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iommufd: Assert devices_lock for iommufd_hw_pagetable_has_group()

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The hwpt->devices list is locked by this, make it clearer.

Link: https://lore.kernel.org/r/1-v3-ae9c2975a131+2e1e8-iommufd_hwpt_jgg@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Jason Gunthorpe 2023-03-01 15:30:18 -04:00
parent fe15c26ee2
commit 085fcc7eb7
1 changed files with 2 additions and 0 deletions
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2
drivers/iommu/iommufd/device.c
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@ -186,6 +186,8 @@ static bool iommufd_hw_pagetable_has_group(struct iommufd_hw_pagetable *hwpt,
{
struct iommufd_device *cur_dev;
lockdep_assert_held(&hwpt->devices_lock);
list_for_each_entry(cur_dev, &hwpt->devices, devices_item)
if (cur_dev->group == group)
return true;