fb_alloc_cmap_gfp
return fb_alloc_cmap_gfp(cmap, len, transp, GFP_ATOMIC);
rc = fb_alloc_cmap_gfp(&umap, cmap->len, cmap->transp != NULL,
extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);