[PATCH 2/2] drm/amdgpu: fix 64bit shift for CZ

[Christian König]

From: Christian König <christian.koenig at amd.com>

Fixes "access stolen VRAM directly on CZ", otherwise that won't
work as expected with more than 4GB RAM.

Signed-off-by: Christian König <christian.koenig at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index a564e89..7669b32 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -470,7 +470,7 @@ static int gmc_v8_0_mc_init(struct amdgpu_device *adev)
 
 #ifdef CONFIG_X86_64
 	if (adev->flags & AMD_IS_APU) {
-		adev->mc.aper_base = RREG32(mmMC_VM_FB_OFFSET) << 22ULL;
+		adev->mc.aper_base = ((u64)RREG32(mmMC_VM_FB_OFFSET)) << 22;
 		adev->mc.aper_size = adev->mc.real_vram_size;
 	}
 #endif
-- 
2.5.0