From: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Date: Wed, 27 Dec 2017 04:34:29 +0000 (-0800)
Subject: scsi: aacraid: Move code to wait for IO completion to shutdown func
X-Git-Tag: Ubuntu-5.0.0-8.9~3147^2~154
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=216ced02fa1638088d7908149d6500627b79b9f0;p=mirror_ubuntu-disco-kernel.git

scsi: aacraid: Move code to wait for IO completion to shutdown func

Ideally driver needs to wait for IO to be submitted or responded to before
shutdown.

Move code to wait for IO completion into shutdown path

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---

diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index 9eff246ba3a3..0dc7b5a4fea2 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -42,6 +42,8 @@
 #include <linux/completion.h>
 #include <linux/mm.h>
 #include <scsi/scsi_host.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_cmnd.h>
 
 #include "aacraid.h"
 
@@ -284,6 +286,38 @@ static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem,
 	q->entries = qsize;
 }
 
+static void aac_wait_for_io_completion(struct aac_dev *aac)
+{
+	unsigned long flagv = 0;
+	int i = 0;
+
+	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;
+
+		}
+		/*
+		 * We can exit If all the commands are complete
+		 */
+		if (active == 0)
+			break;
+		ssleep(1);
+	}
+}
+
 /**
  *	aac_send_shutdown		-	shutdown an adapter
  *	@dev: Adapter to shutdown
@@ -306,6 +340,8 @@ int aac_send_shutdown(struct aac_dev * dev)
 		mutex_unlock(&dev->ioctl_mutex);
 	}
 
+	aac_wait_for_io_completion(dev);
+
 	fibctx = aac_fib_alloc(dev);
 	if (!fibctx)
 		return -ENOMEM;
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index 32b8bdb97c18..9840bd3aee6c 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -1701,31 +1701,6 @@ int aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type)
 	 */
 	host = aac->scsi_host_ptr;
 	scsi_block_requests(host);
-	if (forced < 2) for (retval = 60; retval; --retval) {
-		struct scsi_device * dev;
-		struct scsi_cmnd * command;
-		int active = 0;
-
-		__shost_for_each_device(dev, host) {
-			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;
-
-		}
-		/*
-		 * We can exit If all the commands are complete
-		 */
-		if (active == 0)
-			break;
-		ssleep(1);
-	}
 
 	/* Quiesce build, flush cache, write through mode */
 	if (forced < 2)