Alexander Motin <[email protected]> wrote: > > The question still remains whether the previous implementation did return > > resid > >> 0 in some cases. In this case, I would need to implement both variants in > >> the > > libscg adaption layer and I would need to know whether I am running on an > > old > > version or on a new version kernel. Do you know of a simple method to > > implement > > this distinction? > > Yes, some drivers were permanently reporting zero resid, while others > (mostly real SCSI) were reporting proper values. Now it is the same, > just more cases should work properly. > > Why do you want/need to distinguish them? You should already handle > non-zero resid properly. Zero resid may be wrong in some cases, but at > first I don't see fatal problem from it and at second I don't see what > can you do about it. > > If I am missing something - sorry, explain it to me please.
Compare the number of sense bytes I like to request (18) with the number previous FreeBSD versions did actually request. It is obvious that in case there is a resid reported onm an old kernel, libscg (with your chanhge) would believe that probably less that the absolute minumum of sense data is available. Jörg -- EMail:[email protected] (home) Jörg Schilling D-13353 Berlin [email protected] (uni) [email protected] (work) Blog: http://schily.blogspot.com/ URL: http://cdrecord.berlios.de/private/ ftp://ftp.berlios.de/pub/schily _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
