[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 <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
commit a3c900bb8cbacfecf0be51313e43f330663266a1
tree 31351207f18014c9d925422db2efff936b959c0e
parent 507ca9bc0476662f3463888d583864834eab1e11
author Colin Leroy <[EMAIL PROTECTED]> Sun, 24 Apr 2005 16:37:15 -0700
committer Greg Kroah-Hartman <[EMAIL PROTECTED]> Mon, 27 Jun 2005 14:43:47 -0700
drivers/usb/net/zd1201.c | 38 ++++++++++++++++++++++++++++++++++++++
drivers/usb/net/zd1201.h | 1 +
2 files changed, 39 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/net/zd1201.c b/drivers/usb/net/zd1201.c
--- a/drivers/usb/net/zd1201.c
+++ b/drivers/usb/net/zd1201.c
@@ -1884,12 +1884,50 @@ static void zd1201_disconnect(struct usb
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)
diff --git a/drivers/usb/net/zd1201.h b/drivers/usb/net/zd1201.h
--- a/drivers/usb/net/zd1201.h
+++ b/drivers/usb/net/zd1201.h
@@ -46,6 +46,7 @@ struct zd1201 {
char essid[IW_ESSID_MAX_SIZE+1];
int essidlen;
int mac_enabled;
+ int was_enabled;
int monitor;
int encode_enabled;
int encode_restricted;
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