Messages in this thread | | | Date | Tue, 8 May 2007 18:14:44 +0200 | From | Jens Axboe <> | Subject | Re: [PATCH]: Fix old SCSI adapter crashes with CD-ROM (take 2) |
| |
On Tue, May 08 2007, Alan Cox wrote: > The CD-ROM layer doesn't bounce requests for old ISA controllers (and > nor should it). However they get injected into the SCSI layer via > sr_ioctl which also doesn't bounce them and SCSI then passes the buffer > along to a device with unchecked_isa_dma set which either panics or > truncates the buffer to 24bits. > > According to Jens the right long term fix is for the CD layer to route > the requests differently but in the mean time this has been tested by a > victim and verified to sort the problem out. For the other 99.9% of users > it's a no-op and doesn't bounce data. > > Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Christoph passed me his patch to get rid of ->generic_packet() in the cdrom layer, so the work is almost complete. This patch is fine as a work-around until that gets merged, though.
-- Jens Axboe
- 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/
| |