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Commit 2173ed0a authored by Wolfram Sang's avatar Wolfram Sang Committed by Wolfram Sang
Browse files

i2c: algos: bit: mention our experience about initial states 



So, if somebody wants to re-implement this in the future, we pinpoint to
a problem case.

Signed-off-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent 2a2c8ee2

drivers/i2c/algos/i2c-algo-bit.c

+5 −0
Original line number Diff line number Diff line
@@ -647,6 +647,11 @@ static int __i2c_bit_add_bus(struct i2c_adapter *adap, 
	if (bit_adap->getscl == NULL)

		adap->quirks = &i2c_bit_quirk_no_clk_stretch;



	/*

	 * We tried forcing SCL/SDA to an initial state here. But that caused a

	 * regression, sadly. Check Bugzilla #200045 for details.

	 */



	ret = add_adapter(adap);

	if (ret < 0)

		return ret;