scsi: qla2xxx: Use get_unaligned_*() instead of open-coding these functions

This patch improves readability and does not change any functionality.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Cc: Quinn Tran <qutran@marvell.com>
Cc: Martin Wilck <mwilck@suse.com>
Cc: Daniel Wagner <dwagner@suse.de>
Cc: Roman Bolshakov <r.bolshakov@yadro.com>
Link: https://lore.kernel.org/r/20191219005050.40193-1-bvanassche@acm.orgReviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_bsg.c

@@ -797,7 +797,7 @@ qla2x00_process_loopback(struct bsg_job *bsg_job)
 
 	if (atomic_read(&vha->loop_state) == LOOP_READY &&
 	    (ha->current_topology == ISP_CFG_F ||
-	    (le32_to_cpu(*(uint32_t *)req_data) == ELS_OPCODE_BYTE &&
+	    (get_unaligned_le32(req_data) == ELS_OPCODE_BYTE &&
 	     req_data_len == MAX_ELS_FRAME_PAYLOAD)) &&
 	    elreq.options == EXTERNAL_LOOPBACK) {
 		type = "FC_BSG_HST_VENDOR_ECHO_DIAG";

drivers/scsi/qla2xxx/qla_isr.c

@@ -2173,12 +2173,12 @@ qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
 	 * swab32 of the "data" field in the beginning of qla2x00_status_entry()
 	 * would make guard field appear at offset 2
 	 */
-	a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
-	a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
-	a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
-	e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
-	e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
-	e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
+	a_guard   = get_unaligned_le16(ap + 2);
+	a_app_tag = get_unaligned_le16(ap + 0);
+	a_ref_tag = get_unaligned_le32(ap + 4);
+	e_guard   = get_unaligned_le16(ep + 2);
+	e_app_tag = get_unaligned_le16(ep + 0);
+	e_ref_tag = get_unaligned_le32(ep + 4);
 
 	ql_dbg(ql_dbg_io, vha, 0x3023,
 	    "iocb(s) %p Returned STATUS.\n", sts24);

drivers/scsi/qla2xxx/qla_nx.c

@@ -1882,7 +1882,7 @@ qla82xx_set_product_offset(struct qla_hw_data *ha)
 static int
 qla82xx_validate_firmware_blob(scsi_qla_host_t *vha, uint8_t fw_type)
 {
-	__le32 val;
+	uint32_t val;
 	uint32_t min_size;
 	struct qla_hw_data *ha = vha->hw;
 	const struct firmware *fw = ha->hablob->fw;
@@ -1895,8 +1895,8 @@ qla82xx_validate_firmware_blob(scsi_qla_host_t *vha, uint8_t fw_type)
 
 		min_size = QLA82XX_URI_FW_MIN_SIZE;
 	} else {
-		val = cpu_to_le32(*(u32 *)&fw->data[QLA82XX_FW_MAGIC_OFFSET]);
-		if ((__force u32)val != QLA82XX_BDINFO_MAGIC)
+		val = get_unaligned_le32(&fw->data[QLA82XX_FW_MAGIC_OFFSET]);
+		if (val != QLA82XX_BDINFO_MAGIC)
 			return -EINVAL;
 
 		min_size = QLA82XX_FW_MIN_SIZE;

drivers/scsi/qla2xxx/qla_target.c

@@ -3457,13 +3457,13 @@ qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
 
 	cmd->trc_flags |= TRC_DIF_ERR;
 
-	cmd->a_guard   = be16_to_cpu(*(uint16_t *)(ap + 0));
-	cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
-	cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
+	cmd->a_guard   = get_unaligned_be16(ap + 0);
+	cmd->a_app_tag = get_unaligned_be16(ap + 2);
+	cmd->a_ref_tag = get_unaligned_be32(ap + 4);
 
-	cmd->e_guard   = be16_to_cpu(*(uint16_t *)(ep + 0));
-	cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
-	cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
+	cmd->e_guard   = get_unaligned_be16(ep + 0);
+	cmd->e_app_tag = get_unaligned_be16(ep + 2);
+	cmd->e_ref_tag = get_unaligned_be32(ep + 4);
 
 	ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
 	    "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);

drivers/scsi/qla2xxx/qla_target.h

@@ -379,8 +379,7 @@ static inline int get_datalen_for_atio(struct atio_from_isp *atio)
 {
 	int len = atio->u.isp24.fcp_cmnd.add_cdb_len;
 
-	return (be32_to_cpu(get_unaligned((uint32_t *)
-	    &atio->u.isp24.fcp_cmnd.add_cdb[len * 4])));
+	return get_unaligned_be32(&atio->u.isp24.fcp_cmnd.add_cdb[len * 4]);
 }
 
 #define CTIO_TYPE7 0x12 /* Continue target I/O entry (for 24xx) */