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authorYi Liu <yi.l.liu@intel.com>2023-08-18 13:10:29 +0300
committerJason Gunthorpe <jgg@nvidia.com>2023-08-18 18:52:15 +0300
commit92766e1b953d6e419684b39f55dab574287dd144 (patch)
tree82d06dda3174ea44313462aa56a0f3f998e3c23d /drivers/iommu
parent65aaca1134025d437882535c9eb54903b9cd09c9 (diff)
downloadlinux-92766e1b953d6e419684b39f55dab574287dd144.tar.xz
iommu: Move dev_iommu_ops() to private header
dev_iommu_ops() is essentially only used in iommu subsystem, so move to a private header to avoid being abused by other drivers. Link: https://lore.kernel.org/r/20230818101033.4100-2-yi.l.liu@intel.com Suggested-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/iommu-priv.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/iommu/iommu-priv.h b/drivers/iommu/iommu-priv.h
index e3e3b2015854..2024a2313348 100644
--- a/drivers/iommu/iommu-priv.h
+++ b/drivers/iommu/iommu-priv.h
@@ -6,6 +6,17 @@
#include <linux/iommu.h>
+static inline const struct iommu_ops *dev_iommu_ops(struct device *dev)
+{
+ /*
+ * Assume that valid ops must be installed if iommu_probe_device()
+ * has succeeded. The device ops are essentially for internal use
+ * within the IOMMU subsystem itself, so we should be able to trust
+ * ourselves not to misuse the helper.
+ */
+ return dev->iommu->iommu_dev->ops;
+}
+
int iommu_group_replace_domain(struct iommu_group *group,
struct iommu_domain *new_domain);