on 05/04/2011 15:55 Hans Petter Selasky said the following: > On Tuesday 05 April 2011 14:50:43 Andriy Gapon wrote: >> >> I believe that newbus already supports ordering of children on a bus. >> >> BTW, does USB have to pass anything from probe to attach? > > Mostly only the driver info field. To avoid duplicate lookups. > >> Duplicate lookup is of course not very nice, but duplicate probing pass is >> not nice either. > > This can all be avoided if the bus-drivers are sorted correctly before > probing! Well, I think that that's what probe priorities actually for. I also think that typically ivars should be set by a bus driver. So maybe it's not such a good idea to pass data from probe to attach via ivars in child drivers. But I could be mistaken about that. Practically speaking, you most likely don't have to worry about that for drivers that return BUS_PROBE_SPECIFIC (=0) from their probe methods. And there is only a few "generic" drivers that can be handled on a case by case basis. -- Andriy GaponReceived on Tue Apr 05 2011 - 14:45:54 UTC
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