Update hw mode after ACS selects the channel

hostapd based automatic channel selection doesn't update the hardware
mode after the channel is selected. This change specifically helps
channel 14 which can operate only in IEEE 802.11b mode.

Signed-off-by: Sunil Ravi <sunilravi@google.com>

diff --git a/src/ap/acs.c b/src/ap/acs.c
index d06e55f5d5eaae48735e98ccfdb37624d12968d1..8ee2e04a2c35c3ffc32649158bd996d7c41caba1 100644 (file)
--- a/src/ap/acs.c
+++ b/src/ap/acs.c
@@ -1007,6 +1007,15 @@ static void acs_study(struct hostapd_iface *iface)
        if (iface->conf->ieee80211ac || iface->conf->ieee80211ax)
                acs_adjust_center_freq(iface);
 
+       err = hostapd_select_hw_mode(iface);
+       if (err) {
+               wpa_printf(MSG_ERROR,
+                          "ACS: Could not (err: %d) select hw_mode for freq=%d channel=%d",
+                       err, iface->freq, iface->conf->channel);
+               err = -1;
+               goto fail;
+       }
+
        err = 0;
 fail:
        /*