int hw_sm750_deWait(void);
 int hw_sm750le_deWait(void);
 
-resource_size_t hw_sm750_getVMSize(struct lynx_share *);
 int hw_sm750_output_setMode(struct lynxfb_output*, struct fb_var_screeninfo*,
                            struct fb_fix_screeninfo*);
 int hw_sm750_crtc_checkMode(struct lynxfb_crtc*, struct fb_var_screeninfo*);
 
        /* don't use pdev_resource[x].end - resource[x].start to
         * calculate the resource size,its only the maximum available
         * size but not the actual size,use
-        * @hw_sm750_getVMSize function can be safe.
+        * @ddk750_getVMSize function can be safe.
         * */
-       share->vidmem_size = hw_sm750_getVMSize(share);
+       share->vidmem_size = ddk750_getVMSize();
        pr_info("video memory phyAddr = %lx, size = %u bytes\n",
        share->vidmem_start, share->vidmem_size);
 
        return 0;
 }
 
-
-resource_size_t hw_sm750_getVMSize(struct lynx_share *share)
-{
-       resource_size_t ret;
-
-       ret = ddk750_getVMSize();
-       return ret;
-}
-
 int hw_sm750_output_setMode(struct lynxfb_output *output,
                                                                        struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix)
 {