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| author | Johannes Berg <johannes.berg@intel.com> | 2018-02-27 11:22:15 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2018-03-29 11:11:50 +0200 |
| commit | 5bf16a11ba2940c67d0b3a2154813bb42e8c6281 (patch) | |
| tree | ee97c73c151536a071f5917ffa79175d82fb4721 /net/wireless/reg.c | |
| parent | 230ebaa189af44d50dccb4a1846e39ca594e347b (diff) | |
| download | lwn-5bf16a11ba2940c67d0b3a2154813bb42e8c6281.tar.gz lwn-5bf16a11ba2940c67d0b3a2154813bb42e8c6281.zip | |
cfg80211: don't require RTNL held for regdomain reads
The whole code is set up to allow RCU reads of this data, but
then uses rtnl_dereference() which requires the RTNL. Convert
it to rcu_dereference_rtnl() which makes it require only RCU
or the RTNL, to allow RCU-protected reading of the data.
Reviewed-by: Coelho, Luciano <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/reg.c')
| -rw-r--r-- | net/wireless/reg.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c index eddc834f6358..e352a0d1c438 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -135,12 +135,12 @@ static void restore_regulatory_settings(bool reset_user); static const struct ieee80211_regdomain *get_cfg80211_regdom(void) { - return rtnl_dereference(cfg80211_regdomain); + return rcu_dereference_rtnl(cfg80211_regdomain); } const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy) { - return rtnl_dereference(wiphy->regd); + return rcu_dereference_rtnl(wiphy->regd); } static const char *reg_dfs_region_str(enum nl80211_dfs_regions dfs_region) |