Commit 085fcc7e authored by Jason Gunthorpe's avatar Jason Gunthorpe
Browse files

iommufd: Assert devices_lock for iommufd_hw_pagetable_has_group() 

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: default avatarKevin Tian <kevin.tian@intel.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent fe15c26e

drivers/iommu/iommufd/device.c

+2 −0
Original line number Diff line number Diff line
@@ -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;