state *crtc_state; + struct drm_crtc_state *new_crtc_state; + struct drm_plane_state *new_plane_state; + struct drm_plane *plane; struct drm_crtc *crtc; struct vmw_private *dev_priv = vmw_priv(dev); - int i; + int i, ret, cpp = 0; - for_each_new_crtc_in_state(state, crtc, crtc_state, i) { - unsigned long requested_bb_mem = 0; + ret = drm_atomic_helper_check(dev, state); - if (dev_priv->active_display_unit == vmw_du_screen_target) { - struct drm_plane *plane = crtc->primary; - struct drm_plane_state *plane_state; + /* If this is not a STDU, then no more checking is necessary */ + if (ret || dev_priv->active_display_unit != vmw_du_screen_target) + return ret; - plane_state = drm_atomic_get_new_plane_state(state, plane); + for_each_new_plane_in_state(state, plane, new_plane_state, i) { + if (new_plane_state->fb) { + int current_cpp = new_plane_state->fb->pitches[0] / + new_plane_state->fb->width; - if (plane_state && plane_state->fb) { - int cpp = plane_state->fb->format->cpp[0]; + if (cpp == 0) + cpp = current_cpp; + else if (current_cpp != cpp) + return -EINVAL; + } + } - requested_bb_mem += crtc->mode.hdisplay * cpp * - crtc->mode.vdisplay; - } + for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { + unsigned long requested_bb_mem = 0; + + if (drm_atomic_crtc_needs_modeset(new_crtc_state)) { + requested_bb_mem += new_crtc_state->mode.hdisplay * + new_crtc_state->mode.vdisplay * + cpp; if (requested_bb_mem > dev_priv->prim_bb_mem) return -EINVAL; } } - return drm_atomic_helper_check(dev, state); + return ret; } static const struct drm_mode_config_funcs vmw_kms_funcs = { -- 2.30.2