diff --git a/drivers/serial/cpm_uart/cpm_uart_cpm2.c b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
index def01582de5ccd6c121f6906ebd262de5a66c5df..d9af06a791ba51b77bbb9af8bb93d35299fc9d7d 100644
--- a/drivers/serial/cpm_uart/cpm_uart_cpm2.c
+++ b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
@@ -165,9 +165,9 @@ void scc2_lineif(struct uart_cpm_port *pinfo)
 	 * really has to get out of the driver so boards can
 	 * be supported in a sane fashion.
 	 */
+	volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
 #ifndef CONFIG_STX_GP3
 	volatile iop_cpm2_t *io = cpm2_map(im_ioport);
-	volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
 
 	io->iop_pparb |= 0x008b0000;
 	io->iop_pdirb |= 0x00880000;