No, it's not in the specs. But it's in the field. Some devices are even more delicate than that, hence the customized clear_halt code in usb-storage.
Matt On Sat, May 25, 2002 at 05:53:21PM -0400, Johannes Erdfelt wrote: > On Sat, May 25, 2002, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > > There's the much discussed USB storage bulk/control problem > > > which is a slightly different, but still related locking issue. > > > > Can you tell me all about it? Or give pointers? > > > > [2.5.18 hangs, 2.5.18 with 2.5.15 usr/storage fails with uhci > > but works with alternate uhci; it smells a bit like a locking > > problem; plan to look at it further soon] > > It's probably not related to the issue you're having. > > Basically, you can't do a control transfer in between a bulk transfer to > a USB storage device. It's apparentely in the specs. > > In the real world, it's something that doesn't happen. The USB storage > driver knows aobut that rule and prevents against it, but another > (userspace most likely) app can possibly interfere. > > JE > > > _______________________________________________________________ > > Don't miss the 2002 Sprint PCS Application Developer's Conference > August 25-28 in Las Vegas -- http://devcon.sprintpcs.com/adp/index.cfm > > _______________________________________________ > [EMAIL PROTECTED] > To unsubscribe, use the last form field at: > https://lists.sourceforge.net/lists/listinfo/linux-usb-devel -- Matthew Dharm Home: [EMAIL PROTECTED] Maintainer, Linux USB Mass Storage Driver IT KEEPS ASKING ME WHERE I WANT TO GO TODAY! I DONT WANT TO GO ANYWHERE! -- Greg User Friendly, 11/28/97
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