5.10-stable review patch. If anyone has any objections, please let me know.
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From: Jonas Gorski jonas.gorski@gmail.com
[ Upstream commit 2f3dcd0d39affe5b9ba1c351ce0e270c8bdd5109 ]
All modern chips support and need the 10_100 bit set for supporting jumbo frames on 10/100 ports, so instead of enabling it only for 583XX enable it for everything except bcm63xx, where the bit is writeable, but does nothing.
Tested on BCM53115, where jumbo frames were dropped at 10/100 speeds without the bit set.
Fixes: 6ae5834b983a ("net: dsa: b53: add MTU configuration support") Signed-off-by: Jonas Gorski jonas.gorski@gmail.com Reviewed-by: Florian Fainelli florian.fainelli@broadcom.com Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/dsa/b53/b53_common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 459caaf6aa613..2fc33019e814a 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -2188,7 +2188,7 @@ static int b53_change_mtu(struct dsa_switch *ds, int port, int mtu) return 0;
enable_jumbo = (mtu > ETH_DATA_LEN); - allow_10_100 = (dev->chip_id == BCM583XX_DEVICE_ID); + allow_10_100 = !is63xx(dev);
return b53_set_jumbo(dev, enable_jumbo, allow_10_100); }