drm/amdgpu: disable the IP module if early_init returns -ENOENT (v2)

If we run into a part with a harvest configuration where the entire
IP block is unusable, just disable the IP block.

v2: fix logic as noted by Christian

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

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index ba46be3..d79009b 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1207,10 +1207,15 @@ static int amdgpu_early_init(struct amdgpu_device *adev)
                } else {
                        if (adev->ip_blocks[i].funcs->early_init) {
                                r = adev->ip_blocks[i].funcs->early_init((void *)adev);
-                               if (r)
+                               if (r == -ENOENT)
+                                       adev->ip_block_enabled[i] = false;
+                               else if (r)
                                        return r;
+                               else
+                                       adev->ip_block_enabled[i] = true;
+                       } else {
+                               adev->ip_block_enabled[i] = true;
                        }
-                       adev->ip_block_enabled[i] = true;
                }
        }