Cleanup for GCC-4.x
diff --git a/board/mpl/common/isa.c b/board/mpl/common/isa.c
index 793c34f..51b2773 100644
--- a/board/mpl/common/isa.c
+++ b/board/mpl/common/isa.c
@@ -155,7 +155,7 @@
 
 void isa_sio_loadtable(void)
 {
-	unsigned char *s = getenv("floppy");
+	char *s = getenv("floppy");
 	/* setup Floppy device 0*/
 	isa_write_table((SIO_LOGDEV_TABLE *)&sio_fdc,0);
 	/* setup parallel port device 3 */