drm/amdgpu: remove invalid resource->start check v2

commit ca7c4507ba87e9fc22e0ecfa819c3664b3e8287b upstream.

The majority of those where removed in the commit aed01a68047b
("drm/amdgpu: Remove TTM resource->start visible VRAM condition v2")

But this one was missed because it's working on the resource and not the
BO. Since we also no longer use a fake start address for visible BOs
this will now trigger invalid mapping errors.

v2: also remove the unused variable

Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: aed01a68047b ("drm/amdgpu: Remove TTM resource->start visible VRAM condition v2")
CC: stable@vger.kernel.org
Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 928107d0bfea4e4203c8275b075064eb85e1e5b2..1124e2d4f85301bace55cc2a110bdc2792afa53f 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -562,7 +562,6 @@ static int amdgpu_ttm_io_mem_reserve(struct ttm_device *bdev,
                                     struct ttm_resource *mem)
 {
        struct amdgpu_device *adev = amdgpu_ttm_adev(bdev);
-       size_t bus_size = (size_t)mem->size;
 
        switch (mem->mem_type) {
        case TTM_PL_SYSTEM:
@@ -573,9 +572,6 @@ static int amdgpu_ttm_io_mem_reserve(struct ttm_device *bdev,
                break;
        case TTM_PL_VRAM:
                mem->bus.offset = mem->start << PAGE_SHIFT;
-               /* check if it's visible */
-               if ((mem->bus.offset + bus_size) > adev->gmc.visible_vram_size)
-                       return -EINVAL;
 
                if (adev->mman.aper_base_kaddr &&
                    mem->placement & TTM_PL_FLAG_CONTIGUOUS)