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net: stmmac: gmac4+: Not all Unicast addresses may be available 

Some setups may not have all Unicast addresses filters available. Check
the number of available filters before trying to setup it.

Fixes: 477286b53f ("stmmac: add GMAC4 core support")
Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jose Abreu 2019-10-06 13:08:56 +02:00 committed by David S. Miller
parent b870b0f867
commit 25683bab09
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
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@ -448,7 +448,7 @@ static void dwmac4_set_filter(struct mac_device_info *hw,
value |= GMAC_PACKET_FILTER_HPF; value |= GMAC_PACKET_FILTER_HPF;
/* Handle multiple unicast addresses */ /* Handle multiple unicast addresses */
if (netdev_uc_count(dev) > GMAC_MAX_PERFECT_ADDRESSES) { if (netdev_uc_count(dev) > hw->unicast_filter_entries) {
/* Switch to promiscuous mode if more than 128 addrs /* Switch to promiscuous mode if more than 128 addrs
* are required * are required
*/ */