[PATCH v2 12/18] drm/qxl: track primary bo

[Gerd Hoffmann]

Track which bo is used as primary surface.  With that in place we don't
need the primary_created flag any more, we can just check the primary bo
pointer instead.

Also verify we don't already have a primary surface in
qxl_io_create_primary().

Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
 drivers/gpu/drm/qxl/qxl_drv.h     | 2 +-
 drivers/gpu/drm/qxl/qxl_cmd.c     | 7 +++++--
 drivers/gpu/drm/qxl/qxl_display.c | 2 +-
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
index cb767aaef6..150b1a4f66 100644
--- a/drivers/gpu/drm/qxl/qxl_drv.h
+++ b/drivers/gpu/drm/qxl/qxl_drv.h
@@ -229,7 +229,7 @@ struct qxl_device {
 
        struct qxl_ram_header *ram_header;
 
-       unsigned int primary_created:1;
+       struct qxl_bo *primary_bo;
 
        struct qxl_memslot main_slot;
        struct qxl_memslot surfaces_slot;
diff --git a/drivers/gpu/drm/qxl/qxl_cmd.c b/drivers/gpu/drm/qxl/qxl_cmd.c
index 626e803f60..aed0242e11 100644
--- a/drivers/gpu/drm/qxl/qxl_cmd.c
+++ b/drivers/gpu/drm/qxl/qxl_cmd.c
@@ -372,13 +372,16 @@ void qxl_io_flush_surfaces(struct qxl_device *qdev)
 void qxl_io_destroy_primary(struct qxl_device *qdev)
 {
        wait_for_io_cmd(qdev, 0, QXL_IO_DESTROY_PRIMARY_ASYNC);
-       qdev->primary_created = false;
+       qdev->primary_bo = NULL;
 }
 
 void qxl_io_create_primary(struct qxl_device *qdev, struct qxl_bo *bo)
 {
        struct qxl_surface_create *create;
 
+       if (WARN_ON(qdev->primary_bo))
+               return;
+
        DRM_DEBUG_DRIVER("qdev %p, ram_header %p\n", qdev, qdev->ram_header);
        create = &qdev->ram_header->create_surface;
        create->format = bo->surf.format;
@@ -397,7 +400,7 @@ void qxl_io_create_primary(struct qxl_device *qdev, struct 
qxl_bo *bo)
        create->type = QXL_SURF_TYPE_PRIMARY;
 
        wait_for_io_cmd(qdev, 0, QXL_IO_CREATE_PRIMARY_ASYNC);
-       qdev->primary_created = true;
+       qdev->primary_bo = bo;
 }
 
 void qxl_io_memslot_add(struct qxl_device *qdev, uint8_t id)
diff --git a/drivers/gpu/drm/qxl/qxl_display.c 
b/drivers/gpu/drm/qxl/qxl_display.c
index 79dc8a1fa3..828e4f773c 100644
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -302,7 +302,7 @@ static void qxl_crtc_update_monitors_config(struct drm_crtc 
*crtc,
        struct qxl_head head;
        int oldcount, i = qcrtc->index;
 
-       if (!qdev->primary_created) {
+       if (!qdev->primary_bo) {
                DRM_DEBUG_KMS("no primary surface, skip (%s)\n", reason);
                return;
        }
-- 
2.9.3

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