fun_wait(fun);
 }
 
-static u8 nand_read_byte(struct mtd_info *mtd)
+static u8 upm_nand_read_byte(struct mtd_info *mtd)
 {
        struct nand_chip *chip = mtd->priv;
 
        return in_8(chip->IO_ADDR_R);
 }
 
-static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
+static void upm_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
 {
        int i;
        struct nand_chip *chip = mtd->priv;
                fun_wait(fun);
 }
 
-static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
+static void upm_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
 {
        int i;
        struct nand_chip *chip = mtd->priv;
                buf[i] = in_8(chip->IO_ADDR_R);
 }
 
-static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
+static int upm_nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
 {
        int i;
        struct nand_chip *chip = mtd->priv;
 #if CONFIG_SYS_NAND_MAX_CHIPS > 1
        chip->select_chip = fun_select_chip;
 #endif
-       chip->read_byte = nand_read_byte;
-       chip->read_buf = nand_read_buf;
-       chip->write_buf = nand_write_buf;
-       chip->verify_buf = nand_verify_buf;
+       chip->read_byte = upm_nand_read_byte;
+       chip->read_buf = upm_nand_read_buf;
+       chip->write_buf = upm_nand_write_buf;
+       chip->verify_buf = upm_nand_verify_buf;
        if (fun->dev_ready)
                chip->dev_ready = nand_dev_ready;