Cleanup for GCC-4.x
diff --git a/common/soft_i2c.c b/common/soft_i2c.c
index f7ca498..3d0e08c 100644
--- a/common/soft_i2c.c
+++ b/common/soft_i2c.c
@@ -399,7 +399,7 @@
  */
 uchar i2c_reg_read(uchar i2c_addr, uchar reg)
 {
-	char buf;
+	uchar buf;
 
 	i2c_read(i2c_addr, reg, 1, &buf, 1);