libertas: get the right # of scanned BSSes

Let's actually check the right field in the command response; and
if there aren't any reported BSSes, exit early with success.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/net/wireless/libertas/cfg.c b/drivers/net/wireless/libertas/cfg.c
index 25f902760980..b60f66115061 100644
--- a/drivers/net/wireless/libertas/cfg.c
+++ b/drivers/net/wireless/libertas/cfg.c
@@ -465,7 +465,15 @@ static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
         lbs_deb_enter(LBS_DEB_CFG80211);
 
         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
-        nr_sets = le16_to_cpu(resp->size);
+        nr_sets = le16_to_cpu(scanresp->nr_sets);
+
+        lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
+                        nr_sets, bsssize, le16_to_cpu(resp->size));
+
+        if (nr_sets == 0) {
+                ret = 0;
+                goto done;
+        }
 
         /*
          * The general layout of the scan response is described in chapter