diff --git a/drivers/i2c/rk_i2c.c b/drivers/i2c/rk_i2c.c
index a4c0032fd8dce24251272cddb9a07170f77772a8..7c701cbed0a981d7c41b6c4fb1fc99735b9757c5 100644
--- a/drivers/i2c/rk_i2c.c
+++ b/drivers/i2c/rk_i2c.c
@@ -269,9 +269,9 @@ static int rk_i2c_write(struct rk_i2c *i2c, uchar chip, uint reg, uint r_len,
 				if ((i * 4 + j) == bytes_xferred)
 					break;
 
-				if (i == 0 && j == 0) {
+				if (i == 0 && j == 0 && pbuf == buf) {
 					txdata |= (chip << 1);
-				} else if (i == 0 && j <= r_len) {
+				} else if (i == 0 && j <= r_len && pbuf == buf) {
 					txdata |= (reg &
 						(0xff << ((j - 1) * 8))) << 8;
 				} else {