target/linux/layerscape/patches-5.4/701-net-0398-enetc-add-ioctl-support-for-PHY-related-ops.patch

   1 From d3fe9bfb9c854ce3acb7db099d9c9476e4fe2ea7 Mon Sep 17 00:00:00 2001
   2 From: Michael Walle <michael@walle.cc>
   3 Date: Thu, 7 Nov 2019 09:39:37 +0100
   4 Subject: [PATCH] enetc: add ioctl() support for PHY-related ops
   5
   6 If there is an attached PHY try to handle the requested ioctl with its
   7 handler, which allows the userspace to access PHY registers, for
   8 example. This will make mii-diag and similar tools work.
   9
  10 Signed-off-by: Michael Walle <michael@walle.cc>
  11 Reviewed-by: Andrew Lunn <andrew@lunn.ch>
  12 Signed-off-by: David S. Miller <davem@davemloft.net>
  13 ---
  14  drivers/net/ethernet/freescale/enetc/enetc.c | 5 ++++-
  15  1 file changed, 4 insertions(+), 1 deletion(-)
  16
  17 --- a/drivers/net/ethernet/freescale/enetc/enetc.c
  18 +++ b/drivers/net/ethernet/freescale/enetc/enetc.c
  19 @@ -1661,7 +1661,10 @@ int enetc_ioctl(struct net_device *ndev,
  20         if (cmd == SIOCGHWTSTAMP)
  21                 return enetc_hwtstamp_get(ndev, rq);
  22  #endif
  23 -       return -EINVAL;
  24 +
  25 +       if (!ndev->phydev)
  26 +               return -EINVAL;
  27 +       return phy_mii_ioctl(ndev->phydev, rq, cmd);
  28  }
  29
  30  int enetc_alloc_msix(struct enetc_ndev_priv *priv)