brcmfmac: setup wiphy bands after registering it first

During bands setup we disable all channels that firmware doesn't support
in the current regulatory setup. If we do this before wiphy_register
it will result in copying set flags (including IEEE80211_CHAN_DISABLED)
to the orig_flags which is supposed to be persistent. We don't want this
as regulatory change may result in enabling some channels. We shouldn't
mess with orig_flags then (by changing them or ignoring them) so it's
better to just take care of their proper values.

This patch cleanups code a bit (by taking orig_flags more seriously) and
allows further improvements like disabling really unavailable channels.
We will need that e.g. if some frequencies should be disabled for good
due to hardware setup (design).

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index 45ee5b68693976704f91cb81221c6ea2dc2ba3f6..729bf3351feb641f01ca9a49f229d28b02ee52ee 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -6477,8 +6477,7 @@ static int brcmf_setup_wiphy(struct wiphy *wiphy, struct brcmf_if *ifp)
                        wiphy->bands[NL80211_BAND_5GHZ] = band;
                }
        }
-       err = brcmf_setup_wiphybands(wiphy);
-       return err;
+       return 0;
 }
 
 static s32 brcmf_config_dongle(struct brcmf_cfg80211_info *cfg)
@@ -6843,6 +6842,12 @@ struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct brcmf_pub *drvr,
                goto priv_out;
        }
 
+       err = brcmf_setup_wiphybands(wiphy);
+       if (err) {
+               brcmf_err("Setting wiphy bands failed (%d)\n", err);
+               goto wiphy_unreg_out;
+       }
+
        /* If cfg80211 didn't disable 40MHz HT CAP in wiphy_register(),
         * setup 40MHz in 2GHz band and enable OBSS scanning.
         */