[PATCH 1/2] drm/amd/ras: tolerate an unsupported MCA debug mode control

ras_mp1_set_debug_mode() reports -EOPNOTSUPP where the control does not
exist, an SR-IOV guest among them. Treating that as fatal fails
ras_core_sw_init() and takes RAS down on every VF.

Nothing else in the MP1 block depends on it, so carry on.

Signed-off-by: Xiang Liu <[email protected]>
---
 drivers/gpu/drm/amd/ras/core/ras_mp1.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/ras/core/ras_mp1.c b/drivers/gpu/drm/amd/ras/core/ras_mp1.c
index 2452448806f6..781faf6a7529 100644
--- a/drivers/gpu/drm/amd/ras/core/ras_mp1.c
+++ b/drivers/gpu/drm/amd/ras/core/ras_mp1.c
@@ -203,12 +203,12 @@ int ras_mp1_sw_init(struct ras_core_context *ras_core)
 	mutex_init(&mp1->op_mutex);
 
 	ret = ras_mp1_set_debug_mode(ras_core, false);
-	if (ret) {
+	if (ret && ret != -EOPNOTSUPP) {
 		mutex_destroy(&mp1->op_mutex);
 		return ret;
 	}
 
-	return ret;
+	return 0;
 }
 
 int ras_mp1_sw_fini(struct ras_core_context *ras_core)
-- 
2.34.1