target/linux/generic/backport-5.4/721-v5.5-net-sfp-move-tx-disable-on-device-down-to-main-state.patch

   1 From 7e89b737c97a9e7a81dd1584000bc136b92f12fd Mon Sep 17 00:00:00 2001
   2 From: Russell King <rmk+kernel@armlinux.org.uk>
   3 Date: Fri, 11 Oct 2019 22:14:47 +0100
   4 Subject: [PATCH 619/660] net: sfp: move tx disable on device down to main
   5  state machine
   6
   7 Move the tx disable assertion on device down to the main state
   8 machine.
   9
  10 Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
  11 ---
  12  drivers/net/phy/sfp.c | 10 ++--------
  13  1 file changed, 2 insertions(+), 8 deletions(-)
  14
  15 --- a/drivers/net/phy/sfp.c
  16 +++ b/drivers/net/phy/sfp.c
  17 @@ -1489,15 +1489,8 @@ static void sfp_sm_device(struct sfp *sf
  18                 break;
  19
  20         case SFP_DEV_UP:
  21 -               if (event == SFP_E_DEV_DOWN) {
  22 -                       /* If the module has a PHY, avoid raising TX disable
  23 -                        * as this resets the PHY. Otherwise, raise it to
  24 -                        * turn the laser off.
  25 -                        */
  26 -                       if (!sfp->mod_phy)
  27 -                               sfp_module_tx_disable(sfp);
  28 +               if (event == SFP_E_DEV_DOWN)
  29                         sfp->sm_dev_state = SFP_DEV_DOWN;
  30 -               }
  31                 break;
  32         }
  33  }
  34 @@ -1559,6 +1552,7 @@ static void sfp_sm_main(struct sfp *sfp,
  35                         sfp_sm_link_down(sfp);
  36                 if (sfp->mod_phy)
  37                         sfp_sm_phy_detach(sfp);
  38 +               sfp_module_tx_disable(sfp);
  39                 sfp_sm_next(sfp, SFP_S_DOWN, 0);
  40                 return;
  41         }