diff --git a/[refs] b/[refs]
index fd976a2c4233..95d6125fd3c4 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 185aed75570fb4f78ef283dfa26cd9da5fa06a91
+refs/heads/master: bff4056c8b868a4311d5ebd6cbbf09a2c10f4551
diff --git a/trunk/drivers/i2c/busses/i2c-sh_mobile.c b/trunk/drivers/i2c/busses/i2c-sh_mobile.c
index 640cbb237328..3384a717fec0 100644
--- a/trunk/drivers/i2c/busses/i2c-sh_mobile.c
+++ b/trunk/drivers/i2c/busses/i2c-sh_mobile.c
@@ -318,7 +318,8 @@ static int sh_mobile_i2c_isr_rx(struct sh_mobile_i2c_data *pd)
 		} else
 			data = i2c_op(pd, OP_RX, 0);
 
-		pd->msg->buf[real_pos] = data;
+		if (real_pos >= 0)
+			pd->msg->buf[real_pos] = data;
 	} while (0);
 
 	pd->pos++;