net: stmmac: selftests: Check if filtering is available before running

We need to check if the number of available Hash Filters is enough to
run the test, otherwise we will get false failures.

Fixes: 091810dbded9 ("net: stmmac: Introduce selftests support")
Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
index cc76a42c7466c27cc7d025bc94a03014d6bcfda3..ed3926d4471dc361ec28b8b6bc8425a8b1775907 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
@@ -496,6 +496,9 @@ static int stmmac_test_hfilt(struct stmmac_priv *priv)
        if (ret)
                return ret;
 
+       if (netdev_mc_count(priv->dev) >= priv->hw->multicast_filter_bins)
+               return -EOPNOTSUPP;
+
        ret = dev_mc_add(priv->dev, gd_addr);
        if (ret)
                return ret;
@@ -573,6 +576,8 @@ static int stmmac_test_mcfilt(struct stmmac_priv *priv)
 
        if (stmmac_filter_check(priv))
                return -EOPNOTSUPP;
+       if (!priv->hw->multicast_filter_bins)
+               return -EOPNOTSUPP;
 
        /* Remove all MC addresses */
        __dev_mc_unsync(priv->dev, NULL);
@@ -611,6 +616,8 @@ static int stmmac_test_ucfilt(struct stmmac_priv *priv)
 
        if (stmmac_filter_check(priv))
                return -EOPNOTSUPP;
+       if (!priv->hw->multicast_filter_bins)
+               return -EOPNOTSUPP;
 
        /* Remove all UC addresses */
        __dev_uc_unsync(priv->dev, NULL);