[U-Boot] [PATCH] rockchip: i2c: don't sent stop bit after each message

[Vasily Khoruzhick]

That's not correct and it breaks SMBUS-style reads and and writes for
some chips (e.g. SYR82X/SYR83X).

Stop bit should be sent only after the last message.

Signed-off-by: Vasily Khoruzhick <anarsoul at gmail.com>
---
 drivers/i2c/rk_i2c.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/rk_i2c.c b/drivers/i2c/rk_i2c.c
index cdd94bb05a..32b2ee8578 100644
--- a/drivers/i2c/rk_i2c.c
+++ b/drivers/i2c/rk_i2c.c
@@ -253,7 +253,6 @@ static int rk_i2c_read(struct rk_i2c *i2c, uchar chip, uint reg, uint r_len,
 	}
 
 i2c_exit:
-	rk_i2c_send_stop_bit(i2c);
 	rk_i2c_disable(i2c);
 
 	return err;
@@ -332,7 +331,6 @@ static int rk_i2c_write(struct rk_i2c *i2c, uchar chip, uint reg, uint r_len,
 	}
 
 i2c_exit:
-	rk_i2c_send_stop_bit(i2c);
 	rk_i2c_disable(i2c);
 
 	return err;
@@ -360,6 +358,9 @@ static int rockchip_i2c_xfer(struct udevice *bus, struct i2c_msg *msg,
 		}
 	}
 
+	rk_i2c_send_stop_bit(i2c);
+	rk_i2c_disable(i2c);
+
 	return 0;
 }
 
-- 
2.24.0