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net: stmmac: dwmac4/5: Clear unused address entries

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[ Upstream commit 0620ec6c62 ]

In case we don't use a given address entry we need to clear it because
it could contain previous values that are no longer valid.

Found out while running stmmac selftests.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jose Abreu
2019-05-24 10:20:25 +02:00
committed by Greg Kroah-Hartman
parent e20d2f994f
commit e703ea55e7
1 changed files with 8 additions and 2 deletions
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10
drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
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@@ -443,14 +443,20 @@ static void dwmac4_set_filter(struct mac_device_info *hw,
* are required
*/
value |= GMAC_PACKET_FILTER_PR;
} else if (!netdev_uc_empty(dev)) {
int reg = 1;
} else {
struct netdev_hw_addr *ha;
int reg = 1;
netdev_for_each_uc_addr(ha, dev) {
dwmac4_set_umac_addr(hw, ha->addr, reg);
reg++;
}
while (reg <= GMAC_MAX_PERFECT_ADDRESSES) {
writel(0, ioaddr + GMAC_ADDR_HIGH(reg));
writel(0, ioaddr + GMAC_ADDR_LOW(reg));
reg++;
}
}
writel(value, ioaddr + GMAC_PACKET_FILTER);