diff options
| -rw-r--r-- | drivers/iommu/iommu.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index b326389deea4..cc06dcadff8f 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -501,6 +501,7 @@ static ssize_t iommu_group_show_type(struct iommu_group *group, { char *type = "unknown\n"; + mutex_lock(&group->mutex); if (group->default_domain) { switch (group->default_domain->type) { case IOMMU_DOMAIN_BLOCKED: @@ -517,6 +518,7 @@ static ssize_t iommu_group_show_type(struct iommu_group *group, break; } } + mutex_unlock(&group->mutex); strcpy(buf, type); return strlen(type); |