linux-kernel - Re: [PATCH V2 net-next 1/8] net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC

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Date:   Tue, 13 Jun 2017 16:53:03 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Salil Mehta <salil.mehta@...wei.com>
Cc:     <davem@...emloft.net>, <yisen.zhuang@...wei.com>,
        <huangdaode@...ilicon.com>, <lipeng321@...wei.com>,
        <mehta.salil.lnk@...il.com>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linuxarm@...wei.com>
Subject: Re: [PATCH V2 net-next 1/8] net: hns3: Add support of HNS3 Ethernet
 Driver for hip08 SoC

On Wed, 14 Jun 2017 00:10:28 +0100
Salil Mehta <salil.mehta@...wei.com> wrote:

> +static irqreturn_t hns3_irq_handle(int irq, void *dev)
> +{
> +	struct hns3_enet_tqp_vector *tqp_vector = dev;
> +
> +	napi_schedule(&tqp_vector->napi);

In order to do NAPI correctly, the IRQ must be disabled.
If you are using MSI, then hardware will do it for you.

But I don't see you ever enable MSI or MSI-x in this driver.
Are you just assuming that the driver only works on one platform
and that platform has PCI MSI-X?