[PATCH] USB: PM support for zd1201
This patch enables power management (suspend, resume) support for zd1201.
It fixes problems after wakeup for me, but these problems did not appear
everytime without this patch. it's a bit empirical, based on what the
usbnet does, so maybe not correct... Maybe someone can give it a look
before it's applied.
Signed-off-by: Colin Leroy <colin@colino.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/net/zd1201.c b/drivers/usb/net/zd1201.c
index 341ae5f..eb0bff5 100644
--- a/drivers/usb/net/zd1201.c
+++ b/drivers/usb/net/zd1201.c
@@ -1884,12 +1884,50 @@
kfree(zd);
}
+#ifdef CONFIG_PM
+
+static int zd1201_suspend(struct usb_interface *interface,
+ pm_message_t message)
+{
+ struct zd1201 *zd = usb_get_intfdata(interface);
+
+ netif_device_detach(zd->dev);
+
+ zd->was_enabled = zd->mac_enabled;
+
+ if (zd->was_enabled)
+ return zd1201_disable(zd);
+ else
+ return 0;
+}
+
+static int zd1201_resume(struct usb_interface *interface)
+{
+ struct zd1201 *zd = usb_get_intfdata(interface);
+
+ netif_device_attach(zd->dev);
+
+ if (zd->was_enabled)
+ return zd1201_enable(zd);
+ else
+ return 0;
+}
+
+#else
+
+#define zd1201_suspend NULL
+#define zd1201_resume NULL
+
+#endif
+
static struct usb_driver zd1201_usb = {
.owner = THIS_MODULE,
.name = "zd1201",
.probe = zd1201_probe,
.disconnect = zd1201_disconnect,
.id_table = zd1201_table,
+ .suspend = zd1201_suspend,
+ .resume = zd1201_resume,
};
static int __init zd1201_init(void)