diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index ff283d23788a..401ed67cf4c1 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -3547,7 +3547,6 @@ static int megasas_create_frame_pool(struct megasas_instance *instance)
 	int i;
 	u32 max_cmd;
 	u32 sge_sz;
-	u32 sgl_sz;
 	u32 total_sz;
 	u32 frame_count;
 	struct megasas_cmd *cmd;
@@ -3566,24 +3565,23 @@ static int megasas_create_frame_pool(struct megasas_instance *instance)
 	}
 
 	/*
-	 * Calculated the number of 64byte frames required for SGL
+	 * For MFI controllers.
+	 * max_num_sge = 60
+	 * max_sge_sz  = 16 byte (sizeof megasas_sge_skinny)
+	 * Total 960 byte (15 MFI frame of 64 byte)
+	 *
+	 * Fusion adapter require only 3 extra frame.
+	 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
+	 * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
+	 * Total 192 byte (3 MFI frame of 64 byte)
 	 */
-	sgl_sz = sge_sz * instance->max_num_sge;
-	frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
-	frame_count = 15;
-
-	/*
-	 * We need one extra frame for the MFI command
-	 */
-	frame_count++;
-
+	frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1);
 	total_sz = MEGAMFI_FRAME_SIZE * frame_count;
 	/*
 	 * Use DMA pool facility provided by PCI layer
 	 */
 	instance->frame_dma_pool = pci_pool_create("megasas frame pool",
-						   instance->pdev, total_sz, 64,
-						   0);
+					instance->pdev, total_sz, 256, 0);
 
 	if (!instance->frame_dma_pool) {
 		printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c
index 460c6a3d4ade..7cae1c25c9a9 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fp.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fp.c
@@ -172,6 +172,7 @@ void MR_PopulateDrvRaidMap(struct megasas_instance *instance)
 	struct MR_FW_RAID_MAP_ALL     *fw_map_old    = NULL;
 	struct MR_FW_RAID_MAP         *pFwRaidMap    = NULL;
 	int i;
+	u16 ld_count;
 
 
 	struct MR_DRV_RAID_MAP_ALL *drv_map =
@@ -191,9 +192,10 @@ void MR_PopulateDrvRaidMap(struct megasas_instance *instance)
 		fw_map_old = (struct MR_FW_RAID_MAP_ALL *)
 			fusion->ld_map[(instance->map_id & 1)];
 		pFwRaidMap = &fw_map_old->raidMap;
+		ld_count = (u16)le32_to_cpu(pFwRaidMap->ldCount);
 
 #if VD_EXT_DEBUG
-		for (i = 0; i < le16_to_cpu(pFwRaidMap->ldCount); i++) {
+		for (i = 0; i < ld_count; i++) {
 			dev_dbg(&instance->pdev->dev, "(%d) :Index 0x%x "
 				"Target Id 0x%x Seq Num 0x%x Size 0/%llx\n",
 				instance->unique_id, i,
@@ -205,12 +207,12 @@ void MR_PopulateDrvRaidMap(struct megasas_instance *instance)
 
 		memset(drv_map, 0, fusion->drv_map_sz);
 		pDrvRaidMap->totalSize = pFwRaidMap->totalSize;
-		pDrvRaidMap->ldCount = (__le16)pFwRaidMap->ldCount;
+		pDrvRaidMap->ldCount = (__le16)cpu_to_le16(ld_count);
 		pDrvRaidMap->fpPdIoTimeoutSec = pFwRaidMap->fpPdIoTimeoutSec;
 		for (i = 0; i < MAX_RAIDMAP_LOGICAL_DRIVES + MAX_RAIDMAP_VIEWS; i++)
 			pDrvRaidMap->ldTgtIdToLd[i] =
 				(u8)pFwRaidMap->ldTgtIdToLd[i];
-		for (i = 0; i < le16_to_cpu(pDrvRaidMap->ldCount); i++) {
+		for (i = 0; i < ld_count; i++) {
 			pDrvRaidMap->ldSpanMap[i] = pFwRaidMap->ldSpanMap[i];
 #if VD_EXT_DEBUG
 			dev_dbg(&instance->pdev->dev,
@@ -252,7 +254,7 @@ u8 MR_ValidateMapInfo(struct megasas_instance *instance)
 	struct LD_LOAD_BALANCE_INFO *lbInfo;
 	PLD_SPAN_INFO ldSpanInfo;
 	struct MR_LD_RAID         *raid;
-	int ldCount, num_lds;
+	u16 ldCount, num_lds;
 	u16 ld;
 	u32 expected_size;
 
@@ -356,7 +358,7 @@ static int getSpanInfo(struct MR_DRV_RAID_MAP_ALL *map,
 
 	for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES_EXT; ldCount++) {
 		ld = MR_TargetIdToLdGet(ldCount, map);
-			if (ld >= MAX_LOGICAL_DRIVES_EXT)
+			if (ld >= (MAX_LOGICAL_DRIVES_EXT - 1))
 				continue;
 		raid = MR_LdRaidGet(ld, map);
 		dev_dbg(&instance->pdev->dev, "LD %x: span_depth=%x\n",
@@ -1157,7 +1159,7 @@ void mr_update_span_set(struct MR_DRV_RAID_MAP_ALL *map,
 
 	for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES_EXT; ldCount++) {
 		ld = MR_TargetIdToLdGet(ldCount, map);
-		if (ld >= MAX_LOGICAL_DRIVES_EXT)
+		if (ld >= (MAX_LOGICAL_DRIVES_EXT - 1))
 			continue;
 		raid = MR_LdRaidGet(ld, map);
 		for (element = 0; element < MAX_QUAD_DEPTH; element++) {
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 71557f64bb5e..b5362c196000 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -698,12 +698,11 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 		cpu_to_le32(lower_32_bits(ioc_init_handle));
 	init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
 
-	req_desc.Words = 0;
+	req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
+	req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
 	req_desc.MFAIo.RequestFlags =
 		(MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
-		 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
-	cpu_to_le32s((u32 *)&req_desc.MFAIo);
-	req_desc.Words |= cpu_to_le64(cmd->frame_phys_addr);
+		MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
 
 	/*
 	 * disable the intr before firing the init frame
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
index 5ab7daee11be..56e6db2d5874 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -306,14 +306,9 @@ struct MPI2_RAID_SCSI_IO_REQUEST {
  * MPT RAID MFA IO Descriptor.
  */
 struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR {
-#if   defined(__BIG_ENDIAN_BITFIELD)
-	u32     MessageAddress1:24; /* bits 31:8*/
 	u32     RequestFlags:8;
-#else
-	u32     RequestFlags:8;
-	u32     MessageAddress1:24; /* bits 31:8*/
-#endif
-	u32     MessageAddress2;      /* bits 61:32 */
+	u32     MessageAddress1:24;
+	u32     MessageAddress2;
 };
 
 /* Default Request Descriptor */