From: Jason Gunthorpe <jgg@nvidia.com>
Date: Tue, 6 Jun 2023 00:59:40 +0000 (-0300)
Subject: iommu: Use iommu_group_ref_get/put() for dev->iommu_group
X-Git-Tag: v6.6-rc1~88^2^10~11
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5665d15d3cb796d363a2dc0d2ed17855a3cb5942;p=thirdparty%2Fkernel%2Flinux.git

iommu: Use iommu_group_ref_get/put() for dev->iommu_group

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>
---

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index bdc5ce884b7bf..2f16f988ab363 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 @@ rename:
 		goto err_free_name;
 	}
 
-	kobject_get(group->devices_kobj);
-
+	iommu_group_ref_get(group);
 	dev->iommu_group = group;
 
 	mutex_lock(&group->mutex);