On Mon, 30 Nov 2009, Stephan Diestelhorst wrote: > Am Freitag 27 November 2009 18:47:10 schrieb Alan Stern: > > > That would be fine with me. Are there any adverse effects one should > > > watch out for? > > > > Well, you wouldn't want this to kick in if you were running a very busy > > server, or if you wanted to guarantee low latency or use a realtime > > (RT) kernel. None of these is likely to crop up with a netbook. :-) > > Actually I have an RT kernel installed on this machine. AFAICS, these > delays could actually be made interruptible, at least this particular > one. No, it can't. The delay occurs while the driver holds an uninterruptible spinlock. If the problem were more widespread we'd use a timer to get around it, so that an uninterruptible delay wouldn't be needed. That approach would require larger changes to the driver. Alan Stern -- 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
