diff --git a/drivers/mtd/maps/uclinux.c b/drivers/mtd/maps/uclinux.c
index 81756e3..61d4087 100644
--- a/drivers/mtd/maps/uclinux.c
+++ b/drivers/mtd/maps/uclinux.c
@@ -22,8 +22,12 @@
 
 /****************************************************************************/
 
+extern char _ebss;
+
 struct map_info uclinux_ram_map = {
 	.name = "RAM",
+	.phys = (unsigned long)&_ebss,
+	.size = 0,
 };
 
 struct mtd_info *uclinux_ram_mtdinfo;
@@ -55,12 +59,10 @@ static int __init uclinux_mtd_init(void)
 {
 	struct mtd_info *mtd;
 	struct map_info *mapp;
-	extern char _ebss;
-	unsigned long addr = (unsigned long) &_ebss;
 
 	mapp = &uclinux_ram_map;
-	mapp->phys = addr;
-	mapp->size = PAGE_ALIGN(ntohl(*((unsigned long *)(addr + 8))));
+	if (!mapp->size)
+		mapp->size = PAGE_ALIGN(ntohl(*((unsigned long *)(mapp->phys + 8))));
 	mapp->bankwidth = 4;
 
 	printk("uclinux[mtd]: RAM probe address=0x%x size=0x%x\n",