[PATCH Review 2/2] drm/amdgpu: Add checking mc_vram_size

[Stanley . Yang]

Do not compare injection address with mc_vram_size
if mc_vram_size is zero.

Signed-off-by: Stanley.Yang <stanley.y...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index 56bb0db207b9..3c041efcf0c4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -494,7 +494,8 @@ static ssize_t amdgpu_ras_debugfs_ctrl_write(struct file *f,
                ret = amdgpu_ras_feature_enable(adev, &data.head, 1);
                break;
        case 2:
-               if ((data.inject.address >= adev->gmc.mc_vram_size) ||
+               if ((data.inject.address >= adev->gmc.mc_vram_size &&
+                   adev->gmc.mc_vram_size) ||
                    (data.inject.address >= RAS_UMC_INJECT_ADDR_LIMIT)) {
                        dev_warn(adev->dev, "RAS WARN: input address "
                                        "0x%llx is invalid.",
-- 
2.17.1