[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.Yang at 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