diff --git a/arch/ppc/8xx_io/commproc.c b/arch/ppc/8xx_io/commproc.c
index 7088428..9da880b 100644
--- a/arch/ppc/8xx_io/commproc.c
+++ b/arch/ppc/8xx_io/commproc.c
@@ -459,7 +459,7 @@ EXPORT_SYMBOL(cpm_dpdump);
 
 void *cpm_dpram_addr(unsigned long offset)
 {
-	return ((immap_t *)IMAP_ADDR)->im_cpm.cp_dpmem + offset;
+	return (void *)(dpram_vbase + offset);
 }
 EXPORT_SYMBOL(cpm_dpram_addr);