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authorDave C Boutcher <sleddog@us.ibm.com>2005-09-13 11:09:02 -0400
committerJames Bottomley <jejb@mulgrave.(none)>2005-09-13 11:15:10 -0400
commit154fb614df83086ceb18a2c19908154e78d4dc98 (patch)
tree4db0b4124cc635d4eadc245ea4716d13ec5d293b /drivers/scsi/ibmvscsi/ibmvscsi.c
parent1c5363153dc7ae694404e7732b4ce36eecc94ca7 (diff)
[SCSI] ibmvscsi compatibility fix
Linda Xie ever so gently pointed out that she had a patch to preserve compatibility with older SLES targets, and I told her we didn't need to push it to mainline. This patch explicitly checks the version of the IBMVSCSI target and ensures that large scatterlists are not sent to older targets. Signed-off-by: Linda Xie <lxie@us.ibm.com> Signed-off-by: Dave Boutcher <boutcher@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/ibmvscsi/ibmvscsi.c')
-rw-r--r--drivers/scsi/ibmvscsi/ibmvscsi.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index 5b14934ba861..ff25210b00ba 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -727,6 +727,16 @@ static void adapter_info_rsp(struct srp_event_struct *evt_struct)
727 if (hostdata->madapter_info.port_max_txu[0]) 727 if (hostdata->madapter_info.port_max_txu[0])
728 hostdata->host->max_sectors = 728 hostdata->host->max_sectors =
729 hostdata->madapter_info.port_max_txu[0] >> 9; 729 hostdata->madapter_info.port_max_txu[0] >> 9;
730
731 if (hostdata->madapter_info.os_type == 3 &&
732 strcmp(hostdata->madapter_info.srp_version, "1.6a") <= 0) {
733 printk("ibmvscsi: host (Ver. %s) doesn't support large"
734 "transfers\n",
735 hostdata->madapter_info.srp_version);
736 printk("ibmvscsi: limiting scatterlists to %d\n",
737 MAX_INDIRECT_BUFS);
738 hostdata->host->sg_tablesize = MAX_INDIRECT_BUFS;
739 }
730 } 740 }
731} 741}
732 742