3 files changed, 44 insertions, 2 deletions

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index ba84d9985ce7..54078bf8ab67 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -1341,6 +1341,8 @@ struct fib {
 #define AAC_EXPOSE_DISK		0
 #define AAC_HIDE_DISK			3
 
+#define AAC_SAFW_RESCAN_DELAY  10
+
 struct aac_hba_map_info {
 	__le32	rmw_nexus;		/* nexus for native HBA devices */
 	u8		devtype;	/* device type */
@@ -1611,6 +1613,7 @@ struct aac_dev
 	int			maximum_num_channels;
 	struct fsa_dev_info	*fsa_dev;
 	struct task_struct	*thread;
+	struct delayed_work	safw_rescan_work;
 	int			cardtype;
 	/*
 	 *This lock will protect the two 32-bit
@@ -2639,12 +2642,35 @@ static inline int aac_adapter_check_health(struct aac_dev *dev)
 	return (dev)->a_ops.adapter_check_health(dev);
 }
 
+
+int aac_scan_host(struct aac_dev *dev, int rescan);
+
+static inline void aac_schedule_safw_scan_worker(struct aac_dev *dev)
+{
+	schedule_delayed_work(&dev->safw_rescan_work, AAC_SAFW_RESCAN_DELAY);
+}
+
+static inline void aac_safw_rescan_worker(struct work_struct *work)
+{
+	struct aac_dev *dev = container_of(to_delayed_work(work),
+		struct aac_dev, safw_rescan_work);
+
+	aac_scan_host(dev, AAC_RESCAN);
+}
+
+static inline void aac_cancel_safw_rescan_worker(struct aac_dev *dev)
+{
+	if (dev->sa_firmware)
+		cancel_delayed_work_sync(&dev->safw_rescan_work);
+}
+
 /* SCp.phase values */
 #define AAC_OWNER_MIDLEVEL	0x101
 #define AAC_OWNER_LOWLEVEL	0x102
 #define AAC_OWNER_ERROR_HANDLER	0x103
 #define AAC_OWNER_FIRMWARE	0x106
 
+void aac_safw_rescan_worker(struct work_struct *work);
 int aac_acquire_irq(struct aac_dev *dev);
 void aac_free_irq(struct aac_dev *dev);
 int aac_setup_safw_adapter(struct aac_dev *dev, int rescan);
@@ -2719,7 +2745,6 @@ static inline int aac_supports_2T(struct aac_dev *dev)
 	return (dev->adapter_info.options & AAC_OPT_NEW_COMM_64);
 }
 
-int aac_scan_host(struct aac_dev *dev, int rescan);
 char * get_container_type(unsigned type);
 extern int numacb;
 extern char aac_driver_version[];
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index 4e2687ce2456..d562053f14d7 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -1964,16 +1964,28 @@ out:
 	return rcode;
 }
 
+static int aac_scan_safw_host(struct aac_dev *dev, int rescan)
+{
+	int rcode = 0;
+
+	rcode = aac_update_safw_host_devices(dev, rescan);
+	if (rcode)
+		aac_schedule_safw_scan_worker(dev);
+
+	return rcode;
+}
+
 int aac_scan_host(struct aac_dev *dev, int rescan)
 {
 	int rcode = 0;
 
 	mutex_lock(&dev->scan_mutex);
 	if (dev->sa_firmware)
-		rcode = aac_update_safw_host_devices(dev, rescan);
+		rcode = aac_scan_safw_host(dev, rescan);
 	else
 		scsi_scan_host(dev->scsi_host_ptr);
 	mutex_unlock(&dev->scan_mutex);
+
 	return rcode;
 }
 
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 7ea7b2cc86bb..bf9d2b72da62 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -1684,6 +1684,8 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	mutex_init(&aac->ioctl_mutex);
 	mutex_init(&aac->scan_mutex);
+
+	INIT_DELAYED_WORK(&aac->safw_rescan_work, aac_safw_rescan_worker);
 	/*
 	 *	Map in the registers from the adapter.
 	 */
@@ -1873,6 +1875,7 @@ static int aac_suspend(struct pci_dev *pdev, pm_message_t state)
 	struct aac_dev *aac = (struct aac_dev *)shost->hostdata;
 
 	scsi_block_requests(shost);
+	aac_cancel_safw_rescan_worker(aac);
 	aac_send_shutdown(aac);
 
 	aac_release_resources(aac);
@@ -1931,6 +1934,7 @@ static void aac_remove_one(struct pci_dev *pdev)
 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
 	struct aac_dev *aac = (struct aac_dev *)shost->hostdata;
 
+	aac_cancel_safw_rescan_worker(aac);
 	scsi_remove_host(shost);
 
 	__aac_shutdown(aac);
@@ -1988,6 +1992,7 @@ static pci_ers_result_t aac_pci_error_detected(struct pci_dev *pdev,
 		aac->handle_pci_error = 1;
 
 		scsi_block_requests(aac->scsi_host_ptr);
+		aac_cancel_safw_rescan_worker(aac);
 		aac_flush_ios(aac);
 		aac_release_resources(aac);