On Fri, May 22, 2015 at 05:10:44PM +0200, Tomas Henzl wrote: > >> I've updated to 6.62 and it appears to be working now; or rather, it has I've since gotten 6.64 from HP to test; which does not seem public yet. 6.64 actually fixes the issue for me. > An older issue for mptsas seems to handle a similar case > 2a1b7e575b [SCSI] mptsas: fix hangs caused by ATA pass-through > that might be for hpsa - > --- a/drivers/scsi/hpsa.c > +++ b/drivers/scsi/hpsa.c > @@ -1067,6 +1067,8 @@ static int hpsa_slave_alloc(struct scsi_device *sdev) > if (sd != NULL) > sdev->hostdata = sd; > spin_unlock_irqrestore(&h->devlock, flags); > + > + blk_queue_dma_alignment (sdev->request_queue, 512 - 1); > return 0; > } That does indeed seem _very_ similar; I'll have to defer to Mark Oelke and or Don Brace to say if the above is a useful alternative. Since they seem to now know what was the root cause. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html