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.coe...@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumb...@intel.com> Signed-off-by: Wu Zheng <wu.zh...@intel.com> --- drivers/net/wireless/iwlwifi/mvm/scan.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/mvm/scan.c b/drivers/net/wireless/iwlwifi/mvm/scan.c index d6e0c1b..8215d74 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; -- 2.1.4 -- _______________________________________________ linux-yocto mailing list linux-yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/linux-yocto
