Make the struct ttm_device_funcs pointers const so the data can be placed in 
rodata.

Cc: Christian Koenig <christian.koe...@amd.com>
Cc: Huang Rui <ray.hu...@amd.com>
Signed-off-by: Jani Nikula <jani.nik...@intel.com>
---
 drivers/gpu/drm/ttm/ttm_device.c | 2 +-
 include/drm/ttm/ttm_device.h     | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_device.c b/drivers/gpu/drm/ttm/ttm_device.c
index ae2f19dc9f81..a71bb1362de4 100644
--- a/drivers/gpu/drm/ttm/ttm_device.c
+++ b/drivers/gpu/drm/ttm/ttm_device.c
@@ -190,7 +190,7 @@ EXPORT_SYMBOL(ttm_device_swapout);
  * Returns:
  * !0: Failure.
  */
-int ttm_device_init(struct ttm_device *bdev, struct ttm_device_funcs *funcs,
+int ttm_device_init(struct ttm_device *bdev, const struct ttm_device_funcs 
*funcs,
                    struct device *dev, struct address_space *mapping,
                    struct drm_vma_offset_manager *vma_manager,
                    bool use_dma_alloc, bool use_dma32)
diff --git a/include/drm/ttm/ttm_device.h b/include/drm/ttm/ttm_device.h
index 56e82ba2d046..c22f30535c84 100644
--- a/include/drm/ttm/ttm_device.h
+++ b/include/drm/ttm/ttm_device.h
@@ -223,7 +223,7 @@ struct ttm_device {
         * @funcs: Function table for the device.
         * Constant after bo device init
         */
-       struct ttm_device_funcs *funcs;
+       const struct ttm_device_funcs *funcs;
 
        /**
         * @sysman: Resource manager for the system domain.
@@ -287,7 +287,7 @@ static inline void ttm_set_driver_manager(struct ttm_device 
*bdev, int type,
        bdev->man_drv[type] = manager;
 }
 
-int ttm_device_init(struct ttm_device *bdev, struct ttm_device_funcs *funcs,
+int ttm_device_init(struct ttm_device *bdev, const struct ttm_device_funcs 
*funcs,
                    struct device *dev, struct address_space *mapping,
                    struct drm_vma_offset_manager *vma_manager,
                    bool use_dma_alloc, bool use_dma32);
-- 
2.39.1

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