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SubjectRe: swsuspend not working
On Tue, Jul 20, 2004 at 03:17:48PM +0200, Pavel Machek wrote:
> > ? Destination Host Unreachable ? and nothing more. The interrupt count of
> > the card is increasing, however. Unloading and reloading ne2k_pci fixes
> > that.
>
> Teach ne2k_pci to do on suspend what it does on unload, and to do on
> resume what it does on load. Should be easy.

« Should be easy » is easily said. Well.

The following patch to drivers/net/ne2k-pci.c in 2.6.8-rc1 happens to make
my pci ethernet card (Realtek Semiconductor Co., Ltd. RTL-8029(AS))
suspend to S4 and resume properly.

I know nothing on suspend/resume architecture, I know nothing on
programming ethernet card, I know nothing on patching device drivers; I
just looked at other drivers, picked function calls that had nice looking
names and put them together in ne2k_pci.c. Miraculously, it works.

Do you think it could get in ?

Éric Brunet

--- ne2k-pci.c.orig 2004-07-20 22:15:30.000000000 +0200
+++ ne2k-pci.c 2004-07-31 19:48:38.000000000 +0200
@@ -653,12 +653,43 @@
pci_set_drvdata(pdev, NULL);
}

+#ifdef CONFIG_PM
+static int ne2k_pci_suspend (struct pci_dev *pdev, u32 state)
+{
+ struct net_device *dev = pci_get_drvdata (pdev);
+
+ netif_device_detach(dev);
+ ne2k_pci_close(dev);
+ ne2k_pci_reset_8390(dev);
+ pci_set_power_state (pdev, state);
+
+ return 0;
+}
+static int ne2k_pci_resume (struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata (pdev);
+
+ pci_set_power_state(pdev, 0);
+ ne2k_pci_reset_8390(dev);
+ ne2k_pci_open(dev);
+ netif_device_attach(dev);
+
+ return 0;
+}
+
+#endif /* CONFIG_PM */
+

static struct pci_driver ne2k_driver = {
.name = DRV_NAME,
.probe = ne2k_pci_init_one,
.remove = __devexit_p(ne2k_pci_remove_one),
.id_table = ne2k_pci_tbl,
+#ifdef CONFIG_PM
+ .suspend = ne2k_pci_suspend,
+ .resume = ne2k_pci_resume,
+#endif /* CONFIG_PM */
+
};


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