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iommu: Replace iommu_group_device_count() with list_count_nodes()

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No reason to wrapper a standard function, just call the library directly.

Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/1-v5-1b99ae392328+44574-iommu_err_unwind_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Jason Gunthorpe
2023-05-11 01:41:59 -03:00
committed by Joerg Roedel
parent 32261d1094
commit 4db0e5f887
1 changed files with 2 additions and 13 deletions
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15
drivers/iommu/iommu.c
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@@ -1125,17 +1125,6 @@ void iommu_group_remove_device(struct device *dev)
}
EXPORT_SYMBOL_GPL(iommu_group_remove_device);
static int iommu_group_device_count(struct iommu_group *group)
{
struct group_device *entry;
int ret = 0;
list_for_each_entry(entry, &group->devices, list)
ret++;
return ret;
}
static int __iommu_group_for_each_dev(struct iommu_group *group, void *data,
int (*fn)(struct device *, void *))
{
@@ -2083,7 +2072,7 @@ int iommu_attach_device(struct iommu_domain *domain, struct device *dev)
*/
mutex_lock(&group->mutex);
ret = -EINVAL;
if (iommu_group_device_count(group) != 1)
if (list_count_nodes(&group->devices) != 1)
goto out_unlock;
ret = __iommu_attach_group(domain, group);
@@ -2114,7 +2103,7 @@ void iommu_detach_device(struct iommu_domain *domain, struct device *dev)
mutex_lock(&group->mutex);
if (WARN_ON(domain != group->domain) ||
WARN_ON(iommu_group_device_count(group) != 1))
WARN_ON(list_count_nodes(&group->devices) != 1))
goto out_unlock;
__iommu_group_set_core_domain(group);