[4/4] wl1251: wait for join command complete event

Commit Message

Grazvydas Ignotas Aug. 17, 2010, 7:46 p.m. UTC

None

Patch

diff --git a/drivers/net/wireless/wl12xx/wl1251_boot.c b/drivers/net/wireless/wl12xx/wl1251_boot.c
index 65e0416..5e65f47 100644
--- a/drivers/net/wireless/wl12xx/wl1251_boot.c
+++ b/drivers/net/wireless/wl12xx/wl1251_boot.c
@@ -302,7 +302,7 @@  int wl1251_boot_run_firmware(struct wl1251 *wl)
 		ROAMING_TRIGGER_LOW_RSSI_EVENT_ID |
 		ROAMING_TRIGGER_REGAINED_RSSI_EVENT_ID |
 		REGAINED_BSS_EVENT_ID | BT_PTA_SENSE_EVENT_ID |
-		BT_PTA_PREDICTION_EVENT_ID;
+		BT_PTA_PREDICTION_EVENT_ID | JOIN_EVENT_COMPLETE_ID;
 
 	ret = wl1251_event_unmask(wl);
 	if (ret < 0) {
diff --git a/drivers/net/wireless/wl12xx/wl1251_event.c b/drivers/net/wireless/wl12xx/wl1251_event.c
index 020d764..e093a1c 100644
--- a/drivers/net/wireless/wl12xx/wl1251_event.c
+++ b/drivers/net/wireless/wl12xx/wl1251_event.c
@@ -97,6 +97,35 @@  static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox)
 	return 0;
 }
 
+/*
+ * Poll the mailbox event field until any of the bits in the mask is set or a
+ * timeout occurs (WL1251_EVENT_TIMEOUT in msecs)
+ */
+int wl1251_event_wait(struct wl1251 *wl, u32 mask, int timeout_ms)
+{
+	u32 events_vector, event;
+	unsigned long timeout;
+
+	timeout = jiffies + msecs_to_jiffies(timeout_ms);
+
+	do {
+		if (time_after(jiffies, timeout))
+			return -ETIMEDOUT;
+
+		msleep(1);
+
+		/* read from both event fields */
+		wl1251_mem_read(wl, wl->mbox_ptr[0], &events_vector,
+				sizeof(events_vector));
+		event = events_vector & mask;
+		wl1251_mem_read(wl, wl->mbox_ptr[1], &events_vector,
+				sizeof(events_vector));
+		event |= events_vector & mask;
+	} while (!event);
+
+	return 0;
+}
+
 int wl1251_event_unmask(struct wl1251 *wl)
 {
 	int ret;
diff --git a/drivers/net/wireless/wl12xx/wl1251_event.h b/drivers/net/wireless/wl12xx/wl1251_event.h
index f48a2b6..ec45647 100644
--- a/drivers/net/wireless/wl12xx/wl1251_event.h
+++ b/drivers/net/wireless/wl12xx/wl1251_event.h
@@ -117,5 +117,6 @@  struct event_mailbox {
 int wl1251_event_unmask(struct wl1251 *wl);
 void wl1251_event_mbox_config(struct wl1251 *wl);
 int wl1251_event_handle(struct wl1251 *wl, u8 mbox);
+int wl1251_event_wait(struct wl1251 *wl, u32 mask, int timeout_ms);
 
 #endif
diff --git a/drivers/net/wireless/wl12xx/wl1251_main.c b/drivers/net/wireless/wl12xx/wl1251_main.c
index 51474b6..c81e95b 100644
--- a/drivers/net/wireless/wl12xx/wl1251_main.c
+++ b/drivers/net/wireless/wl12xx/wl1251_main.c
@@ -339,11 +339,9 @@  static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
 	if (ret < 0)
 		goto out;
 
-	/*
-	 * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
-	 * locking we just sleep instead, for now
-	 */
-	msleep(10);
+	ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
+	if (ret < 0)
+		wl1251_warning("join timeout");
 
 out:
 	return ret;