linux-stable/include/linux/of_iommu.h
Jason Gunthorpe 6ff6e184f1 iommmu/of: Do not return struct iommu_ops from of_iommu_configure()
Nothing needs this pointer. Return a normal error code with the usual
IOMMU semantic that ENODEV means 'there is no IOMMU driver'.

Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Acked-by: Rob Herring <robh@kernel.org>
Tested-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/2-v2-16e4def25ebb+820-iommu_fwspec_p1_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2023-12-12 10:18:47 +01:00

33 lines
671 B
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __OF_IOMMU_H
#define __OF_IOMMU_H
struct device;
struct device_node;
struct iommu_ops;
#ifdef CONFIG_OF_IOMMU
extern int of_iommu_configure(struct device *dev, struct device_node *master_np,
const u32 *id);
extern void of_iommu_get_resv_regions(struct device *dev,
struct list_head *list);
#else
static inline int of_iommu_configure(struct device *dev,
struct device_node *master_np,
const u32 *id)
{
return -ENODEV;
}
static inline void of_iommu_get_resv_regions(struct device *dev,
struct list_head *list)
{
}
#endif /* CONFIG_OF_IOMMU */
#endif /* __OF_IOMMU_H */