megaraid_sas: dndinaness related bug fixes

This patch addresses few endianness related bug fixes.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>

2 files changed, 16 insertions, 14 deletions

diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c
index 246574bad910..460c6a3d4ade 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fp.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fp.c
@@ -185,14 +185,15 @@ void MR_PopulateDrvRaidMap(struct megasas_instance *instance)
                 /* New Raid map will not set totalSize, so keep expected value
                  * for legacy code in ValidateMapInfo
                  */
-                pDrvRaidMap->totalSize = sizeof(struct MR_FW_RAID_MAP_EXT);
+                pDrvRaidMap->totalSize =
+                        cpu_to_le32(sizeof(struct MR_FW_RAID_MAP_EXT));
         } else {
                 fw_map_old = (struct MR_FW_RAID_MAP_ALL *)
                         fusion->ld_map[(instance->map_id & 1)];
                 pFwRaidMap = &fw_map_old->raidMap;
 
 #if VD_EXT_DEBUG
-                for (i = 0; i < pFwRaidMap->ldCount; i++) {
+                for (i = 0; i < le16_to_cpu(pFwRaidMap->ldCount); 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,
@@ -204,12 +205,12 @@ void MR_PopulateDrvRaidMap(struct megasas_instance *instance)
 
                 memset(drv_map, 0, fusion->drv_map_sz);
                 pDrvRaidMap->totalSize = pFwRaidMap->totalSize;
-                pDrvRaidMap->ldCount = pFwRaidMap->ldCount;
+                pDrvRaidMap->ldCount = (__le16)pFwRaidMap->ldCount;
                 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 < pDrvRaidMap->ldCount; i++) {
+                for (i = 0; i < le16_to_cpu(pDrvRaidMap->ldCount); i++) {
                         pDrvRaidMap->ldSpanMap[i] = pFwRaidMap->ldSpanMap[i];
 #if VD_EXT_DEBUG
                         dev_dbg(&instance->pdev->dev,
@@ -270,7 +271,7 @@ u8 MR_ValidateMapInfo(struct megasas_instance *instance)
         else
                 expected_size =
                         (sizeof(struct MR_FW_RAID_MAP) - sizeof(struct MR_LD_SPAN_MAP) +
-                        (sizeof(struct MR_LD_SPAN_MAP) * le32_to_cpu(pDrvRaidMap->ldCount)));
+                        (sizeof(struct MR_LD_SPAN_MAP) * le16_to_cpu(pDrvRaidMap->ldCount)));
 
         if (le32_to_cpu(pDrvRaidMap->totalSize) != expected_size) {
                 dev_err(&instance->pdev->dev, "map info structure size 0x%x is not matching with ld count\n",
@@ -286,7 +287,7 @@ u8 MR_ValidateMapInfo(struct megasas_instance *instance)
 
         mr_update_load_balance_params(drv_map, lbInfo);
 
-        num_lds = le32_to_cpu(drv_map->raidMap.ldCount);
+        num_lds = le16_to_cpu(drv_map->raidMap.ldCount);
 
         /*Convert Raid capability values to CPU arch */
         for (ldCount = 0; ldCount < num_lds; ldCount++) {
@@ -459,7 +460,7 @@ u32 mr_spanset_get_span_block(struct megasas_instance *instance,
                                 quad = &map->raidMap.ldSpanMap[ld].
                                         spanBlock[span].
                                         block_span_info.quad[info];
-                                if (le32_to_cpu(quad->diff == 0))
+                                if (le32_to_cpu(quad->diff) == 0)
                                         return SPAN_INVALID;
                                 if (le64_to_cpu(quad->logStart) <= row  &&
                                         row <= le64_to_cpu(quad->logEnd)  &&
@@ -522,7 +523,7 @@ static u64  get_row_from_strip(struct megasas_instance *instance,
                                 span_set->span_row_data_width) * span_set->diff;
                 for (span = 0, span_offset = 0; span < raid->spanDepth; span++)
                         if (le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span].
-                                block_span_info.noElements >= info+1)) {
+                                block_span_info.noElements) >= info+1) {
                                 if (strip_offset >=
                                         span_set->strip_offset[span])
                                         span_offset++;
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 4e259edd467a..71557f64bb5e 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -882,7 +882,7 @@ megasas_sync_map_info(struct megasas_instance *instance)
 
         map = fusion->ld_drv_map[instance->map_id & 1];
 
-        num_lds = le32_to_cpu(map->raidMap.ldCount);
+        num_lds = le16_to_cpu(map->raidMap.ldCount);
 
         dcmd = &cmd->frame->dcmd;
 
@@ -1137,9 +1137,10 @@ megasas_fire_cmd_fusion(struct megasas_instance *instance,
                         struct megasas_register_set __iomem *regs)
 {
 #if defined(writeq) && defined(CONFIG_64BIT)
-        u64 req_data = (((u64)req_desc_hi << 32) | (u32)req_desc_lo);
+        u64 req_data = (((u64)le32_to_cpu(req_desc_hi) << 32) |
+                        le32_to_cpu(req_desc_lo));
 
-        writeq(le64_to_cpu(req_data), &(regs)->inbound_low_queue_port);
+        writeq(req_data, &(regs)->inbound_low_queue_port);
 #else
         unsigned long flags;
 
@@ -1337,7 +1338,7 @@ megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
                 /* Logical block reference tag */
                 io_request->CDB.EEDP32.PrimaryReferenceTag =
                         cpu_to_be32(ref_tag);
-                io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0xffff;
+                io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
                 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
 
                 /* Transfer length */
@@ -1733,7 +1734,7 @@ megasas_build_dcdb_fusion(struct megasas_instance *instance,
 
                 /* set RAID context values */
                 pRAID_Context->regLockFlags     = REGION_TYPE_SHARED_READ;
-                pRAID_Context->timeoutValue     = raid->fpIoTimeoutForLd;
+                pRAID_Context->timeoutValue     = cpu_to_le16(raid->fpIoTimeoutForLd);
                 pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
                 pRAID_Context->regLockRowLBA    = 0;
                 pRAID_Context->regLockLength    = 0;
@@ -2218,7 +2219,7 @@ build_mpt_mfi_pass_thru(struct megasas_instance *instance,
          * megasas_complete_cmd
          */
 
-        if (frame_hdr->flags & MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)
+        if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
                 cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
 
         fusion = instance->ctrl_context;