On Sun, Jun 21, 2009 at 10:05:51PM +0200, Oliver Neukum wrote: > Am Sonntag, 21. Juni 2009 21:43:52 schrieb Josua Dietze: > > Oliver Neukum schrieb: > > > Am Sonntag, 21. Juni 2009 18:51:44 schrieb Josua Dietze: > > >> I have accumulated some information about these weird hybrid > > >> devices, mostly wireless modems. I am now convinced that ambiguities > > >> and side effects can be handled when switching these devices in the > > >> usb-storage code. > > > > > > The question is whether this needs to be done in kernel space at all. > > > We do need this code in kernel space if we want to do reset_resume() > > > for those devices, but we'd need a lot more infrastructure which we don't > > > have right now. > > > > Now I'm confused: I thought it was agreed to add switching functions > > to the kernel ... > > > > If this is not wanted, why are there such functions for Option, > > Huawei and Sierra devices? > > I don't know. Presumably there was a good reason. Go ahead, > implementing this is fine to me. I happen to be a big fan of doing this in userspace. That said, the vendors want a good "out of the box" experience, and there is no 'autorun' in linux to run a switcher program which is on the virtual storage device. So, I guess there isn't a "good reason", but there is a "reason". That said, I expect the vendors who have submitted these patches to actually maintain them; so far, that's been good. Matt -- Matthew Dharm Home: mdharm-usb@xxxxxxxxxxxxxxxxxx Maintainer, Linux USB Mass Storage Driver I say, what are all those naked people doing? -- Big client to Stef User Friendly, 12/14/1997
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