net: stmmac: allow a tc-taprio base-time of zero

[ Upstream commit f64ab8e4f368f48afb08ae91928e103d17b235e9 ]

Commit fe28c53ed71d ("net: stmmac: fix taprio configuration when
base_time is in the past") allowed some base time values in the past,
but apparently not all, the base-time value of 0 (Jan 1st 1970) is still
explicitly denied by the driver.

Remove the bogus check.

Fixes: b60189e0392f ("net: stmmac: Integrate EST with TAPRIO scheduler API")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
index 639980306115889ecc8cff0ec8d72a0e346360b8..43165c662740dc668a74b903ecd17166f2d86ea3 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
@@ -679,8 +679,6 @@ static int tc_setup_taprio(struct stmmac_priv *priv,
                goto disable;
        if (qopt->num_entries >= dep)
                return -EINVAL;
-       if (!qopt->base_time)
-               return -ERANGE;
        if (!qopt->cycle_time)
                return -ERANGE;