From: Jason Gunthorpe <jgg@nvidia.com>
Date: Mon, 5 Jun 2023 21:59:40 -0300
Subject: iommu: Use iommu_group_ref_get/put() for dev->iommu_group
Git-commit: 5665d15d3cb796d363a2dc0d2ed17855a3cb5942
Patch-mainline: v6.6-rc1
References: jsc#PED-7779 jsc#PED-7780
No reason to open code this, use the proper helper functions.
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/2-v3-328044aa278c+45e49-iommu_probe_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/iommu.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index bdc5ce884b7b..2f16f988ab36 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -500,7 +500,7 @@ static void __iommu_group_release_device(struct iommu_group *group,
kfree(grp_dev->name);
kfree(grp_dev);
dev->iommu_group = NULL;
- kobject_put(group->devices_kobj);
+ iommu_group_put(group);
}
static void iommu_release_device(struct device *dev)
@@ -1067,8 +1067,7 @@ int iommu_group_add_device(struct iommu_group *group, struct device *dev)
goto err_free_name;
}
- kobject_get(group->devices_kobj);
-
+ iommu_group_ref_get(group);
dev->iommu_group = group;
mutex_lock(&group->mutex);