[PATCH 3.14 033/228] cfg80211: add cfg80211_sched_scan_stopped_rtnl

Greg Kroah-Hartman
2014-06-05T00:48:48Z

From: Eliad Peller <eliad@wizery.com>

commit 792e6aa7a15ea0fb16f8687e93caede1ea9118c7 upstream.

Add locked-version for cfg80211_sched_scan_stopped.
This is used for some users that might want to
call it when rtnl is already locked.

Fixes: d43c6b6 ("mac80211: reschedule sched scan after HW restart")
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
include/net/cfg80211.h | 12 ++++++++++++
net/wireless/scan.c | 12 ++++++++++--
2 files changed, 22 insertions(+), 2 deletions(-)

--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -3637,6 +3637,18 @@ void cfg80211_sched_scan_results(struct
void cfg80211_sched_scan_stopped(struct wiphy *wiphy);

/**
+ * cfg80211_sched_scan_stopped_rtnl - notify that the scheduled scan has stopped
+ *
+ * @wiphy: the wiphy on which the scheduled scan stopped
+ *
+ * The driver can call this function to inform cfg80211 that the
+ * scheduled scan had to be stopped, for whatever reason. The driver
+ * is then called back via the sched_scan_stop operation when done.
+ * This function should be called with rtnl locked.
+ */
+void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy);
+
+/**
* cfg80211_inform_bss_width_frame - inform cfg80211 of a received BSS frame
*
* @wiphy: the wiphy reporting the BSS
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -284,14 +284,22 @@ void cfg80211_sched_scan_results(struct
}
EXPORT_SYMBOL(cfg80211_sched_scan_results);

-void cfg80211_sched_scan_stopped(struct wiphy *wiphy)
+void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy)
{
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);

+ ASSERT_RTNL();
+
trace_cfg80211_sched_scan_stopped(wiphy);

- rtnl_lock();
__cfg80211_stop_sched_scan(rdev, true);
+}
+EXPORT_SYMBOL(cfg80211_sched_scan_stopped_rtnl);
+
+void cfg80211_sched_scan_stopped(struct wiphy *wiphy)
+{
+ rtnl_lock();
+ cfg80211_sched_scan_stopped_rtnl(wiphy);
rtnl_unlock();
}
EXPORT_SYMBOL(cfg80211_sched_scan_stopped);