Cleanup for GCC-4.x
diff --git a/cpu/mpc8260/i2c.c b/cpu/mpc8260/i2c.c
index e0ac684..ea97ab8 100644
--- a/cpu/mpc8260/i2c.c
+++ b/cpu/mpc8260/i2c.c
@@ -752,7 +752,7 @@
 uchar
 i2c_reg_read(uchar chip, uchar reg)
 {
-	char buf;
+	uchar buf;
 
 	i2c_read(chip, reg, 1, &buf, 1);