Messages in this thread | ![/](/images/icornerl.gif) | | Date | Wed, 01 Nov 2006 00:51:00 +0100 | From | (Joerg Schilling) | Subject | Re: SCSI over USB showstopper bug? |
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Arjan van de Ven <arjan@infradead.org> wrote:
> On Tue, 2006-10-31 at 23:08 +0100, Joerg Schilling wrote: > > Hi, > > > > it looks as if SG_GET_RESERVED_SIZE & SG_SET_RESERVED_SIZE > > are not in interaction with the underlying SCSI transport. > > > > Programs like readcd and cdda2wav that try to get very large SCSI > > transfer buffers get a confirmation for nearly any SCSI transfer size > > but later when readcd/cdda2wav try to transfer data with an > > actual SCSI command, they fail with ENOMEM. > > > > Correct fix: let sg.c make a callback to the underlying SCSI transport > > and let it get a confirmation tfor the buffer size. > > > > Quick and dirty fix: reduce the maximum allowed DMA size to the smallest > > max DMA size of all SCSI transports. > > real good fix: > > use SG_IO on the device directly that checks this already
From looking into the source, this claim seems to be wrong.
Jörg
-- EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin js@cs.tu-berlin.de (uni) schilling@fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/ URL: http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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