scsi: libsas: Grab the ATA port lock in sas_ata_device_link_abort()

commit a67aad5 upstream.

Grab the ATA port lock in sas_ata_device_link_abort() before calling
ata_link_abort() as outlined in this function's locking requirements.

Fixes: 4411292 ("scsi: libsas: Add sas_ata_device_link_abort()")
Signed-off-by: Xingui Yang <[email protected]>
Reviewed-by: John Garry <[email protected]>
Reviewed-by: Jason Yan <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Xingui Yang

drivers/scsi/libsas/sas_ata.c

@@ -890,14 +890,17 @@ void sas_ata_device_link_abort(struct domain_device *device, bool force_reset)
 {
 	struct ata_port *ap = device->sata_dev.ap;
 	struct ata_link *link = &ap->link;
+	unsigned long flags;
 
+	spin_lock_irqsave(ap->lock, flags);
 	device->sata_dev.fis[2] = ATA_ERR | ATA_DRDY; /* tf status */
 	device->sata_dev.fis[3] = ATA_ABORTED; /* tf error */
 
 	link->eh_info.err_mask |= AC_ERR_DEV;
 	if (force_reset)
 		link->eh_info.action |= ATA_EH_RESET;
 	ata_link_abort(link);
+	spin_unlock_irqrestore(ap->lock, flags);
 }
 EXPORT_SYMBOL_GPL(sas_ata_device_link_abort);