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authorDmitry Shmidt <dimitrysh@google.com>2011-12-19 12:32:21 -0800
committerJohn W. Linville <linville@tuxdriver.com>2012-01-04 14:30:39 -0500
commitcee0bec58a922976a5f4d70081a3b2fd73e108e9 (patch)
tree8eab2a655bfb1f210e2e9682ded92a54d35b426c /net
parentb423db5b356749e3e39faad607d387cd4c1a9d30 (diff)
wireless: Protect regdomain change by mutex
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
-rw-r--r--net/wireless/reg.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index c45c8b772ddd..58d393766035 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -1830,6 +1830,7 @@ static void restore_custom_reg_settings(struct wiphy *wiphy)
static void restore_regulatory_settings(bool reset_user)
{
char alpha2[2];
+ char world_alpha2[2];
struct reg_beacon *reg_beacon, *btmp;
struct regulatory_request *reg_request, *tmp;
LIST_HEAD(tmp_reg_req_list);
@@ -1881,6 +1882,8 @@ static void restore_regulatory_settings(bool reset_user)
/* First restore to the basic regulatory settings */
cfg80211_regdomain = cfg80211_world_regdom;
+ world_alpha2[0] = cfg80211_regdomain->alpha2[0];
+ world_alpha2[1] = cfg80211_regdomain->alpha2[1];
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
if (rdev->wiphy.flags & WIPHY_FLAG_CUSTOM_REGULATORY)
@@ -1890,7 +1893,7 @@ static void restore_regulatory_settings(bool reset_user)
mutex_unlock(&reg_mutex);
mutex_unlock(&cfg80211_mutex);
- regulatory_hint_core(cfg80211_regdomain->alpha2);
+ regulatory_hint_core(world_alpha2);
/*
* This restores the ieee80211_regdom module parameter