On Fri, 3 Jun 2005 17:12:16 -0500 Dmitry Torokhov <dmitry.torokhov at gmail.com> wrote: > On 6/3/05, Evgeniy Polyakov <johnpol at 2ka.mipt.ru> wrote: > > On Fri, 3 Jun 2005 16:46:48 -0500 > > Dmitry Torokhov <dmitry.torokhov at gmail.com> wrote: > > > > > On 6/3/05, Evgeniy Polyakov <johnpol at 2ka.mipt.ru> wrote: > > > > > > > > 6. I wrote reconnect feature: if on start there are no > > > > registered families all new devices will have defailt family, > > > > later when driver for appropriate family is loaded, slaves, > > > > which were faound earlier, will still have defult family instead > > > > of right one. Reconnect feature will force control thread to > > > > run through all master devices and all slaves found > > > > and search for slaves with default family id and try to reconnect > > > > them. > > > > > > Yep, start with one kludge and you'll end up with 10 more. > > > > > > Would you mind explaining why a w1 device has to be bound to a family > > > before it can show in sysfs? We don't have such limitation on other > > > buses, why is it needed for w1? > > > > Because w1 device does not have any sence without appropriate family driver. > > You may have a device without a driver for it. > > All buses support it - see dmesg when new device was added but there is > > no driver for that - usb bus magically says slot is used. > > Here is the same. > > > > You still have not answered the question - why a family (i.e. a > driver) is needed? I have bunch of PCI devices in my box that don't > have drivers and they show up in sysfs just fine. The same with other > buses. > > As it stands now you decided that you won't show devices without a > driver - then you realized that a "default" driver is needed - then > you realized that you need to reconnect when you load a "specialized" > driver. That's why I am saying start with one kludge and you'll end up > with 10 more. I hope you are kidding comparing PCI and w1. lspci just shows PCI config space access. w1 does not have nothing similar to it, so you just may not access w1 device like you can access PCI. In w1 there is no interrupt which can inform w1 bus master that there is a new device like in USB. You can only access to device using it's ID, but you must store it somewhere or search the whole bus each time. > -- > Dmitry Evgeniy Polyakov Only failure makes us experts. -- Theo de Raadt
