arcmsr: fixed getting wrong configuration data

BugLink: http://bugs.launchpad.net/bugs/1559609

Fixed getting wrong configuration data of adapter type B and type D.
Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit 251e2d25)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

drivers/scsi/arcmsr/arcmsr_hba.c

@@ -2694,15 +2694,15 @@ static bool arcmsr_hbaB_get_config(struct AdapterControlBlock *acb)
 		acb->firm_model,
 		acb->firm_version);
 
-	acb->signature = readl(&reg->message_rwbuffer[1]);
+	acb->signature = readl(&reg->message_rwbuffer[0]);
 	/*firm_signature,1,00-03*/
-	acb->firm_request_len = readl(&reg->message_rwbuffer[2]);
+	acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
 	/*firm_request_len,1,04-07*/
-	acb->firm_numbers_queue = readl(&reg->message_rwbuffer[3]);
+	acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
 	/*firm_numbers_queue,2,08-11*/
-	acb->firm_sdram_size = readl(&reg->message_rwbuffer[4]);
+	acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
 	/*firm_sdram_size,3,12-15*/
-	acb->firm_hd_channels = readl(&reg->message_rwbuffer[5]);
+	acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
 	/*firm_ide_channels,4,16-19*/
 	acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
 	/*firm_ide_channels,4,16-19*/
@@ -2880,15 +2880,15 @@ static bool arcmsr_hbaD_get_config(struct AdapterControlBlock *acb)
 		iop_device_map++;
 		count--;
 	}
-	acb->signature = readl(&reg->msgcode_rwbuffer[1]);
+	acb->signature = readl(&reg->msgcode_rwbuffer[0]);
 	/*firm_signature,1,00-03*/
-	acb->firm_request_len = readl(&reg->msgcode_rwbuffer[2]);
+	acb->firm_request_len = readl(&reg->msgcode_rwbuffer[1]);
 	/*firm_request_len,1,04-07*/
-	acb->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[3]);
+	acb->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]);
 	/*firm_numbers_queue,2,08-11*/
-	acb->firm_sdram_size = readl(&reg->msgcode_rwbuffer[4]);
+	acb->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]);
 	/*firm_sdram_size,3,12-15*/
-	acb->firm_hd_channels = readl(&reg->msgcode_rwbuffer[5]);
+	acb->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]);
 	/*firm_hd_channels,4,16-19*/
 	acb->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]);
 	pr_notice("Areca RAID Controller%d: Model %s, F/W %s\n",