Commit 74e57976 authored by Luca Coelho's avatar Luca Coelho Committed by Greg Kroah-Hartman

iwlwifi: mvm: don't allow sched scans without matches to be started

commit 5e56276e 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=110831Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
Signed-off-by: default avatarEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 3beb4690
...@@ -1267,6 +1267,10 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, ...@@ -1267,6 +1267,10 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
return -EBUSY; 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); ret = iwl_mvm_check_running_scans(mvm, type);
if (ret) if (ret)
return ret; return ret;
......
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