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drm/amdgpu: fix overflow on 32bit systems 

mem->start is a long, so this can overflow on 32bit systems.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Christian König 2015-09-07 12:32:09 +02:00 committed by Alex Deucher
parent 1886d1a9ca
commit b7d698d7fd
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@ -855,7 +855,7 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev,
int r; int r;
if (mem) { if (mem) {
addr = mem->start << PAGE_SHIFT; addr = (u64)mem->start << PAGE_SHIFT;
if (mem->mem_type != TTM_PL_TT) if (mem->mem_type != TTM_PL_TT)
addr += adev->vm_manager.vram_base_offset; addr += adev->vm_manager.vram_base_offset;
} else { } else {