On Mon, 2 Feb 2004, Frank Barknecht wrote: > BTW: Fernando, it seems, as if we have to sell our Quattros soon. Read > this thread (bottom to top) for details: > http://marc.theaimsgroup.com/?t=107564984700001&r=1&w=2 >
For those who do not want to read through a huge bunch of posts to figure out what he was refering to, it seems thati t he quattro reports that it has 4 alternate settings for an interface, but numbers them 0134. This is illegal under the usb spec, because the max setting number must be one less than the total number of possible settings. Kernel 2.6 now enforces that since there is a worry that using more might corrupt the kernel in some way. (I assume some data structure is assigned to take up to N entries, and if there is an setting numbered N or greater, it will go off the end of the assigned data structure.) Of course, Linux usb could be more conservative and assign N+1 items instead, just for such non-compliant devices. Or reject the settings which violate the number (eg number 4 above). But there seems to be a bit of a religeous position-- only the virtuous deserve linux-- being taken. (Of course maudio should be compliant, and of course pressure should be put on them, but they do not give a damn about Linux from what I have seen, so such pressure is not liable to be productive.) ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
