svga_check_timings
rv = svga_check_timings (&ark_timing_regs, var, info->node);
EXPORT_SYMBOL(svga_check_timings);
rv = svga_check_timings (&s3_timing_regs, var, info->node);
rv = svga_check_timings (&vt8623_timing_regs, var, info->node);
int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node);