wl1251: Fix queue stopping/waking for TX path
This patch was adapted from 06f7bc7db79fabe6b2ec16eff0f59e4acc21eb72
(from linus's linux-2.6 tree of kernel.org)
here's the original message:
The queue stopping/waking functionality was broken in a way that could
cause huge latencies in TX transfers and even cause the TX to stall in the
right circumstances. Correct these problems.
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Acked-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/wl12xx/wl1251.h b/drivers/net/wireless/wl12xx/wl1251.h
index 9bc4fea3..e113d4c 100644
--- a/drivers/net/wireless/wl12xx/wl1251.h
+++ b/drivers/net/wireless/wl12xx/wl1251.h
@@ -272,6 +272,8 @@
int irq;
bool use_eeprom;
+ spinlock_t wl_lock;
+
enum wl1251_state state;
struct mutex mutex;
@@ -399,7 +401,8 @@
#define WL1251_DEFAULT_POWER_LEVEL 20
-#define WL1251_TX_QUEUE_MAX_LENGTH 20
+#define WL1251_TX_QUEUE_LOW_WATERMARK 10
+#define WL1251_TX_QUEUE_HIGH_WATERMARK 25
#define WL1251_DEFAULT_BEACON_INT 100
#define WL1251_DEFAULT_DTIM_PERIOD 1