[PATCH v5 09/12] watchdog: wdt-uclass.c: handle all DM watchdogs in watchdog_reset()

[Rasmus Villemoes]

On 12/08/2021 08.50, Wolfgang Denk wrote:
> Dear Rasmus,
> 
> In message <20210811124800.2593226-10-rasmus.villemoes at prevas.dk> you wrote:
>>
>> +	ret = uclass_get(UCLASS_WDT, &uc);
>> +	if (ret) {
>> +		log_debug("Error getting UCLASS_WDT: %d\n", ret);
>> +		return 0;
>> +	}
> 
> Here the error goes silent, so we should fix the callers to report
> it.

The caller (singular) is the initr sequence, so returning an error is
effectively the same as halting the boot process, and as I've already
explained, I'm not going to change the semantics of initr_watchdog in
this regard.

Note that, as I've also already explained, the code which this is
replacing would also fail if uclass_get() fails (there are uclass_get()s
done inside the uclass_get_device_by_seq() and uclass_get_device()), and
would similarly just turn an error from one of those into "return 0".

Feel free to submit a patch if you feel a change in this area is in
order. That's completely unrelated to what these patches are trying to
achieve.

>> +	uclass_foreach_dev(dev, uc) {
>> +		ret = device_probe(dev);
>> +		if (ret) {
>> +			log_debug("Error probing %s: %d\n", dev->name, ret);
>> +			continue;
>>  		}
> 
> Here the situation is different.  The probing error is never
> reported anywhere.  Is it really a normal condition that a
> device_probe() fails here?

No, it is not a normal condition. I added the log_debug() after a
request from Simon.

Rasmus