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drm/virtio: fix pageflip flush

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Sending the flush command only makes sense if we actually have
a framebuffer attached to the scanout (handle != 0).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Ezequiel Garcia <ezequiel@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20181219122708.4586-3-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2018-12-19 13:27:00 +01:00
parent 3630c2a24f
commit 6a01d277ac
1 changed files with 6 additions and 5 deletions
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11
drivers/gpu/drm/virtio/virtgpu_plane.c
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@ -130,11 +130,12 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
plane->state->src_h >> 16,
plane->state->src_x >> 16,
plane->state->src_y >> 16);
virtio_gpu_cmd_resource_flush(vgdev, handle,
plane->state->src_x >> 16,
plane->state->src_y >> 16,
plane->state->src_w >> 16,
plane->state->src_h >> 16);
if (handle)
virtio_gpu_cmd_resource_flush(vgdev, handle,
plane->state->src_x >> 16,
plane->state->src_y >> 16,
plane->state->src_w >> 16,
plane->state->src_h >> 16);
}
static int virtio_gpu_cursor_prepare_fb(struct drm_plane *plane,