netdev - Re: [PATCH net-next 10/18] net: mvpp2: use the GoP interrupt for link status changes

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Date:   Tue, 25 Jul 2017 10:47:35 +0200
From:   Antoine Tenart <antoine.tenart@...e-electrons.com>
To:     Marcin Wojtas <mw@...ihalf.com>
Cc:     Antoine Tenart <antoine.tenart@...e-electrons.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clément 
        <gregory.clement@...e-electrons.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        nadavh@...vell.com,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Stefan Chulski <stefanc@...vell.com>, netdev@...r.kernel.org,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH net-next 10/18] net: mvpp2: use the GoP interrupt for
 link status changes

Hi Marcin,

On Tue, Jul 25, 2017 at 12:58:20AM +0200, Marcin Wojtas wrote:
> 
> This patch requires also:
> 
> diff --git a/drivers/net/ethernet/marvell/mvpp2.c
> b/drivers/net/ethernet/marvell/mvpp2.c
> index 4694d4f..369819f 100644
> --- a/drivers/net/ethernet/marvell/mvpp2.c
> +++ b/drivers/net/ethernet/marvell/mvpp2.c
> @@ -6625,6 +6625,7 @@ static int mvpp2_stop(struct net_device *dev)
>  {
>         struct mvpp2_port *port = netdev_priv(dev);
>         struct mvpp2_port_pcpu *port_pcpu;
> +       struct mvpp2 *priv = port->priv;
>         int cpu;
> 
>         mvpp2_stop_dev(port);
> @@ -6633,6 +6634,10 @@ static int mvpp2_stop(struct net_device *dev)
>         /* Mask interrupts on all CPUs */
>         on_each_cpu(mvpp2_interrupts_mask, port, 1);
> 
> +       if (priv->hw_version == MVPP22 && !port->phy_node && port->link_irq) {
> +               free_irq(port->link_irq, port);
> +       }
> +
>         free_irq(port->irq, port);
>         for_each_present_cpu(cpu) {
>                 port_pcpu = per_cpu_ptr(port->pcpu, cpu);
> 
> Otherwise a sequence: ifconfig up/down/up results in faults.

You're right, thanks for the patch! I'll squash it in v2.

Thanks!
Antoine

-- 
Antoine Ténart, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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