[Patch] ibmvscsi compatibility fix

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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 

Andrew, while this stuff usually goes through James, it would
probably make Serge happier if you could pick it up for the next

Signed-off-by: Linda Xie <[email protected]>
Signed-off-by: Dave Boutcher <[email protected]>

--- linux-2.6.13-mm3-orig/drivers/scsi/ibmvscsi/ibmvscsi.c	2005-09-13 09:50:31.000000000 -0500
+++ linux-	2005-09-13 09:09:41.000000000 -0500
@@ -727,6 +727,16 @@
 		if (hostdata->madapter_info.port_max_txu[0]) 
 			hostdata->host->max_sectors = 
 				hostdata->madapter_info.port_max_txu[0] >> 9;
+		if (hostdata->madapter_info.os_type == 3 &&
+		    strcmp(hostdata->madapter_info.srp_version, "1.6a") <= 0) {
+			printk("ibmvscsi: host (Ver. %s) doesn't support large"
+			       "transfers\n",
+			       hostdata->madapter_info.srp_version);
+			printk("ibmvscsi: limiting scatterlists to %d\n",
+			       MAX_INDIRECT_BUFS);
+			hostdata->host->sg_tablesize = MAX_INDIRECT_BUFS;
+		}
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