[Intel-gfx] [PATCH 08/23] drm: Use plane->state->fb over plane->fb

[Ville Syrjala]

From: Ville Syrjälä <ville.syrj...@linux.intel.com>

Stop looking at plane->fb on atomic drivers. Use plane->state->fb
instead.

Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
 drivers/gpu/drm/drm_atomic_helper.c |  2 +-
 drivers/gpu/drm/drm_crtc.c          | 11 +++++++++--
 drivers/gpu/drm/drm_plane.c         | 19 ++++++++++++++-----
 3 files changed, 24 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/drm_atomic_helper.c 
b/drivers/gpu/drm/drm_atomic_helper.c
index 1b39ebf2be2e..0e806f070d00 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -2659,7 +2659,7 @@ int drm_atomic_helper_disable_plane(struct drm_plane 
*plane,
                goto fail;
        }
 
-       if (plane_state->crtc && (plane == plane->crtc->cursor))
+       if (plane_state->crtc && plane_state->crtc->cursor == plane)
                plane_state->state->legacy_cursor_update = true;
 
        ret = __drm_atomic_helper_disable_plane(plane, plane_state);
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 537ffaab855c..a231dd5dce16 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -597,13 +597,20 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data,
                /* If we have a mode we need a framebuffer. */
                /* If we pass -1, set the mode with the currently bound fb */
                if (crtc_req->fb_id == -1) {
-                       if (!plane->fb) {
+                       struct drm_framebuffer *old_fb;
+
+                       if (plane->state)
+                               old_fb = plane->state->fb;
+                       else
+                               old_fb = plane->fb;
+
+                       if (!old_fb) {
                                DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
                                ret = -EINVAL;
                                goto out;
                        }
 
-                       fb = plane->fb;
+                       fb = old_fb;
                        /* Make refcounting symmetric with the lookup path. */
                        drm_framebuffer_get(fb);
                } else {
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 008f9456a5e8..035054455301 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -792,7 +792,11 @@ static int drm_mode_cursor_universal(struct drm_crtc *crtc,
                        fb = NULL;
                }
        } else {
-               fb = plane->fb;
+               if (plane->state)
+                       fb = plane->state->fb;
+               else
+                       fb = plane->fb;
+
                if (fb)
                        drm_framebuffer_get(fb);
        }
@@ -934,7 +938,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
        struct drm_mode_crtc_page_flip_target *page_flip = data;
        struct drm_crtc *crtc;
        struct drm_plane *plane;
-       struct drm_framebuffer *fb = NULL;
+       struct drm_framebuffer *fb = NULL, *old_fb;
        struct drm_pending_vblank_event *e = NULL;
        u32 target_vblank = page_flip->sequence;
        struct drm_modeset_acquire_ctx ctx;
@@ -1012,7 +1016,12 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
        if (ret)
                goto out;
 
-       if (plane->fb == NULL) {
+       if (plane->state)
+               old_fb = plane->state->fb;
+       else
+               old_fb = plane->fb;
+
+       if (old_fb == NULL) {
                /* The framebuffer is currently unbound, presumably
                 * due to a hotplug event, that userspace has not
                 * yet discovered.
@@ -1027,7 +1036,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
                goto out;
        }
 
-       if (crtc->state) {
+       if (plane->state) {
                const struct drm_plane_state *state = plane->state;
 
                ret = drm_framebuffer_check_src_coords(state->src_x,
@@ -1042,7 +1051,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
        if (ret)
                goto out;
 
-       if (plane->fb->format != fb->format) {
+       if (old_fb->format != fb->format) {
                DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer 
format.\n");
                ret = -EINVAL;
                goto out;
-- 
2.16.1

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