git.ipfire.org Git - thirdparty/openwrt.git/blob

   1 From 9b6c767c312b4709e9aeb2314a6b47863e7fb72d Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
   3 Date: Sat, 14 Jun 2025 09:59:52 +0200
   4 Subject: [PATCH] net: dsa: b53: prevent FAST_AGE access on BCM5325
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 BCM5325 doesn't implement FAST_AGE registers so we should avoid reading or
  10 writing them.
  11
  12 Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
  13 Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
  14 Link: https://patch.msgid.link/20250614080000.1884236-7-noltari@gmail.com
  15 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  16 ---
  17  drivers/net/dsa/b53/b53_common.c | 9 +++++++++
  18  1 file changed, 9 insertions(+)
  19
  20 --- a/drivers/net/dsa/b53/b53_common.c
  21 +++ b/drivers/net/dsa/b53/b53_common.c
  22 @@ -487,6 +487,9 @@ static int b53_flush_arl(struct b53_devi
  23  {
  24         unsigned int i;
  25
  26 +       if (is5325(dev))
  27 +               return 0;
  28 +
  29         b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
  30                    FAST_AGE_DONE | FAST_AGE_DYNAMIC | mask);
  31
  32 @@ -511,6 +514,9 @@ out:
  33
  34  static int b53_fast_age_port(struct b53_device *dev, int port)
  35  {
  36 +       if (is5325(dev))
  37 +               return 0;
  38 +
  39         b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_PORT_CTRL, port);
  40
  41         return b53_flush_arl(dev, FAST_AGE_PORT);
  42 @@ -518,6 +524,9 @@ static int b53_fast_age_port(struct b53_
  43
  44  static int b53_fast_age_vlan(struct b53_device *dev, u16 vid)
  45  {
  46 +       if (is5325(dev))
  47 +               return 0;
  48 +
  49         b53_write16(dev, B53_CTRL_PAGE, B53_FAST_AGE_VID_CTRL, vid);
  50
  51         return b53_flush_arl(dev, FAST_AGE_VLAN);