scsi: aacraid: replace aac_flush_ios() with midlayer helper

Use the midlayer helper scsi_host_complete_all_commands() to flush all
outstanding commands.

Link: https://lore.kernel.org/r/20200228075318.91255-7-hare@suse.deReviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Balsundar P <balsundar.p@microchip.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/aacraid/linit.c

@@ -1977,26 +1977,6 @@ static void aac_remove_one(struct pci_dev *pdev)
 	}
 }
 
-static void aac_flush_ios(struct aac_dev *aac)
-{
-	int i;
-	struct scsi_cmnd *cmd;
-
-	for (i = 0; i < aac->scsi_host_ptr->can_queue; i++) {
-		cmd = (struct scsi_cmnd *)aac->fibs[i].callback_data;
-		if (cmd && (cmd->SCp.phase == AAC_OWNER_FIRMWARE)) {
-			scsi_dma_unmap(cmd);
-
-			if (aac->handle_pci_error)
-				cmd->result = DID_NO_CONNECT << 16;
-			else
-				cmd->result = DID_RESET << 16;
-
-			cmd->scsi_done(cmd);
-		}
-	}
-}
-
 static pci_ers_result_t aac_pci_error_detected(struct pci_dev *pdev,
 					enum pci_channel_state error)
 {
@@ -2013,7 +1993,7 @@ static pci_ers_result_t aac_pci_error_detected(struct pci_dev *pdev,
 
 		scsi_block_requests(aac->scsi_host_ptr);
 		aac_cancel_rescan_worker(aac);
-		aac_flush_ios(aac);
+		scsi_host_complete_all_commands(shost, DID_NO_CONNECT);
 		aac_release_resources(aac);
 
 		pci_disable_pcie_error_reporting(pdev);
@@ -2023,7 +2003,7 @@ static pci_ers_result_t aac_pci_error_detected(struct pci_dev *pdev,
 	case pci_channel_io_perm_failure:
 		aac->handle_pci_error = 1;
 
-		aac_flush_ios(aac);
+		scsi_host_complete_all_commands(shost, DID_NO_CONNECT);
 		return PCI_ERS_RESULT_DISCONNECT;
 	}