mac80211: Remove unused 'len' variable

Commit 633e27132625 (mac80211: split sched scan IEs) introduced the
len variable to keep track of the return value of
ieee80211_build_preq_ies() but did not use it. Compiling with W=1
gives the following warning, fix it.

net/mac80211/scan.c: In function ‘__ieee80211_request_sched_scan_start’:
net/mac80211/scan.c:1123:9: warning: variable ‘len’ set but not used [-Wunused-but-set-variable]

This is a harmless warning and is only being fixed to reduce the noise
with W=1 in the kernel.

Fixes: 633e27132625 ("mac80211: split sched scan IEs")
Cc: David Spinadel <david.spinadel@intel.com>
Cc: Alexander Bondar <alexander.bondar@intel.com>
Cc: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kirtika Ruchandani <kirtika@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 23d8ac8292796714df893e32072e44edb3617ca0..faab3c490d2b755f32ee09638eaf0d45067780cd 100644 (file)
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -1120,7 +1120,6 @@ int __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
        u32 rate_masks[NUM_NL80211_BANDS] = {};
        u8 bands_used = 0;
        u8 *ie;
-       size_t len;
 
        iebufsz = local->scan_ies_len + req->ie_len;
 
@@ -1145,10 +1144,9 @@ int __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
 
        ieee80211_prepare_scan_chandef(&chandef, req->scan_width);
 
-       len = ieee80211_build_preq_ies(local, ie, num_bands * iebufsz,
-                                      &sched_scan_ies, req->ie,
-                                      req->ie_len, bands_used,
-                                      rate_masks, &chandef);
+       ieee80211_build_preq_ies(local, ie, num_bands * iebufsz,
+                                &sched_scan_ies, req->ie,
+                                req->ie_len, bands_used, rate_masks, &chandef);
 
        ret = drv_sched_scan_start(local, sdata, req, &sched_scan_ies);
        if (ret == 0) {