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

commit a67aad57d9aee41180aff36e54cb72fe4b8d5a5a 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: 44112922674b ("scsi: libsas: Add sas_ata_device_link_abort()")
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index a34d06f..6b045be 100644 (file)
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -890,7 +890,9 @@ 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 */
 
@@ -898,6 +900,7 @@ void sas_ata_device_link_abort(struct domain_device *device, bool force_reset)
        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);