On Mon, Aug 14, 2017 at 09:36:56AM +0800, Jun Gao wrote:

On Sat, 2017-08-12 at 16:44 +0200, Wolfram Sang wrote:

quoted

quoted

+static const struct i2c_adapter_quirks mt7622_i2c_quirks = {
+	.max_num_msgs = 255,
+	.max_write_len = 65535,
+	.max_read_len = 65535,
+	.max_comb_1st_msg_len = 65535,
+	.max_comb_2nd_msg_len = 65535,
+};

That looks like no quirks? Then just leave the quirks pointer below
empty.

Compare to MT8173 i2c controller, MT7622 limits message numbers to 255.

I see. But you can safely drop all the length settings. The i2c core has
this comment in quirk handling:

/* Check if val is exceeding the quirk IFF quirk is non 0 */

IFF means "if and only if".