[PATCH 6/8] drm/vram-helper: don't use ttm bo->offset v2

[Nirmoy Das]

Calculate GEM VRAM bo's offset within vram-helper without depending on
bo->offset

Signed-off-by: Nirmoy Das <nirmoy....@amd.com>
---
 drivers/gpu/drm/drm_gem_vram_helper.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c 
b/drivers/gpu/drm/drm_gem_vram_helper.c
index 92a11bb42365..3edf5f241c15 100644
--- a/drivers/gpu/drm/drm_gem_vram_helper.c
+++ b/drivers/gpu/drm/drm_gem_vram_helper.c
@@ -198,6 +198,21 @@ u64 drm_gem_vram_mmap_offset(struct drm_gem_vram_object 
*gbo)
 }
 EXPORT_SYMBOL(drm_gem_vram_mmap_offset);

+/**
+ * drm_gem_vram_pg_offset() - Returns a GEM VRAM object's page offset
+ * @gbo:       the GEM VRAM object
+ *
+ * Returns:
+ * The buffer object's page offset, or
+ * 0 with a warning when memory manager node of the buffer object is NULL
+ * */
+static s64 drm_gem_vram_pg_offset(struct drm_gem_vram_object *gbo)
+{
+       if (WARN_ON_ONCE(!gbo->bo.mem.mm_node))
+               return 0;
+       return gbo->bo.mem.start;
+}
+
 /**
  * drm_gem_vram_offset() - \
        Returns a GEM VRAM object's offset in video memory
@@ -214,7 +229,7 @@ s64 drm_gem_vram_offset(struct drm_gem_vram_object *gbo)
 {
        if (WARN_ON_ONCE(!gbo->pin_count))
                return (s64)-ENODEV;
-       return gbo->bo.offset;
+       return drm_gem_vram_pg_offset(gbo) << PAGE_SHIFT;
 }
 EXPORT_SYMBOL(drm_gem_vram_offset);

--
2.25.0

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