Commit 9698b6da3714 for kernel

commit 9698b6da3714fd2ef47846cb63098d2b2d252e25
Author: Maxime Chevallier <maxime.chevallier@bootlin.com>
Date:   Wed Aug 26 16:04:54 2026 +0200

    net: stmmac: dwmac1000: Account for the primary MAC address for UC filtering

    The same filter slots are used to store the main MAC address as well as
    the address for the unicast filter. Let's account for that when deciding
    whether or not to use promisc when programming the UC list in hardware.

    Fixes: 47dd7a540b8a ("net: add support for STMicroelectronics Ethernet controllers.")
    Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
    Reviewed-by: Andrew Lunn <andrew@lunn.ch>
    Link: https://patch.msgid.link/20260826140500.616466-3-maxime.chevallier@bootlin.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index caac85fc08f1..d4ace3924891 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -194,7 +194,7 @@ static void dwmac1000_set_filter(struct mac_device_info *hw,
 	dwmac1000_set_mchash(ioaddr, mc_filter, mcbitslog2);

 	/* Handle multiple unicast addresses (perfect filtering) */
-	if (netdev_uc_count(dev) > perfect_addr_number)
+	if (netdev_uc_count(dev) + 1 > perfect_addr_number)
 		/* Switch to promiscuous mode if more than unicast
 		 * addresses are requested than supported by hardware.
 		 */