iwlwifi: mvm: set max_out_time equal to frag_passive_dwell in fragmented scan

Fragmented scan should be applied for all channels, passive and active.
When scanning on passive channels the firmware uses frag_passive_dwell
to define the maximum continuous scan time before returning to the
operating channel. On active channels max_out_time is the parameter
used by the firmware to define the maximum time allowed out of the
operating channel. Since active channels' scan should also be fragmented
set max_out_time equal to frag_passive_dwell.
In addition:
- Set max_out_time and suspend_time if the firmware doesn't support
  fragmented scan to avoid unexpected behavior.
- Adjust max_out_time for second level of scan precedence.

Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Reviewed-by: Alexander Bondar <alexander.bondar@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

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

@@ -309,18 +309,18 @@ static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm,
 		goto not_bound;
 
 	params->suspend_time = 30;
-	params->max_out_time = 170;
+	params->max_out_time = 120;
 
 	if (iwl_mvm_low_latency(mvm)) {
 		if (mvm->fw->ucode_capa.api[0] &
 		    IWL_UCODE_TLV_API_FRAGMENTED_SCAN) {
 			params->suspend_time = 105;
-			params->max_out_time = 70;
 			/*
 			 * If there is more than one active interface make
 			 * passive scan more fragmented.
 			 */
 			frag_passive_dwell = (global_cnt < 2) ? 40 : 20;
+			params->max_out_time = frag_passive_dwell;
 		} else {
 			params->suspend_time = 120;
 			params->max_out_time = 120;