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

phy_list_lock is not held when using asd_sas_port->phy_list in the mvsas
driver. Add spin_lock/unlock in those places.

Link: https://lore.kernel.org/r/1639999298-244569-7-git-send-email-chenxiang66@hisilicon.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 19:21:29 +08:00 committed by Martin K. Petersen
parent 29e2bac874
commit 133b688b2d
1 changed files with 5 additions and 0 deletions
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5
drivers/scsi/mvsas/mv_sas.c
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@ -67,8 +67,10 @@ static struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev)
while (sha->sas_port[i]) {
if (sha->sas_port[i] == dev->port) {
spin_lock(&sha->sas_port[i]->phy_list_lock);
phy = container_of(sha->sas_port[i]->phy_list.next,
struct asd_sas_phy, port_phy_el);
spin_unlock(&sha->sas_port[i]->phy_list_lock);
j = 0;
while (sha->sas_phy[j]) {
if (sha->sas_phy[j] == phy)
@ -96,6 +98,8 @@ static int mvs_find_dev_phyno(struct domain_device *dev, int *phyno)
while (sha->sas_port[i]) {
if (sha->sas_port[i] == dev->port) {
struct asd_sas_phy *phy;
spin_lock(&sha->sas_port[i]->phy_list_lock);
list_for_each_entry(phy,
&sha->sas_port[i]->phy_list, port_phy_el) {
j = 0;
@ -109,6 +113,7 @@ static int mvs_find_dev_phyno(struct domain_device *dev, int *phyno)
num++;
n++;
}
spin_unlock(&sha->sas_port[i]->phy_list_lock);
break;
}
i++;