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-rw-r--r--drivers/gpu/drm/radeon/radeon_ttm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index 3aa3a65800ab..e9918d88f5b0 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -451,7 +451,7 @@ static int radeon_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_
/* RADEON_IS_AGP is set only if AGP is active */
mem->bus.offset = mem->mm_node->start << PAGE_SHIFT;
mem->bus.base = rdev->mc.agp_base;
- mem->bus.is_iomem = true;
+ mem->bus.is_iomem = !rdev->ddev->agp->cant_use_aperture;
}
#endif
break;