From: Jonas Gorski Date: Fri, 28 Nov 2025 08:06:19 +0000 (+0100) Subject: net: dsa: b53: fix VLAN_ID_IDX write size for BCM5325/65 X-Git-Tag: v6.19-rc1~170^2~13^2~6 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6f268e275c74dae0536e0b61982a8db25bcf4f16;p=thirdparty%2Fkernel%2Flinux.git net: dsa: b53: fix VLAN_ID_IDX write size for BCM5325/65 Since BCM5325 and BCM5365 only support up to 256 VLANs, the VLAN_ID_IDX register is only 8 bit wide, not 16 bit, so use an appropriate accessor. Fixes: c45655386e53 ("net: dsa: b53: add support for FDB operations on 5325/5365") Reviewed-by: Florian Fainelli Tested-by: Álvaro Fernández Rojas Signed-off-by: Jonas Gorski Link: https://patch.msgid.link/20251128080625.27181-2-jonas.gorski@gmail.com Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 72c85cd34a4ee..7f24d2d8f9388 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -1966,8 +1966,12 @@ static int b53_arl_op(struct b53_device *dev, int op, int port, /* Perform a read for the given MAC and VID */ b53_write48(dev, B53_ARLIO_PAGE, B53_MAC_ADDR_IDX, mac); - if (!is5325m(dev)) - b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid); + if (!is5325m(dev)) { + if (is5325(dev) || is5365(dev)) + b53_write8(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid); + else + b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid); + } /* Issue a read operation for this MAC */ ret = b53_arl_rw_op(dev, 1);