linux-kernel - Re: [PATCH] i2c: bcm-iproc: Add i2c recovery support

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Date:   Thu, 3 Jun 2021 10:01:08 -0700
From:   Ray Jui <ray.jui@...adcom.com>
To:     Chris Packham <Chris.Packham@...iedtelesis.co.nz>,
        "wsa@...nel.org" <wsa@...nel.org>,
        "rjui@...adcom.com" <rjui@...adcom.com>,
        "sbranden@...adcom.com" <sbranden@...adcom.com>,
        "bcm-kernel-feedback-list@...adcom.com" 
        <bcm-kernel-feedback-list@...adcom.com>
Cc:     "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Richard Laing <Richard.Laing@...iedtelesis.co.nz>
Subject: Re: [PATCH] i2c: bcm-iproc: Add i2c recovery support



On 6/1/2021 7:32 PM, Chris Packham wrote:
> 
> On 2/06/21 9:03 am, Ray Jui wrote:
>>
>> On 5/30/2021 3:56 PM, Chris Packham wrote:
>>> From: Richard Laing <richard.laing@...iedtelesis.co.nz>
>>>
>>> The bcm-iproc controller can put the SDA/SCL lines into bit-bang mode,
>>> make use of this to support i2c bus recovery.
>>>
>>> Signed-off-by: Richard Laing <richard.laing@...iedtelesis.co.nz>
>>> Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
>>> ---
> <snip>
>> +
>>> +static struct i2c_bus_recovery_info bcm_iproc_recovery_info = {
>> static const struct ...
> 
> The kernel test bot doesn't like the suggestion.
> 
>  >> drivers/i2c/busses/i2c-bcm-iproc.c:1264:26: error: assigning to 
> 'struct i2c_bus_recovery_info *' from 'const struct 
> i2c_bus_recovery_info *' discards qualifiers 
> [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
> 
>             adap->bus_recovery_info = &bcm_iproc_recovery_info;
>                                     ^ ~~~~~~~~~~~~~~~~~~~~~~~~
> 
> I can see why. Are you happy for me to drop the const in v3? Or perhaps 
> you have a better suggestion.
> 

Yeah of course. Please drop it. Sorry I missed that while making that
suggestion.

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