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

From: Chris Packham
Date: Tue Jun 01 2021 - 22:32:24 EST



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@xxxxxxxxxxxxxxxxxxx>
>>
>> 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@xxxxxxxxxxxxxxxxxxx>
>> Signed-off-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx>
>> ---
<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.