[SCSI] aic94xx: Don't eat TMF_QUERY_TASK results

In this driver, TMF_QUERY_TASK translates to QUERY_SSP_TASK.  The
sequencer, it seems, is perfectly happy sending us a SSP response, which
this function promptly "converts" into TMF_RESP_FUNC_FAILED.  This leads to
the SAS EH making bad decisions based on bad data, so we should not perform
the conversion in this case.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/scsi/aic94xx/aic94xx_tmf.c b/drivers/scsi/aic94xx/aic94xx_tmf.c
index 61234384503b..fd5269e086a6 100644
--- a/drivers/scsi/aic94xx/aic94xx_tmf.c
+++ b/drivers/scsi/aic94xx/aic94xx_tmf.c
@@ -566,6 +566,11 @@ static int asd_initiate_ssp_tmf(struct domain_device *dev, u8 *lun,
                 res = TMF_RESP_FUNC_ESUPP;
                 break;
         default:
+                if (tmf == TMF_QUERY_TASK) {
+                        ASD_DPRINTK("%s: QUERY_SSP_TASK response: 0x%x\n",
+                                    __FUNCTION__, res);
+                        break;
+                }
                 ASD_DPRINTK("%s: converting result 0x%x to TMF_RESP_FUNC_FAILED\n",
                             __FUNCTION__, res);
                 res = TMF_RESP_FUNC_FAILED;