[PATCH v2 38/45] common/sfc_efx/base: ignore legacy link events on new boards

[Ivan Malov]

New adaptors (for instance, Medford4) come with netport MCDI
and also support new link change events, however, older ones
can also be generated. For consistency, ignore legacy events.

Signed-off-by: Ivan Malov <ivan.malov at arknetworks.am>
Reviewed-by: Andy Moreton <andy.moreton at amd.com>
Reviewed-by: Pieter Jansen Van Vuuren <pieter.jansen-van-vuuren at amd.com>
---
 drivers/common/sfc_efx/base/ef10_ev.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/common/sfc_efx/base/ef10_ev.c b/drivers/common/sfc_efx/base/ef10_ev.c
index 011ef49de7..82a2284f2b 100644
--- a/drivers/common/sfc_efx/base/ef10_ev.c
+++ b/drivers/common/sfc_efx/base/ef10_ev.c
@@ -907,6 +907,16 @@ ef10_ev_mcdi(
 #endif /* EFSYS_OPT_MCDI_PROXY_AUTH_SERVER */
 
 	case MCDI_EVENT_CODE_LINKCHANGE_V2:
+		if (efx_np_supported(enp) != B_FALSE) {
+			/*
+			 * Netport MCDI capable NICs support new link change
+			 * events, but legacy LINKCHANGE_V2 events may still
+			 * show up should the firmware support them. For the
+			 * sake of consistency, ignore LINKCHANGE_V2 events.
+			 */
+			break;
+		}
+
 		ev_is_v2 = B_TRUE;
 		/* Fallthrough */
 	case MCDI_EVENT_CODE_LINKCHANGE: {
-- 
2.39.5