From a8aaaf53d5f22f7f60ca5af26fc85c2940575c37 Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Tue, 11 Jan 2011 18:25:18 +0100 Subject: [PATCH] wl12xx: don't modify the global supported band structures When 11a is not supported, we were modifying the global structure that contains the bands supported by the driver. This causes problems when having more one wl12xx device in the same system because they all use the same global. This also causes problems when the wl12xx_sdio module is removed and the wl12xx module remains. Fix this problem by copying the band structure into the wl12xx instance. Reported-by: Arik Nemtsov Reported-by: Johannes Berg Signed-off-by: Luciano Coelho --- drivers/net/wireless/wl12xx/main.c | 16 ++++++++++++++-- drivers/net/wireless/wl12xx/wl12xx.h | 3 +++ 2 files changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c index a3529f56a3d6..588e10ee282c 100644 --- a/drivers/net/wireless/wl12xx/main.c +++ b/drivers/net/wireless/wl12xx/main.c @@ -3150,8 +3150,20 @@ int wl1271_init_ieee80211(struct wl1271 *wl) */ wl->hw->wiphy->max_scan_ie_len = WL1271_CMD_TEMPL_MAX_SIZE - sizeof(struct ieee80211_header); - wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz; - wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wl1271_band_5ghz; + + /* + * We keep local copies of the band structs because we need to + * modify them on a per-device basis. + */ + memcpy(&wl->bands[IEEE80211_BAND_2GHZ], &wl1271_band_2ghz, + sizeof(wl1271_band_2ghz)); + memcpy(&wl->bands[IEEE80211_BAND_5GHZ], &wl1271_band_5ghz, + sizeof(wl1271_band_5ghz)); + + wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = + &wl->bands[IEEE80211_BAND_2GHZ]; + wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = + &wl->bands[IEEE80211_BAND_5GHZ]; wl->hw->queues = 4; wl->hw->max_rates = 1; diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h index f153e4b81c0d..ca727e0c4ce9 100644 --- a/drivers/net/wireless/wl12xx/wl12xx.h +++ b/drivers/net/wireless/wl12xx/wl12xx.h @@ -457,6 +457,9 @@ struct wl1271 { /* recoreded keys for AP-mode - set here before AP startup */ struct wl1271_ap_key *recorded_ap_keys[MAX_NUM_KEYS]; + + /* bands supported by this instance of wl12xx */ + struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS]; }; struct wl1271_station { -- 2.20.1