drm/amdgpu: don't check the default value for vm size

Avoids printing spurious messages like this:
[    3.102059] amdgpu 0000:01:00.0: VM size (-1) must be a power of 2

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 875cde414be7..b2c960b2ea82 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1073,6 +1073,10 @@ def_value:
 
 static void amdgpu_check_vm_size(struct amdgpu_device *adev)
 {
+        /* no need to check the default value */
+        if (amdgpu_vm_size == -1)
+                return;
+
         if (!amdgpu_check_pot_argument(amdgpu_vm_size)) {
                 dev_warn(adev->dev, "VM size (%d) must be a power of 2\n",
                          amdgpu_vm_size);