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From: Jakub Kicinski <kuba@kernel.org>
To: Moritz Fischer <mdf@kernel.org>
Cc: netdev@vger.kernel.org, davem@davemloft.net,
	linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org,
	lucyyan@google.com, moritzf@google.com,
	James.Bottomley@hansenpartnership.com
Subject: Re: [PATCH/RFC net-next v3] net: dec: tulip: de2104x: Add shutdown handler to stop NIC
Date: Tue, 27 Oct 2020 16:16:06 -0700	[thread overview]
Message-ID: <20201027161606.477a445e@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> (raw)
In-Reply-To: <20201023202834.660091-1-mdf@kernel.org>

On Fri, 23 Oct 2020 13:28:34 -0700 Moritz Fischer wrote:
> diff --git a/drivers/net/ethernet/dec/tulip/de2104x.c b/drivers/net/ethernet/dec/tulip/de2104x.c
> index d9f6c19940ef..ea7442cc8e75 100644
> --- a/drivers/net/ethernet/dec/tulip/de2104x.c
> +++ b/drivers/net/ethernet/dec/tulip/de2104x.c
> @@ -2175,11 +2175,19 @@ static int __maybe_unused de_resume(struct device *dev_d)
>  
>  static SIMPLE_DEV_PM_OPS(de_pm_ops, de_suspend, de_resume);
>  
> +static void de_shutdown(struct pci_dev *pdev)
> +{
> +	struct net_device *dev = pci_get_drvdata(pdev);
> +
> +	de_close(dev);

Apparently I get all the best ideas when I'm about to apply something..

I don't think you can just call de_close() like that, because 
(a) it may expect rtnl_lock() to be held, and (b) it may not be open.

Perhaps call unregister_netdev(dev) - that'll close the device.
Or rtnl_lock(); dev_close(dev); rtnl_unlock();

> +}
> +
>  static struct pci_driver de_driver = {
>  	.name		= DRV_NAME,
>  	.id_table	= de_pci_tbl,
>  	.probe		= de_init_one,
>  	.remove		= de_remove_one,
> +	.shutdown	= de_shutdown,
>  	.driver.pm	= &de_pm_ops,
>  };
>  


  reply	other threads:[~2020-10-28  1:49 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-23 20:28 [PATCH/RFC net-next v3] net: dec: tulip: de2104x: Add shutdown handler to stop NIC Moritz Fischer
2020-10-27 23:16 ` Jakub Kicinski [this message]
2020-10-28  1:59   ` Moritz Fischer
2020-10-28 16:40     ` Jakub Kicinski

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