P2P: Avoid resetting pending_listen_freq if p2p_listen is pending

If p2p_listen is called while previous listen command's
remain_on_channel event is pending, the p2p_listen would fail
and it used to clear pending_listen_freq. Now when the remain-
on-channel event comes from the driver, the pending_listen_freq
doesn't match and gets ignored. This was leading to a case
where listen state was getting stuck (in case of WAIT_PEER_CONNECT
state).

Signed-off-by: Jithu Jance <jithu@broadcom.com>

src/p2p/p2p.c

@@ -238,6 +238,12 @@ static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 	p2p_dbg(p2p, "Starting short listen state (state=%s)",
 		p2p_state_txt(p2p->state));
 
+	if (p2p->pending_listen_freq) {
+		/* We have a pending p2p_listen request */
+		p2p_dbg(p2p, "p2p_listen command pending already");
+		return;
+	}
+
 	freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 	if (freq < 0) {
 		p2p_dbg(p2p, "Unknown regulatory class/channel");
@@ -260,14 +266,14 @@ static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 		return;
 	}
 
-	p2p->pending_listen_freq = freq;
-	p2p->pending_listen_sec = 0;
-	p2p->pending_listen_usec = 1024 * tu;
-
 	ies = p2p_build_probe_resp_ies(p2p);
 	if (ies == NULL)
 		return;
 
+	p2p->pending_listen_freq = freq;
+	p2p->pending_listen_sec = 0;
+	p2p->pending_listen_usec = 1024 * tu;
+
 	if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 		    ies) < 0) {
 		p2p_dbg(p2p, "Failed to start listen mode");
@@ -284,13 +290,18 @@ int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 
 	p2p_dbg(p2p, "Going to listen(only) state");
 
+	if (p2p->pending_listen_freq) {
+		/* We have a pending p2p_listen request */
+		p2p_dbg(p2p, "p2p_listen command pending already");
+		return -1;
+	}
+
 	freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 	if (freq < 0) {
 		p2p_dbg(p2p, "Unknown regulatory class/channel");
 		return -1;
 	}
 
-	p2p->pending_listen_freq = freq;
 	p2p->pending_listen_sec = timeout / 1000;
 	p2p->pending_listen_usec = (timeout % 1000) * 1000;
 
@@ -308,6 +319,8 @@ int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 	if (ies == NULL)
 		return -1;
 
+	p2p->pending_listen_freq = freq;
+
 	if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 		p2p_dbg(p2p, "Failed to start listen mode");
 		p2p->pending_listen_freq = 0;
@@ -1116,6 +1129,7 @@ void p2p_stop_listen(struct p2p_data *p2p)
 
 void p2p_stop_find(struct p2p_data *p2p)
 {
+	p2p->pending_listen_freq = 0;
 	p2p_stop_find_for_freq(p2p, 0);
 }