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scsi: libsas: Add spin_lock/unlock() to protect asd_sas_port->phy_list

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Most places that use asd_sas_port->phy_list in libsas are protected by
spinlock asd_sas_port->phy_list_lock. However, there are still a few places
which miss the lock. Add it in those places.

Link: https://lore.kernel.org/r/1639999298-244569-5-git-send-email-chenxiang66@hisilicon.com
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Xiang Chen 2021-12-20 19:21:27 +08:00 committed by Martin K. Petersen
parent 6e1fcab00a
commit 42159d3c8d
1 changed files with 5 additions and 1 deletions
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6
drivers/scsi/libsas/sas_event.c
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@ -104,11 +104,15 @@ void sas_enable_revalidation(struct sas_ha_struct *ha)
if (!test_and_clear_bit(ev, &d->pending))
continue;
if (list_empty(&port->phy_list))
spin_lock(&port->phy_list_lock);
if (list_empty(&port->phy_list)) {
spin_unlock(&port->phy_list_lock);
continue;
}
sas_phy = container_of(port->phy_list.next, struct asd_sas_phy,
port_phy_el);
spin_unlock(&port->phy_list_lock);
sas_notify_port_event(sas_phy,
PORTE_BROADCAST_RCVD, GFP_KERNEL);
}