iwlwifi: mvm: trim sched scan delay down to 16-bit for LMAC as well

In theory, LMAC scans can handle a 32-bit delay, but since waiting for
over 18 hours to start the scan is a bit silly and to keep it aligned
with UMAC scans (which only support 16-bit delays), trim it down to
16-bits.

This makes the LMAC vs. UMAC and the UMAC reg scan vs. UMAC sched scan
code more similar.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/mvm/scan.c b/drivers/net/wireless/iwlwifi/mvm/scan.c
index f4d38f5..1abbc66 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/iwlwifi/mvm/scan.c
@@ -80,7 +80,7 @@ struct iwl_mvm_scan_params {
        u32 suspend_time;
        bool passive_fragmented;
        u32 n_channels;
-       u32 delay;
+       u16 delay;
        int n_ssids;
        struct cfg80211_ssid *ssids;
        struct ieee80211_channel **channels;
@@ -1279,14 +1279,7 @@ static int iwl_mvm_sched_scan_umac(struct iwl_mvm *mvm,
        /* With UMAC we use only one schedule, so take the final one only */
        sec_part->schedule[0].iter_count = params->schedule[1].iterations;
 
-       if (params->delay > U16_MAX) {
-               IWL_DEBUG_SCAN(mvm,
-                              "delay value is > 16-bits, set to max possible\n");
-               sec_part->delay = cpu_to_le16(U16_MAX);
-       } else {
-               sec_part->delay = cpu_to_le16(params->delay);
-       }
-
+       sec_part->delay = cpu_to_le16(params->delay);
        sec_part->preq = params->preq;
 
        return 0;
@@ -1458,7 +1451,6 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
        params.n_ssids = req->n_ssids;
        params.flags = req->flags;
        params.n_channels = req->n_channels;
-       params.delay = req->delay;
        params.ssids = req->ssids;
        params.channels = req->channels;
        params.mac_addr = req->mac_addr;
@@ -1481,6 +1473,19 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
                params.interval = req->interval / MSEC_PER_SEC;
        }
 
+       /* In theory, LMAC scans can handle a 32-bit delay, but since
+        * waiting for over 18 hours to start the scan is a bit silly
+        * and to keep it aligned with UMAC scans (which only support
+        * 16-bit delays), trim it down to 16-bits.
+        */
+       if (req->delay > U16_MAX) {
+               IWL_DEBUG_SCAN(mvm,
+                              "delay value is > 16-bits, set to max possible\n");
+               params.delay = U16_MAX;
+       } else {
+               params.delay = req->delay;
+       }
+
        iwl_mvm_scan_calc_dwell(mvm, vif, &params);
 
        ret = iwl_mvm_config_sched_scan_profiles(mvm, req);