brcm80211: smac: always set channel specified by mac80211

In some situations brcmsmac is choosing a channel internally. This makes
it difficult at times to know what channel to use for enforcing
regulatory constraints, so instead always use the channel from the
mac80211 configuration.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c
index 19db405..93c865d 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmsmac/main.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c
@@ -3139,20 +3139,6 @@ void brcms_c_reset(struct brcms_c_info *wlc)
        brcms_b_reset(wlc->hw);
 }
 
-/* Return the channel the driver should initialize during brcms_c_init.
- * the channel may have to be changed from the currently configured channel
- * if other configurations are in conflict (bandlocked, 11n mode disabled,
- * invalid channel for current country, etc.)
- */
-static u16 brcms_c_init_chanspec(struct brcms_c_info *wlc)
-{
-       u16 chanspec =
-           1 | WL_CHANSPEC_BW_20 | WL_CHANSPEC_CTL_SB_NONE |
-           WL_CHANSPEC_BAND_2G;
-
-       return chanspec;
-}
-
 void brcms_c_init_scb(struct scb *scb)
 {
        int i;
@@ -5129,6 +5115,8 @@ static void brcms_c_wme_retries_write(struct brcms_c_info *wlc)
 /* make interface operational */
 int brcms_c_up(struct brcms_c_info *wlc)
 {
+       struct ieee80211_channel *ch;
+
        BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
 
        /* HW is turned off so don't try to access it */
@@ -5195,8 +5183,9 @@ int brcms_c_up(struct brcms_c_info *wlc)
        wlc->pub->up = true;
 
        if (wlc->bandinit_pending) {
+               ch = wlc->pub->ieee_hw->conf.channel;
                brcms_c_suspend_mac_and_wait(wlc);
-               brcms_c_set_chanspec(wlc, wlc->default_bss->chanspec);
+               brcms_c_set_chanspec(wlc, ch20mhz_chspec(ch->hw_value));
                wlc->bandinit_pending = false;
                brcms_c_enable_mac(wlc);
        }
@@ -8201,19 +8190,12 @@ bool brcms_c_dpc(struct brcms_c_info *wlc, bool bounded)
 void brcms_c_init(struct brcms_c_info *wlc, bool mute_tx)
 {
        struct bcma_device *core = wlc->hw->d11core;
+       struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.channel;
        u16 chanspec;
 
        BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
 
-       /*
-        * This will happen if a big-hammer was executed. In
-        * that case, we want to go back to the channel that
-        * we were on and not new channel
-        */
-       if (wlc->pub->associated)
-               chanspec = wlc->home_chanspec;
-       else
-               chanspec = brcms_c_init_chanspec(wlc);
+       chanspec = ch20mhz_chspec(ch->hw_value);
 
        brcms_b_init(wlc->hw, chanspec);