diff -rupN old/drivers/scsi/megaraid/megaraid_sas.c new/drivers/scsi/megaraid/megaraid_sas.c
--- old/drivers/scsi/megaraid/megaraid_sas.c	2010-11-14 15:49:16.000000000 -0500
+++ new/drivers/scsi/megaraid/megaraid_sas.c	2010-11-14 15:54:32.000000000 -0500
@@ -3686,6 +3686,10 @@ static int megasas_io_attach(struct mega
 			instance->max_fw_cmds - MEGASAS_INT_CMDS;
 	host->this_id = instance->init_id;
 	host->sg_tablesize = instance->max_num_sge;
+
+	if (instance->fw_support_ieee)
+		instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
+
 	/*
 	 * Check if the module parameter value for max_sectors can be used
 	 */
diff -rupN old/drivers/scsi/megaraid/megaraid_sas.h new/drivers/scsi/megaraid/megaraid_sas.h
--- old/drivers/scsi/megaraid/megaraid_sas.h	2010-11-14 14:31:29.000000000 -0500
+++ new/drivers/scsi/megaraid/megaraid_sas.h	2010-11-14 14:35:28.000000000 -0500
@@ -708,6 +708,7 @@ struct megasas_ctrl_info {
 
 #define MEGASAS_MAX_NAME			32
 #define MEGASAS_MAX_SECTORS                    (2*1024)
+#define MEGASAS_MAX_SECTORS_IEEE               (2*128)
 #define MEGASAS_DBG_LVL				1
 
 #define MEGASAS_FW_BUSY				1