media: tc358743: Add error code to error message

Add the error code of a failed i2c transfer to the error message.

Signed-off-by: Alexander Stein <[e-mail]>
Reviewed-by: Kieran Bingham <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/i2c/tc358743.c

···
 
 	err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
 	if (err != ARRAY_SIZE(msgs)) {
-		v4l2_err(sd, "%s: reading register 0x%x from 0x%x failed\n",
-				__func__, reg, client->addr);
+		v4l2_err(sd, "%s: reading register 0x%x from 0x%x failed: %d\n",
+				__func__, reg, client->addr, err);
 	}
 }
 
···
 
 	err = i2c_transfer(client->adapter, &msg, 1);
 	if (err != 1) {
-		v4l2_err(sd, "%s: writing register 0x%x from 0x%x failed\n",
-				__func__, reg, client->addr);
+		v4l2_err(sd, "%s: writing register 0x%x from 0x%x failed: %d\n",
+				__func__, reg, client->addr, err);
 		return;
 	}