On Thu, Jan 17, 2013 at 05:44:45PM +0100, Peter Stuge wrote: > Greg KH wrote: > > Ok, given that this is due to really broken hardware, and the use case > > is quite rare, and the patch doesn't really solve the problem, I'll > > drop it from my queue. > > No protest against dropping the patch - but just a note that in the > libusb community we are really big fans of the way (some?) BSD > systems allow both a kernel driver *and* userspace to open a device > at the same time - doing locking when the interfaces is actually > being used by someone. > > For USB storage this would mean that unless a filesystem has been > mounted or dd is running on the block device, usbfs could claim the > storage interface *while* the block device exists. > > It is understood that this may well require quite a bit of surgery in > the kernel, but it's certainly a spiffy solution! It's also ripe for problems and data loss, and nothing that I want to see happen in Linux, sorry. I can't believe the BSD developers are ok with this, normally they are quite sane compared to us looney Linux developers :) greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
