From: David Milburn Date: Fri, 25 Jan 2008 18:16:18 +0000 (-0600) Subject: [SCSI] aic7xxx: fix ahc_done check SCB_ACTIVE for tagged transactions X-Git-Tag: v2.6.25-rc1~1140^2~14 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=969ceffb6696ac361db9dbc33c83f855dbdb1528;p=linux-2.6 [SCSI] aic7xxx: fix ahc_done check SCB_ACTIVE for tagged transactions The driver only needs to check the SCB_ACTIVE flag if the SCB is not in the untagged queue. If the driver is in error recovery, you may end panic'ing on a TUR that is in the untagged queue. Attempting to queue an ABORT message CDB: 0x0 0x0 0x0 0x0 0x0 0x0 SCB 3 done'd twice This patch is included in Adaptec's 6.3.11 driver on their website. Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c index e310e41406..bff7f8c598 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_osm.c +++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c @@ -1658,9 +1658,12 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb) untagged_q = &(ahc->untagged_queues[target_offset]); TAILQ_REMOVE(untagged_q, scb, links.tqe); BUG_ON(!TAILQ_EMPTY(untagged_q)); - } - - if ((scb->flags & SCB_ACTIVE) == 0) { + } else if ((scb->flags & SCB_ACTIVE) == 0) { + /* + * Transactions aborted from the untagged queue may + * not have been dispatched to the controller, so + * only check the SCB_ACTIVE flag for tagged transactions. + */ printf("SCB %d done'd twice\n", scb->hscb->tag); ahc_dump_card_state(ahc); panic("Stopping for safety");