linux-kernel - Re: [PATCH v2] i2c: pxa: move to generic GPIO recovery

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Date:   Sun, 4 Oct 2020 09:52:34 +0000
From:   <Codrin.Ciubotariu@...rochip.com>
To:     <linux@...linux.org.uk>
CC:     <linux-i2c@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <wsa@...nel.org>,
        <alpawi@...zon.com>
Subject: Re: [PATCH v2] i2c: pxa: move to generic GPIO recovery

On 04.10.2020 12:24, Russell King - ARM Linux admin wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> On Sun, Oct 04, 2020 at 12:16:56PM +0300, Codrin Ciubotariu wrote:
>> Starting with
>> commit 75820314de26 ("i2c: core: add generic I2C GPIO recovery")
>> GPIO bus recovery is supported by the I2C core, so we can remove the
>> driver implementation and use that one instead.
>>
>> Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
>> ---
>>
>> This patch is not tested.
>>
>> Changes in v2:
>>   - readded the pinctrl state change to default from the
>>     unprepare_recovery callback;
> 
> I don't think you've build tested this patch...

You're right, sorry about that. I used a wrong config... Will fix it 
right away.

Best regards,
Codrin

> 
>> diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
>> index 35ca2c02c9b9..006cc1d5931f 100644
>> --- a/drivers/i2c/busses/i2c-pxa.c
>> +++ b/drivers/i2c/busses/i2c-pxa.c
>> @@ -264,9 +264,6 @@ struct pxa_i2c {
>>        u32                     hs_mask;
>>
>>        struct i2c_bus_recovery_info recovery;
>> -     struct pinctrl          *pinctrl;
>> -     struct pinctrl_state    *pinctrl_default;
>> -     struct pinctrl_state    *pinctrl_recovery;
> 
> i2c_pxa_unprepare_recovery() refers to pinctrl and pinctrl_default which
> you've retained in this version of the patch, but you've deleted the
> members from this structure - which will lead to a build error.
> 
> --
> RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
> FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
>