iwlwifi: mvm: perform 6GHz passive scan after suspend

The 6GHz passive scan is performed only once every 50 minutes.
However, in case of suspend/resume, the regulatory information
is reset, so 6GHz channels may become disabled.
Fix it by performing a 6GHz passive scan within 60 seconds after
suspend/resume even if the 50 minutes timeout did not expire yet.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Fixes: e8fe3b41 ("iwlwifi: mvm: Add support for 6GHz passive scan")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211219121514.6d5c043372cf.I251dd5618a3f0b8febbcca788eb861f1cd6039bc@changeidSigned-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/scan.c

@@ -1925,22 +1925,19 @@ static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm,
 	}
 
 	/*
-	 * 6GHz passive scan is allowed while associated in a defined time
-	 * interval following HW reset or resume flow
+	 * 6GHz passive scan is allowed in a defined time interval following HW
+	 * reset or resume flow, or while not associated and a large interval
+	 * has passed since the last 6GHz passive scan.
 	 */
-	if (vif->bss_conf.assoc &&
+	if ((vif->bss_conf.assoc ||
+	     time_after(mvm->last_6ghz_passive_scan_jiffies +
+			(IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) &&
 	    (time_before(mvm->last_reset_or_resume_time_jiffies +
 			 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ),
 			 jiffies))) {
-		IWL_DEBUG_SCAN(mvm, "6GHz passive scan: associated\n");
-		return;
-	}
-
-	/* No need for 6GHz passive scan if not enough time elapsed */
-	if (time_after(mvm->last_6ghz_passive_scan_jiffies +
-		       (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) {
-		IWL_DEBUG_SCAN(mvm,
-			       "6GHz passive scan: timeout did not expire\n");
+		IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n",
+			       vif->bss_conf.assoc ? "associated" :
+			       "timeout did not expire");
 		return;
 	}