[PATCH 7/9] aacraid: use scsi_host_busy_iter() in aac_wait_for_io_completion()

[Hannes Reinecke <hare@suse.de>]

Use the midlayer helper function to traverse outstanding commands.

Cc: Balsundar P <balsundar.p@microsemi.com>
Cc: Adaptec OEM Raid Solutions <aacraid@microsemi.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
 drivers/scsi/aacraid/comminit.c | 30 +++++++++++++-----------------
 1 file changed, 13 insertions(+), 17 deletions(-)

diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index f75878d773cf..89c0ca339ef5 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -272,29 +272,25 @@ static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem,
 	q->entries = qsize;
 }
 
+static bool wait_for_io_iter(struct scsi_cmnd *cmd, void *data, bool reserved)
+{
+	int *active = data;
+
+	if (cmd->SCp.phase == AAC_OWNER_FIRMWARE)
+		*active = 1;
+	return true;
+}
+
+/* scsi_block_requests() has been called, so no new request can be issued */
 static void aac_wait_for_io_completion(struct aac_dev *aac)
 {
-	unsigned long flagv = 0;
-	int i = 0;
+	int i;
 
 	for (i = 60; i; --i) {
-		struct scsi_device *dev;
-		struct scsi_cmnd *command;
 		int active = 0;
 
-		__shost_for_each_device(dev, aac->scsi_host_ptr) {
-			spin_lock_irqsave(&dev->list_lock, flagv);
-			list_for_each_entry(command, &dev->cmd_list, list) {
-				if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
-					active++;
-					break;
-				}
-			}
-			spin_unlock_irqrestore(&dev->list_lock, flagv);
-			if (active)
-				break;
-
-		}
+		scsi_host_busy_iter(aac->scsi_host_ptr,
+				    wait_for_io_iter, &active);
 		/*
 		 * We can exit If all the commands are complete
 		 */
-- 
2.16.4