mwifiex: fix radar detection issue

It's been observed that firmware sends RADAR detected event without
specifying bss_num/bss_type. Also, the event body is empty.
Currently the event is being ignored by driver.

This patch checks on which interface 11H is active, accordingly fills
bss_num/bss_type and handles the event. Condition
"if (le32_to_cpu(rdr_event->passed))" which always fails is also removed.

Signed-off-by: Ganapathi Bhat <gbhat@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

1 files changed, 16 insertions, 2 deletions

diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
index c29f26d..d433aa0 100644
--- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c
+++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
@@ -480,13 +480,27 @@ int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter)
  */
 int mwifiex_process_event(struct mwifiex_adapter *adapter)
 {
-	int ret;
+	int ret, i;
 	struct mwifiex_private *priv =
 		mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 	struct sk_buff *skb = adapter->event_skb;
-	u32 eventcause = adapter->event_cause;
+	u32 eventcause;
 	struct mwifiex_rxinfo *rx_info;
 
+	if ((adapter->event_cause & EVENT_ID_MASK) == EVENT_RADAR_DETECTED) {
+		for (i = 0; i < adapter->priv_num; i++) {
+			priv = adapter->priv[i];
+			if (priv && mwifiex_is_11h_active(priv)) {
+				adapter->event_cause |=
+					((priv->bss_num & 0xff) << 16) |
+					((priv->bss_type & 0xff) << 24);
+				break;
+			}
+		}
+	}
+
+	eventcause = adapter->event_cause;
+
 	/* Save the last event to debug log */
 	adapter->dbg.last_event_index =
 			(adapter->dbg.last_event_index + 1) % DBG_CMD_NUM;