On 28/07/06 17:31 -0500, Richard Smith wrote: > >follow the link from the olpc linuxbios page. > > > >I am sorry, this is a crappy video. I will try to do a better one. Also, > >my voice is too low. > > I think your rants about how slow the USB disk fobs are may be a > little inaccurate. > > Linux has a built in 5 second delay while it "waits for the device to > settle" > > In an upcoming product we use a custom USB stack and I've used it with > plenty (so far 10 different mfgs) of disk fobs that are ready for use > after a 500mS reset.
Its not the device - its the kernel stack enumeration thats the problem. It takes time to enumerate the mass storage devices. Why? I have no idea, but not a single mass storage unit I have here (and I have enough to shame Best Buy) is available immediately after the kernel goes into user space. > I bet there was some old usb key that was a little slow and someone > stuck a way overkill delay in there to be safe. > > Perhapas we should set that delay to 0 and see how many fobs still work. I'm willing to bet 0. Any takers? Jordan -- Jordan Crouse Senior Linux Engineer Advanced Micro Devices, Inc. <www.amd.com/embeddedprocessors> _______________________________________________ Devel mailing list [email protected] http://mailman.laptop.org/mailman/listinfo/devel
