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    Subject[PATCH] r8169: add phy_reset parameter
    When booting over the network the physical link will already be up
    and configured appropriately, so there is no need to reset it and
    cause auto-negotiation to occur again. Adding an option to disable
    this makes it possible to avoid a 2 second delay while booting.

    Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
    ---
    drivers/net/r8169.c | 6 ++++++
    1 files changed, 6 insertions(+), 0 deletions(-)

    diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
    index 4e22462..ca34a63 100644
    --- a/drivers/net/r8169.c
    +++ b/drivers/net/r8169.c
    @@ -187,6 +187,7 @@ MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);

    static int rx_copybreak = 200;
    static int use_dac;
    +static int phy_reset;
    static struct {
    u32 msg_enable;
    } debug = { -1 };
    @@ -504,6 +505,8 @@ module_param(rx_copybreak, int, 0);
    MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
    module_param(use_dac, int, 0);
    MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
    +module_param(phy_reset, int, 1);
    +MODULE_PARM_DESC(phy_reset, "Reset PHY when initialising device");
    module_param_named(debug, debug.msg_enable, int, 0);
    MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
    MODULE_LICENSE("GPL");
    @@ -1798,6 +1801,9 @@ static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
    mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
    }

    + if (!phy_reset)
    + return;
    +
    rtl8169_phy_reset(dev, tp);

    /*
    --
    1.6.3.1
    --
    Simon Arlott


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