Re: [alsa-devel] [PATCH 08/14] soundwire: Add Slave status handling helpers

[Pierre-Louis Bossart]

> > > +		if (found == false) {
> > > +			/* TODO: Park this device in Group 13 */
> > > +			dev_err(bus->dev, "Slave Entry not found");
> >
> > No break here?  Otherwise...
>
> Thats intentional. We want to still read next device that show up
>
> > > +		}
> > > +
> > > +	} while (ret == 0);
> >
> > ... the outer loop may go endlessly.
> > This condition doesn't look effective.
>
> not really. We cant keep reading successfully. At some point all slaves will
> ignore and return ENODATA and we exit. Bus errors will also make it exit
>
> BUT given that we have seen stuff i am inclined to add a counter, we cant
> have more than 11 device so that's a sane value to use :)

Yep. Keep in mind however that there could be theoretical corner cases: 
if a device is enumerated, loses sync and becomes attached again while 
you deal with others, you'd have more than 11 iterations.