Re: [PATCH 1/5] i3c: master: Move rstdaa error suppression

[Adrian Hunter]

On 09/03/2026 14:17, Jorge Marques wrote:
> On Mon, Mar 09, 2026 at 01:39:36PM +0200, Adrian Hunter wrote:
>> On 08/03/2026 18:47, Jorge Marques wrote:
>>> --- a/drivers/i3c/master.c
>>> +++ b/drivers/i3c/master.c
>>> @@ -1016,6 +1016,10 @@ static int i3c_master_rstdaa_locked(struct i3c_master_controller *master,
>>>  	ret = i3c_master_send_ccc_cmd_locked(master, &cmd);
>>>  	i3c_ccc_cmd_dest_cleanup(&dest);
>>>  
>>> +	/* No active devices on the bus. */
>>> +	if (ret && cmd.err == I3C_ERROR_M2)
>>> +		ret = 0;
>>> +
>>>  	return ret;
>>>  }
>>>  
>>> @@ -1785,7 +1789,6 @@ i3c_master_register_new_i3c_devs(struct i3c_master_controller *master)
>>>   */
>>>  int i3c_master_do_daa_ext(struct i3c_master_controller *master, bool rstdaa)
>>>  {
>>> -	int rstret = 0;
>>>  	int ret;
>>>  
>>>  	ret = i3c_master_rpm_get(master);
>>> @@ -1795,9 +1798,9 @@ int i3c_master_do_daa_ext(struct i3c_master_controller *master, bool rstdaa)
>>>  	i3c_bus_maintenance_lock(&master->bus);
>>>  
>>>  	if (rstdaa) {
>>> -		rstret = i3c_master_rstdaa_locked(master, I3C_BROADCAST_ADDR);
>>> -		if (rstret == I3C_ERROR_M2)
>>> -			rstret = 0;
>>> +		ret = i3c_master_rstdaa_locked(master, I3C_BROADCAST_ADDR);
>>> +		if (ret)
>>> +			goto out;
>>
>> This is an unrelated change.  The original intention was to perform
>> DAA even if RSTDAA fails.  If you really want this, it needs to be
>> a separate patch with separate justification.
>>
>>>  	}
> Hi Adrian, handling I3C_ERROR_M2 is unchanged.
> 
> The intention is to perform the DAA if the RSTDAA fail due to a
> I3C_ERROR_M2, this behaviour is unchanged,
No, the intention was as the code is written.  DAA is done
irrespective of whether RSTDAA fails.  The behaviour has changed:
before it always does DAA, after it does not always.