iwlwifi: mvm: don't allow sched scans without matches to be started
authorLuca Coelho <luciano.coelho@intel.com>
Tue, 2 Feb 2016 13:11:15 +0000 (15:11 +0200)
committerEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Mon, 15 Feb 2016 06:49:10 +0000 (08:49 +0200)
commit5e56276e7555b34550d51459a801ff75eca8b907
treef9b8c1d14fb4d93bd19344227f4ba8d90d5cab1b
parent0ad4ece5bbd4d2104564c7dbd477ae0c729d4fcc
iwlwifi: mvm: don't allow sched scans without matches to be started

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

Cc: <stable@vger.kernel.org> [3.17+]
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
drivers/net/wireless/intel/iwlwifi/mvm/scan.c