[PATCH v1 04/10] video: tc358767: fix AUXDATAn registers access during write

[Andrey Gusakov]

First four bytes should go to DP0_AUXWDATA0. Due to bug if
len > 4 first four bytes was writen to DP0_AUXWDATA1 and all
data get shifted by 4 bytes. Fix it.

Signed-off-by: Andrey Gusakov <andrey.gusakov at cogentembedded.com>
---
 drivers/video/tc358767.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/tc358767.c b/drivers/video/tc358767.c
index cc6a35e70..4d311c464 100644
--- a/drivers/video/tc358767.c
+++ b/drivers/video/tc358767.c
@@ -388,7 +388,7 @@ static int tc_aux_write(struct tc_data *tc, int reg, char *data, int size)
 		i++;
 		if (((i % 4) == 0) ||
 		    (i == size)) {
-			tc_write(DP0_AUXWDATA(i >> 2), tmp);
+			tc_write(DP0_AUXWDATA((i - 1) >> 2), tmp);
 			tmp = 0;
 		}
 	}
@@ -476,7 +476,7 @@ static int tc_aux_i2c_write(struct tc_data *tc, struct i2c_msg *msg)
 		i++;
 		if (((i % 4) == 0) ||
 		    (i == msg->len)) {
-			tc_write(DP0_AUXWDATA(i >> 2), tmp);
+			tc_write(DP0_AUXWDATA((i - 1) >> 2), tmp);
 			tmp = 0;
 		}
 	}
-- 
2.13.0