diff options
| author | Luca Coelho <luciano.coelho@intel.com> | 2016-02-02 15:11:15 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-03 15:07:32 -0800 |
| commit | 74e579764007b3ef63d791116c7d252e0032cc1e (patch) | |
| tree | 9286dd15c3d663c06e4447415749d500d54947a4 /drivers/net/wireless/iwlwifi | |
| parent | 3beb469074ec66079f3fcbed1c6cf06ca8bbc873 (diff) | |
iwlwifi: mvm: don't allow sched scans without matches to be started
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 <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/wireless/iwlwifi')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/scan.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/scan.c b/drivers/net/wireless/iwlwifi/mvm/scan.c index d6e0c1b5c20c..8215d7405f64 100644 --- 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_mvm *mvm, 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; |