• Gabriel Krisman Bertazi's avatar
    drm: Rely on mode_config data for fb_helper initialization · e4563f6b
    Gabriel Krisman Bertazi authored
    Instead of receiving the num_crts as a parameter, we can read it
    directly from the mode_config structure.  I audited the drivers that
    invoke this helper and I believe all of them initialize the mode_config
    struct accordingly, prior to calling the fb_helper.
    
    I used the following coccinelle hack to make this transformation, except
    for the function headers and comment updates.  The first and second
    rules are split because I couldn't find a way to remove the unused
    temporary variables at the same time I removed the parameter.
    
    // <smpl>
    @r@
    expression A,B,D,E;
    identifier C;
    @@
    (
    - drm_fb_helper_init(A,B,C,D)
    + drm_fb_helper_init(A,B,D)
    |
    - drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
    + drm_fbdev_cma_init_with_funcs(A,B,D,E)
    |
    - drm_fbdev_cma_init(A,B,C,D)
    + drm_fbdev_cma_init(A,B,D)
    )
    
    @@
    expression A,B,C,D,E;
    @@
    (
    - drm_fb_helper_init(A,B,C,D)
    + drm_fb_helper_init(A,B,D)
    |
    - drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
    + drm_fbdev_cma_init_with_funcs(A,B,D,E)
    |
    - drm_fbdev_cma_init(A,B,C,D)
    + drm_fbdev_cma_init(A,B,D)
    )
    
    @@
    identifier r.C;
    type T;
    expression V;
    @@
    - T C;
    <...
    when != C
    - C = V;
    ...>
    // </smpl>
    
    Changes since v1:
     - Rebased on top of the tip of drm-misc-next.
     - Remove mention to sti since a proper fix got merged.
    Suggested-by: default avatarDaniel Vetter <daniel.vetter@intel.com>
    Signed-off-by: default avatarGabriel Krisman Bertazi <krisman@collabora.co.uk>
    Reviewed-by: default avatarEric Anholt <eric@anholt.net>
    Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    Link: http://patchwork.freedesktop.org/patch/msgid/20170202162640.27261-1-krisman@collabora.co.uk
    e4563f6b
imx-drm-core.c 13 KB