Commit a203c2aa authored by Sven Neumann's avatar Sven Neumann Committed by John W. Linville

cfg80211: really ignore the regulatory request

At the beginning of wiphy_update_regulatory() a check is performed
whether the request is to be ignored. Then the request is sent to
the driver nevertheless. This happens even if last_request points
to NULL, leading to a crash in the driver:

 [<bf01d864>] (lbs_set_11d_domain_info+0x28/0x1e4 [libertas]) from [<c03b714c>] (wiphy_update_regulatory+0x4d0/0x4f4)
 [<c03b714c>] (wiphy_update_regulatory+0x4d0/0x4f4) from [<c03b4008>] (wiphy_register+0x354/0x420)
 [<c03b4008>] (wiphy_register+0x354/0x420) from [<bf01b17c>] (lbs_cfg_register+0x80/0x164 [libertas])
 [<bf01b17c>] (lbs_cfg_register+0x80/0x164 [libertas]) from [<bf020e64>] (lbs_start_card+0x20/0x88 [libertas])
 [<bf020e64>] (lbs_start_card+0x20/0x88 [libertas]) from [<bf02cbd8>] (if_sdio_probe+0x898/0x9c0 [libertas_sdio])

Fix this by returning early. Also remove the out: label as it is
not any longer needed.
Signed-off-by: default avatarSven Neumann <s.neumann@raumfeld.com>
Cc: linux-wireless@vger.kernel.org
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Daniel Mack <daniel@zonque.org>
Cc: stable@kernel.org
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 276556db
...@@ -1125,12 +1125,13 @@ void wiphy_update_regulatory(struct wiphy *wiphy, ...@@ -1125,12 +1125,13 @@ void wiphy_update_regulatory(struct wiphy *wiphy,
enum ieee80211_band band; enum ieee80211_band band;
if (ignore_reg_update(wiphy, initiator)) if (ignore_reg_update(wiphy, initiator))
goto out; return;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) { for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
if (wiphy->bands[band]) if (wiphy->bands[band])
handle_band(wiphy, band, initiator); handle_band(wiphy, band, initiator);
} }
out:
reg_process_beacons(wiphy); reg_process_beacons(wiphy);
reg_process_ht_flags(wiphy); reg_process_ht_flags(wiphy);
if (wiphy->reg_notifier) if (wiphy->reg_notifier)
......
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