git.openwrt.org Git - openwrt/staging/xback.git/blob

   1 From 93a6cc6b04f305aca589828b70449a873474847d Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Fri, 9 Aug 2019 08:52:16 +0100
   4 Subject: [PATCH 754/782] Revert "net: bcmgenet: Workaround for Pi 4B network
   5  issue"
   6
   7 This reverts commit 9c0770ea7682a84a22c33410ef6870af258abacc.
   8 ---
   9  .../net/ethernet/broadcom/genet/bcmgenet.c    | 22 -------------------
  10  1 file changed, 22 deletions(-)
  11
  12 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
  13 +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
  14 @@ -72,10 +72,6 @@
  15  #define GENET_RDMA_REG_OFF     (priv->hw_params->rdma_offset + \
  16                                 TOTAL_DESC * DMA_DESC_SIZE)
  17
  18 -static bool force_reneg = false;
  19 -module_param(force_reneg, bool, 0444);
  20 -MODULE_PARM_DESC(force_reneg, "Force a renegotiation after the initial link-up");
  21 -
  22  static inline void bcmgenet_writel(u32 value, void __iomem *offset)
  23  {
  24         /* MIPS chips strapped for BE will automagically configure the
  25 @@ -2614,7 +2610,6 @@ static void bcmgenet_irq_task(struct wor
  26         unsigned int status;
  27         struct bcmgenet_priv *priv = container_of(
  28                         work, struct bcmgenet_priv, bcmgenet_irq_work);
  29 -       static int first_link = 1;
  30
  31         netif_dbg(priv, intr, priv->dev, "%s\n", __func__);
  32
  33 @@ -2627,23 +2622,6 @@ static void bcmgenet_irq_task(struct wor
  34         if (status & UMAC_IRQ_LINK_EVENT) {
  35                 priv->dev->phydev->link = !!(status & UMAC_IRQ_LINK_UP);
  36                 phy_mac_interrupt(priv->dev->phydev);
  37 -
  38 -               if (priv->dev->phydev->link && first_link) {
  39 -                       first_link = 0;
  40 -                       /*
  41 -                        * HACK: Some Pi4Bs, when paired with some switches,
  42 -                        * come up in a strange state where they are unable to
  43 -                        * transmit, causing them to fail to get an IP address.
  44 -                        * Although the failure mechanism is not yet understood,
  45 -                        * forcing renegotiation at this point has been shown
  46 -                        * to be effective in avoiding the problem.
  47 -                        */
  48 -                       if (force_reneg) {
  49 -                               dev_info(&priv->pdev->dev,
  50 -                                        "Forcing renegotiation\n");
  51 -                               genphy_restart_aneg(priv->dev->phydev);
  52 -                       }
  53 -               }
  54         }
  55  }
  56