Larry wrote this patch in Dec 2008 in response to a posting of
rtl8187 suspend/resume problem on the linux-wireless mailing list.
Hin-Tak posted this to the kernel bugzilla #11887. It has since been tested
by a few people with mixed results - hibernation seems to work
(rather than hang), suspend-to-ram still doesn't. Resume in some
circumstances requires re-inserting the device where possible
(i.e. not built-in to laptops).
Larry later wrote another based on _stop()/_start().
Apparently a reset_resume() method is needed if the
device is physically removed during hibernation.
Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
Signed-off-by: Hin-Tak Leung <htl10@xxxxxxxxxxxxxxxxxxxxx>
Tested-by: Michael Lashkevich <lashkevi@xxxxxxxxxxxx>
Tested-by: "Alan Jenkins" <alan-jenkins@xxxxxxxxxxxxxx>
CC: Herton Ronaldo Krzesinski <herton@xxxxxxxxxxxxxxx>
---
drivers/net/wireless/rtl818x/rtl8187_dev.c | 30 ++++++++++++++++++++++++++++
1 files changed, 30 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/rtl818x/rtl8187_dev.c b/drivers/net/wireless/rtl818x/rtl8187_dev.c
index 7c3966e..4c0e560 100644
--- a/drivers/net/wireless/rtl818x/rtl8187_dev.c
+++ b/drivers/net/wireless/rtl818x/rtl8187_dev.c
@@ -1526,6 +1526,32 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
return err;
}
+#ifdef CONFIG_PM
+
+static int rtl8187_suspend(struct usb_interface *intf, pm_message_t state)
+{
+ struct ieee80211_hw *dev = usb_get_intfdata(intf);
+ struct rtl8187_priv *priv;
+ int time;
+
+ if (!dev)
+ return 0;
+
+ priv = dev->priv;
+
+ time = usb_wait_anchor_empty_timeout(&priv->anchored, 1000);
+ if (!time)
+ usb_kill_anchored_urbs(&priv->anchored);
+ return 0;
+}
+
+static int rtl8187_resume(struct usb_interface *intf)
+{
+ return 0;
+}
+
+#endif /* CONFIG_PM */
+
static void __devexit rtl8187_disconnect(struct usb_interface *intf)
{
struct ieee80211_hw *dev = usb_get_intfdata(intf);
@@ -1551,6 +1577,10 @@ static struct usb_driver rtl8187_driver = {
.id_table = rtl8187_table,
.probe = rtl8187_probe,
.disconnect = __devexit_p(rtl8187_disconnect),
+#ifdef CONFIG_PM
+ .suspend = rtl8187_suspend,
+ .resume = rtl8187_resume,
+#endif /* CONFIG_PM */
};
static int __init rtl8187_init(void)
--
1.6.2.2
--
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