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Message-ID: <0af3a54f-09da-4a8b-b385-c6968334ace4@lunn.ch>
Date:   Sat, 4 Nov 2023 20:52:27 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Justin Lai <justinlai0215@...ltek.com>
Cc:     kuba@...nel.org, davem@...emloft.net, edumazet@...gle.com,
        pabeni@...hat.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, pkshih@...ltek.com, larry.chiu@...ltek.com
Subject: Re: [PATCH net-next v10 09/13] net:ethernet:realtek:rtase: Implement
 pci_driver suspend and resume function

> +static int rtase_resume(struct pci_dev *pdev)
> +{
> +	struct net_device *dev = pci_get_drvdata(pdev);
> +	struct rtase_private *tp = netdev_priv(dev);
> +	int ret;
> +
> +	pci_set_power_state(pdev, PCI_D0);
> +	pci_restore_state(pdev);
> +	pci_enable_wake(pdev, PCI_D0, 0);
> +
> +	/* restore last modified mac address */
> +	rtase_rar_set(tp, dev->dev_addr);
> +
> +	if (!netif_running(dev))
> +		goto out;
> +
> +	rtase_wait_for_quiescence(dev);
> +	netif_device_attach(dev);
> +
> +	rtase_tx_clear(tp);
> +	rtase_rx_clear(tp);
> +
> +	ret = rtase_init_ring(dev);
> +	if (ret)
> +		netdev_alert(dev, "unable to init ring\n");

If you fail to init the ring, is it safe to keep going?

	Andrew

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