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drm/ttm: remove cpu_address member from ttm_tt

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Patch 3d50d4dcb0 exposed the CPU address of DMA-allocated pages as
returned by dma_alloc_coherent because Nouveau on Tegra needed it.

This is not required anymore - as there were no other users for it,
remove it and save some memory for everyone.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alexandre Courbot
2016-09-16 18:32:26 +09:00
committed by Alex Deucher
parent 0aa3e2d0cb
commit af1f85ddec
3 changed files with 2 additions and 9 deletions
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7
drivers/gpu/drm/ttm/ttm_tt.c
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@@ -57,10 +57,8 @@ static void ttm_dma_tt_alloc_page_directory(struct ttm_dma_tt *ttm)
{
ttm->ttm.pages = drm_calloc_large(ttm->ttm.num_pages,
sizeof(*ttm->ttm.pages) +
sizeof(*ttm->dma_address) +
sizeof(*ttm->cpu_address));
ttm->cpu_address = (void *) (ttm->ttm.pages + ttm->ttm.num_pages);
ttm->dma_address = (void *) (ttm->cpu_address + ttm->ttm.num_pages);
sizeof(*ttm->dma_address));
ttm->dma_address = (void *) (ttm->ttm.pages + ttm->ttm.num_pages);
}
#ifdef CONFIG_X86
@@ -244,7 +242,6 @@ void ttm_dma_tt_fini(struct ttm_dma_tt *ttm_dma)
drm_free_large(ttm->pages);
ttm->pages = NULL;
ttm_dma->cpu_address = NULL;
ttm_dma->dma_address = NULL;
}
EXPORT_SYMBOL(ttm_dma_tt_fini);