From: Yi Liu <yi.l.liu@intel.com>
dev_iommu_ops() is essentially only used in iommu subsystem, so
move to a private header to avoid being abused by other drivers.
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
---
drivers/iommu/iommu-priv.h | 18 ++++++++++++++++++
drivers/iommu/iommu.c | 2 ++
include/linux/iommu.h | 11 -----------
3 files changed, 20 insertions(+), 11 deletions(-)
create mode 100644 drivers/iommu/iommu-priv.h
diff --git a/drivers/iommu/iommu-priv.h b/drivers/iommu/iommu-priv.h
new file mode 100644
index 000000000000..9e1497027cff
--- /dev/null
+++ b/drivers/iommu/iommu-priv.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __LINUX_IOMMU_PRIV_H
+#define __LINUX_IOMMU_PRIV_H
+
+#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;
+}
+#endif /* __LINUX_IOMMU_PRIV_H */
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 4b5a21ac5e88..a18b7f1a4e6e 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -35,6 +35,8 @@
#include "iommu-sva.h"
+#include "iommu-priv.h"
+
static struct kset *iommu_group_kset;
static DEFINE_IDA(iommu_group_ida);
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index a8063f26ff69..cb586d054c57 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -445,17 +445,6 @@ static inline void iommu_iotlb_gather_init(struct iommu_iotlb_gather *gather)
};
}
-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;
-}
-
extern int bus_iommu_probe(struct bus_type *bus);
extern bool iommu_present(struct bus_type *bus);
extern bool device_iommu_capable(struct device *dev, enum iommu_cap cap);
--
2.39.1