[PATCH] wifi: do not print dump inconsistency error for get scan command

[Stanislaw Gruszka <sgruszka redhat com>]

Avoid printing "nl_recvmsgs() error: (-33) Dump inconsistency detected,
interrupted".  DUMP_INTR error is harmless for scan (see in code
comments).

---
 src/wifi/wifi-utils-nl80211.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/wifi/wifi-utils-nl80211.c b/src/wifi/wifi-utils-nl80211.c
index e0d7eee..f6bbc6e 100644
--- a/src/wifi/wifi-utils-nl80211.c
+++ b/src/wifi/wifi-utils-nl80211.c
@@ -132,6 +132,15 @@ _nl80211_send_and_recv (struct nl_sock *nl_sock,
        while (!done) {
                err = nl_recvmsgs (nl_sock, cb);
                if (err && err != -NLE_AGAIN) {
+                       /* Kernel scan list can change while we are dumping it, as new scan
+                        * results from H/W can arrive. BSS info is assured to be consistent
+                        * and we don't need consistent view of whole scan list. Hence do
+                        * not warn on DUMP_INTR error for get scan command.
+                        */
+                       if (err == -NLE_DUMP_INTR &&
+                           genlmsg_hdr(nlmsg_hdr(msg))->cmd == NL80211_CMD_GET_SCAN)
+                               break;
+
                        nm_log_warn (LOGD_WIFI, "nl_recvmsgs() error: (%d) %s",
                                     err, nl_geterror (err));
                        break;
-- 
1.8.4.2