From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail333.us4.mandrillapp.com ([205.201.137.77]:38301 "EHLO mail333.us4.mandrillapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751103AbcCAXiw (ORCPT ); Tue, 1 Mar 2016 18:38:52 -0500 Received: from pmta03.dal05.mailchimp.com (127.0.0.1) by mail333.us4.mandrillapp.com id hqok0o174noi for ; Tue, 1 Mar 2016 23:38:50 +0000 (envelope-from ) From: Subject: Patch "iwlwifi: mvm: don't allow sched scans without matches to be started" has been added to the 4.4-stable tree To: , , Cc: , Message-Id: <1456875529249207@kroah.com> Date: Tue, 01 Mar 2016 23:38:51 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled iwlwifi: mvm: don't allow sched scans without matches to be started to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: iwlwifi-mvm-don-t-allow-sched-scans-without-matches-to-be-started.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 5e56276e7555b34550d51459a801ff75eca8b907 Mon Sep 17 00:00:00 2001 From: Luca Coelho Date: Tue, 2 Feb 2016 15:11:15 +0200 Subject: iwlwifi: mvm: don't allow sched scans without matches to be started From: Luca Coelho commit 5e56276e7555b34550d51459a801ff75eca8b907 upstream. The firmware can perform a scheduled scan with not matchsets passed, but it can't send notification that results were found. Since the userspace then cannot know when we got new results and the firmware wouldn't trigger a wake in case we are sleeping, it's better not to allow scans without matchsets. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=110831 Signed-off-by: Luca Coelho Signed-off-by: Emmanuel Grumbach Signed-off-by: Greg Kroah-Hartman --- drivers/net/wireless/iwlwifi/mvm/scan.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/net/wireless/iwlwifi/mvm/scan.c +++ b/drivers/net/wireless/iwlwifi/mvm/scan.c @@ -1267,6 +1267,10 @@ int iwl_mvm_sched_scan_start(struct iwl_ return -EBUSY; } + /* we don't support "match all" in the firmware */ + if (!req->n_match_sets) + return -EOPNOTSUPP; + ret = iwl_mvm_check_running_scans(mvm, type); if (ret) return ret; Patches currently in stable-queue which might be from luciano.coelho@intel.com are queue-4.4/iwlwifi-mvm-don-t-allow-sched-scans-without-matches-to-be-started.patch