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From:   Joel Stanley <joel@jms.id.au>
Date:   Tue, 20 Oct 2020 04:14:42 +0000
Message-ID: <CACPK8Xc8NSBzN+LnZ=b5t7ODjLg9B6m2WDdR-C9SRWaDEXwOtQ@mail.gmail.com>
Subject: Re: [PATCH 4/4] ftgmac100: Restart MAC HW once
To:     Dylan Hung <dylan_hung@aspeedtech.com>
Cc:     "David S . Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>, netdev@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Po-Yu Chuang <ratbert@faraday-tech.com>,
        linux-aspeed <linux-aspeed@lists.ozlabs.org>,
        OpenBMC Maillist <openbmc@lists.ozlabs.org>,
        BMC-SW <BMC-SW@aspeedtech.com>
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On Mon, 19 Oct 2020 at 08:57, Dylan Hung <dylan_hung@aspeedtech.com> wrote:
>
> The interrupt handler may set the flag to reset the mac in the future,
> but that flag is not cleared once the reset has occured.
>
> Fixes: 10cbd6407609 ("ftgmac100: Rework NAPI & interrupts handling")
> Signed-off-by: Dylan Hung <dylan_hung@aspeedtech.com>
> Signed-off-by: Joel Stanley <joel@jms.id.au>

Reviewed-by: Joel Stanley <joel@jms.id.au>

> ---
>  drivers/net/ethernet/faraday/ftgmac100.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
> index 0c67fc3e27df..57736b049de3 100644
> --- a/drivers/net/ethernet/faraday/ftgmac100.c
> +++ b/drivers/net/ethernet/faraday/ftgmac100.c
> @@ -1326,6 +1326,7 @@ static int ftgmac100_poll(struct napi_struct *napi, int budget)
>          */
>         if (unlikely(priv->need_mac_restart)) {
>                 ftgmac100_start_hw(priv);
> +               priv->need_mac_restart = false;
>
>                 /* Re-enable "bad" interrupts */
>                 ftgmac100_write(FTGMAC100_INT_BAD, priv->base + FTGMAC100_OFFSET_IER);
> --
> 2.17.1
>