net: stmmac: add warning when TSO is requested but unsupported

Add a warning message if TSO is requested by the platform glue code but
the core wasn't configured for TSO.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1w7pty-0000000Eatt-2TjZ@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index c9cb81ae812e32028ae030d64d6bf10614725a19..3c416fe79c159623c9510ad947a49f1a30617b44 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -4392,8 +4392,10 @@ static void stmmac_set_gso_features(struct net_device *ndev)
        if (!(priv->plat->flags & STMMAC_FLAG_TSO_EN))
                return;
 
-       if (!priv->dma_cap.tsoen)
+       if (!priv->dma_cap.tsoen) {
+               dev_warn(priv->device, "platform requests unsupported TSO\n");
                return;
+       }
 
        ndev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
        if (priv->plat->core_type == DWMAC_CORE_GMAC4)