[RESEND PATCH v3 9/9] edac: Don't load Arm specific edac drivers when ghes_edac is preferred

[Jia He]

edac_mc_add_mc* is too late in the init path and that check should happen
as the very first thing in the driver init function.

Signed-off-by: Jia He <justin.he@xxxxxxx>
---
 drivers/edac/armada_xp_edac.c  | 3 +++
 drivers/edac/layerscape_edac.c | 3 +++
 drivers/edac/thunderx_edac.c   | 3 +++
 drivers/edac/xgene_edac.c      | 3 +++
 4 files changed, 12 insertions(+)

diff --git a/drivers/edac/armada_xp_edac.c b/drivers/edac/armada_xp_edac.c
index 038abbb83f4b..486532b92ce0 100644
--- a/drivers/edac/armada_xp_edac.c
+++ b/drivers/edac/armada_xp_edac.c
@@ -599,6 +599,9 @@ static int __init armada_xp_edac_init(void)
 {
 	int res;
 
+	if (ghes_edac_preferred())
+		return -EBUSY;
+
 	/* only polling is supported */
 	edac_op_state = EDAC_OPSTATE_POLL;
 
diff --git a/drivers/edac/layerscape_edac.c b/drivers/edac/layerscape_edac.c
index 94cac7686a56..60ff4c6674cd 100644
--- a/drivers/edac/layerscape_edac.c
+++ b/drivers/edac/layerscape_edac.c
@@ -38,6 +38,9 @@ static int __init fsl_ddr_mc_init(void)
 {
 	int res;
 
+	if (ghes_edac_preferred())
+		return -EBUSY;
+
 	/* make sure error reporting method is sane */
 	switch (edac_op_state) {
 	case EDAC_OPSTATE_POLL:
diff --git a/drivers/edac/thunderx_edac.c b/drivers/edac/thunderx_edac.c
index f13674081cb6..2c4baa6817a9 100644
--- a/drivers/edac/thunderx_edac.c
+++ b/drivers/edac/thunderx_edac.c
@@ -2114,6 +2114,9 @@ static int __init thunderx_edac_init(void)
 {
 	int rc = 0;
 
+	if (ghes_edac_preferred())
+		return -EBUSY;
+
 	rc = pci_register_driver(&thunderx_lmc_driver);
 	if (rc)
 		return rc;
diff --git a/drivers/edac/xgene_edac.c b/drivers/edac/xgene_edac.c
index 54081403db4f..9aa68220b625 100644
--- a/drivers/edac/xgene_edac.c
+++ b/drivers/edac/xgene_edac.c
@@ -2004,6 +2004,9 @@ static int __init xgene_edac_init(void)
 {
 	int rc;
 
+	if (ghes_edac_preferred())
+		return -EBUSY;
+
 	/* Make sure error reporting method is sane */
 	switch (edac_op_state) {
 	case EDAC_OPSTATE_POLL:
-- 
2.25.1