netdev - RE: [PATCH net-next v10 09/13] net:ethernet:realtek:rtase: Implement pci

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Date: Wed, 15 Nov 2023 06:22:43 +0000
From: Justin Lai <justinlai0215@...ltek.com>
To: Andrew Lunn <andrew@...n.ch>
CC: "kuba@...nel.org" <kuba@...nel.org>,
        "davem@...emloft.net"
	<davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>,
        Ping-Ke Shih <pkshih@...ltek.com>,
        Larry Chiu
	<larry.chiu@...ltek.com>
Subject: RE: [PATCH net-next v10 09/13] net:ethernet:realtek:rtase: Implement pci_driver suspend and resume function



> -----Original Message-----
> From: Andrew Lunn <andrew@...n.ch>
> Sent: Sunday, November 5, 2023 3:52 AM
> 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;
> Ping-Ke Shih <pkshih@...ltek.com>; Larry Chiu <larry.chiu@...ltek.com>
> Subject: Re: [PATCH net-next v10 09/13] net:ethernet:realtek:rtase: Implement
> pci_driver suspend and resume function
> 
> 
> External mail.
> 
> 
> 
> > +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


Thanks for your reply, I will add error handling of rtase_init_ring()