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authorBen Greear <greearb@candelatech.com>2011-02-07 13:44:38 -0800
committerJohn W. Linville <linville@tuxdriver.com>2011-02-09 16:09:48 -0500
commit59bdf3b0fe7a183f18ce94696259c4c76abb4568 (patch)
treef78a9a59703b0e68156f2fce509b7c9e3a80ae70 /net/mac80211/scan.c
parent603b3eefb92e0886ed4dd5f73d4c07b304405b40 (diff)
mac80211: Ensure power-level set properly for scanning.
My previous patch to optimize scanning on operating channel accidentally removed the code that would ensure power was set to maximum for scanning. This patch re-adds that functionality. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/scan.c')
-rw-r--r--net/mac80211/scan.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 0e70d7a160b..84295450992 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -307,11 +307,15 @@ static void __ieee80211_scan_completed_finish(struct ieee80211_hw *hw,
mutex_lock(&local->mtx);
on_oper_chan = ieee80211_cfg_on_oper_channel(local);
+ WARN_ON(local->scanning & (SCAN_SW_SCANNING | SCAN_HW_SCANNING));
+
if (was_hw_scan || !on_oper_chan) {
if (WARN_ON(local->scan_channel))
local->scan_channel = NULL;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
- }
+ } else
+ /* Set power back to normal operating levels. */
+ ieee80211_hw_config(local, 0);
if (!was_hw_scan) {
bool on_oper_chan2;
@@ -377,6 +381,9 @@ static int ieee80211_start_sw_scan(struct ieee80211_local *local)
ieee80211_configure_filter(local);
+ /* We need to set power level at maximum rate for scanning. */
+ ieee80211_hw_config(local, 0);
+
ieee80211_queue_delayed_work(&local->hw,
&local->scan_work,
IEEE80211_CHANNEL_TIME);