net: thunderx: Fix for crash while BGX teardown

Cortina phy does not have kernel driver and we don't attach
device with phy layer for intefaces like XFI, XLAUI etc,
Hence check for interface type before calling disconnect.

Signed-off-by: Thanneeru Srinivasulu <tsrinivasulu@caviumnetworks.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
index 633ec05dfe0578b71825bf409df24371f58a776c..b961a89dc6264555553ee94484478b5dca9822dc 100644 (file)
--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
@@ -673,7 +673,10 @@ static void bgx_lmac_disable(struct bgx *bgx, u8 lmacid)
        bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cmrx_cfg);
        bgx_flush_dmac_addrs(bgx, lmacid);
 
-       if (lmac->phydev)
+       if ((bgx->lmac_type != BGX_MODE_XFI) &&
+           (bgx->lmac_type != BGX_MODE_XLAUI) &&
+           (bgx->lmac_type != BGX_MODE_40G_KR) &&
+           (bgx->lmac_type != BGX_MODE_10G_KR) && lmac->phydev)
                phy_disconnect(lmac->phydev);
 
        lmac->phydev = NULL;