linux-kernel - Re: [PATCH v8 3/8] i2c: rk3x: Remove redundant rk3x_i2c_clean

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Date:	Thu, 12 May 2016 09:11:29 +0800
From:	"David.Wu" <david.wu@...k-chips.com>
To:	Heiko Stuebner <heiko@...ech.de>
Cc:	wsa@...-dreams.de, robh+dt@...nel.org, dianders@...omium.org,
	andy.shevchenko@...il.com, pawel.moll@....com,
	mark.rutland@....com, ijc+devicetree@...lion.org.uk,
	galak@...eaurora.org, briannorris@...gle.com,
	davidriley@...gle.com, huangtao@...k-chips.com, hl@...k-chips.com,
	xjq@...k-chips.com, zyw@...k-chips.com, cf@...k-chips.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org, linux-i2c@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 3/8] i2c: rk3x: Remove redundant rk3x_i2c_clean_ipd()

Hi Heiko

在 2016/5/12 2:26, Heiko Stuebner 写道:
> Am Mittwoch, 11. Mai 2016, 03:24:07 schrieb David Wu:
>> Call rk3x_i2c_setup() before rk3x_i2c_start()
>
> That beginning of the sentence could use a tiny improvement, like
>
> ----
> rk3x_i2c_setup() gets called directly before rk3x_i2c_start()
> ----
>

Okay, i will add it in next version, Thanks.

> to make it obvious what happens in the code.
>
> But a nice small improvement
> Reviewed-by: Heiko Stuebner <heiko@...ech.de>
>
>> and the last thing in setup was to clean the IPD,
>> so no reason to do it at the beginning of start.
>>
>> Signed-off-by: David Wu <david.wu@...k-chips.com>
>> Reviewed-by: Douglas Anderson <dianders@...omium.org>
>> ---
>> Change in v8:
>> - none
>>
>>   drivers/i2c/busses/i2c-rk3x.c | 1 -
>>   1 file changed, 1 deletion(-)
>>
>> diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c
>> index 1e2677a..9eeb4e5 100644
>> --- a/drivers/i2c/busses/i2c-rk3x.c
>> +++ b/drivers/i2c/busses/i2c-rk3x.c
>> @@ -174,7 +174,6 @@ static void rk3x_i2c_start(struct rk3x_i2c *i2c)
>>   {
>>   	u32 val;
>>
>> -	rk3x_i2c_clean_ipd(i2c);
>>   	i2c_writel(i2c, REG_INT_START, REG_IEN);
>>
>>   	/* enable adapter with correct mode, send START condition */
>
>
>
>