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path: root/drivers/net/sfc/selftest.c
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Diffstat (limited to 'drivers/net/sfc/selftest.c')
-rw-r--r--drivers/net/sfc/selftest.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/sfc/selftest.c b/drivers/net/sfc/selftest.c
index 578b7f410ed..6bb09f263b3 100644
--- a/drivers/net/sfc/selftest.c
+++ b/drivers/net/sfc/selftest.c
@@ -702,8 +702,15 @@ int efx_offline_test(struct efx_nic *efx,
*/
mutex_lock(&efx->mac_lock);
efx->port_inhibited = true;
- if (efx->loopback_modes)
- efx->loopback_mode = __ffs(efx->loopback_modes);
+ if (efx->loopback_modes) {
+ /* We need the 312 clock from the PHY to test the XMAC
+ * registers, so move into XGMII loopback if available */
+ if (efx->loopback_modes & (1 << LOOPBACK_XGMII))
+ efx->loopback_mode = LOOPBACK_XGMII;
+ else
+ efx->loopback_mode = __ffs(efx->loopback_modes);
+ }
+
__efx_reconfigure_port(efx);
mutex_unlock(&efx->mac_lock);