hostapd: add back the patch that waits for interface bringup in ht40, it got lost with the update

SVN-Revision: 35619

package/network/services/hostapd/patches/620-scan_wait.patch

@@ -0,0 +1,73 @@
+--- a/hostapd/main.c
++++ b/hostapd/main.c
+@@ -32,6 +32,8 @@
+ extern int wpa_debug_level;
+ extern int wpa_debug_show_keys;
+ extern int wpa_debug_timestamp;
++static int daemonize = 0;
++static char *pid_file = NULL;
+ 
+ extern struct wpa_driver_ops *wpa_drivers[];
+ 
+@@ -279,6 +281,14 @@ static int hostapd_driver_init(struct ho
+ 	return 0;
+ }
+ 
++static void hostapd_setup_complete_cb(void *ctx)
++{
++	if (daemonize && os_daemonize(pid_file)) {
++		perror("daemon");
++		return;
++	}
++	daemonize = 0;
++}
+ 
+ static struct hostapd_iface *
+ hostapd_interface_init(struct hapd_interfaces *interfaces,
+@@ -298,6 +308,7 @@ hostapd_interface_init(struct hapd_inter
+ 			iface->bss[0]->conf->logger_stdout_level--;
+ 	}
+ 
++	iface->bss[0]->setup_complete_cb = hostapd_setup_complete_cb;
+ 	if (iface->conf->bss[0].iface[0] != 0 ||
+ 	    hostapd_drv_none(iface->bss[0])) {
+ 		if (hostapd_driver_init(iface) ||
+@@ -310,7 +321,6 @@ hostapd_interface_init(struct hapd_inter
+ 	return iface;
+ }
+ 
+-
+ /**
+  * handle_term - SIGINT and SIGTERM handler to terminate hostapd process
+  */
+@@ -425,8 +435,6 @@ static void hostapd_global_deinit(const 
+ #endif /* CONFIG_NATIVE_WINDOWS */
+ 
+ 	eap_server_unregister_methods();
+-
+-	os_daemonize_terminate(pid_file);
+ }
+ 
+ 
+@@ -452,11 +460,6 @@ static int hostapd_global_run(struct hap
+ 	}
+ #endif /* EAP_SERVER_TNC */
+ 
+-	if (daemonize && os_daemonize(pid_file)) {
+-		perror("daemon");
+-		return -1;
+-	}
+-
+ 	eloop_run();
+ 
+ 	return 0;
+@@ -540,8 +543,7 @@ int main(int argc, char *argv[])
+ 	struct hapd_interfaces interfaces;
+ 	int ret = 1;
+ 	size_t i;
+-	int c, debug = 0, daemonize = 0;
+-	char *pid_file = NULL;
++	int c, debug = 0;
+ 	const char *log_file = NULL;
+ 	const char *entropy_file = NULL;
+