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Commit 3395614e authored by Raghava Aditya Renukunta's avatar Raghava Aditya Renukunta Committed by Martin K. Petersen
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scsi: aacraid: Block concurrent hotplug event handling 



Currently driver will attempt to process hotplug events concurrently based
on the FW interrupt.

Protect safw update function with a scan mutex.

Signed-off-by: default avatarRaghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 6f44a22b

drivers/scsi/aacraid/aacraid.h

+1 −0
Original line number Diff line number Diff line
@@ -1565,6 +1565,7 @@ struct aac_dev 
	spinlock_t		fib_lock;



	struct mutex		ioctl_mutex;

	struct mutex		scan_mutex;

	struct aac_queue_block *queues;

	/*

	 *	The user API will use an IOCTL to register itself to receive

drivers/scsi/aacraid/commsup.c

+2 −0
Original line number Diff line number Diff line
@@ -1997,7 +1997,9 @@ static void aac_handle_sa_aif(struct aac_dev *dev, struct fib *fibptr) 
	case SA_AIF_LDEV_CHANGE:

	case SA_AIF_BPCFG_CHANGE:



		mutex_lock(&dev->scan_mutex);

		aac_update_safw_host_devices(dev, AAC_RESCAN);

		mutex_unlock(&dev->scan_mutex);

		break;



	case SA_AIF_BPSTAT_CHANGE:

drivers/scsi/aacraid/linit.c

+1 −0
Original line number Diff line number Diff line
@@ -1683,6 +1683,7 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 
	spin_lock_init(&aac->fib_lock);



	mutex_init(&aac->ioctl_mutex);

	mutex_init(&aac->scan_mutex);

	/*

	 *	Map in the registers from the adapter.

	 */