rt2x00: Implement watchdog monitoring
Implement watchdog monitoring for USB devices (PCI support can
be added later). This will determine if URBs being uploaded to
the hardware are actually returning. Both rt2500usb and rt2800usb
have shown that URBs being uploaded can remain hanging without
being released by the hardware.
By using this watchdog, a queue can be reset when this occurs.
For rt2800usb it has been tested that the connection is preserved
even though this interruption.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index bf5e3f3..97b6261 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -332,6 +332,11 @@
* Work structure for scheduling periodic link tuning.
*/
struct delayed_work work;
+
+ /*
+ * Work structure for scheduling periodic watchdog monitoring.
+ */
+ struct delayed_work watchdog_work;
};
/*
@@ -543,6 +548,7 @@
struct link_qual *qual);
void (*link_tuner) (struct rt2x00_dev *rt2x00dev,
struct link_qual *qual, const u32 count);
+ void (*watchdog) (struct rt2x00_dev *rt2x00dev);
/*
* TX control handlers
@@ -648,6 +654,7 @@
DRIVER_SUPPORT_CONTROL_FILTERS,
DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL,
DRIVER_SUPPORT_LINK_TUNING,
+ DRIVER_SUPPORT_WATCHDOG,
/*
* Driver configuration