target/linux/realtek/patches-5.10/710-net-phy-sfp-re-probe-modules-on-DEV_UP-event.patch

   1 From a381ac0aa281fdb0b41a39d8a2bc08fd88f6db92 Mon Sep 17 00:00:00 2001
   2 From: Antoine Tenart <antoine.tenart@bootlin.com>
   3 Date: Tue, 25 Feb 2020 16:32:37 +0100
   4 Subject: [PATCH 1/3] net: phy: sfp: re-probe modules on DEV_UP event
   5
   6 Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
   7 ---
   8  drivers/net/phy/sfp.c | 7 +++++++
   9  1 file changed, 7 insertions(+)
  10
  11 --- a/drivers/net/phy/sfp.c
  12 +++ b/drivers/net/phy/sfp.c
  13 @@ -1968,6 +1968,13 @@ static void sfp_sm_module(struct sfp *sf
  14                 return;
  15         }
  16
  17 +       /* Re-probe the SFP modules when an interface is brought up, as the MAC
  18 +        * do not report its link status (This means Phylink wouldn't be
  19 +        * triggered if the PHY had a link before a MAC is brought up).
  20 +        */
  21 +       if (event == SFP_E_DEV_UP && sfp->sm_mod_state == SFP_MOD_PRESENT)
  22 +               sfp_sm_mod_next(sfp, SFP_MOD_PROBE, T_SERIAL);
  23 +
  24         switch (sfp->sm_mod_state) {
  25         default:
  26                 if (event == SFP_E_INSERT) {