[PATCH 5.4 254/320] iwlwifi: mvm: Increase the scan timeout guard to 30 seconds

Greg Kroah-Hartman
2022-01-24T20:17:51Z

From: Ilan Peer <ilan.peer@intel.com>

commit ced50f1133af12f7521bb777fcf4046ca908fb77 upstream.

With the introduction of 6GHz channels the scan guard timeout should
be adjusted to account for the following extreme case:

- All 6GHz channels are scanned passively: 58 channels.
- The scan is fragmented with the following parameters: 3 fragments,
95 TUs suspend time, 44 TUs maximal out of channel time.

The above would result with scan time of more than 24 seconds. Thus,
set the timeout to 30 seconds.

Cc: stable@vger.kernel.org
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211210090244.3c851b93aef5.I346fa2e1d79220a6770496e773c6f87a2ad9e6c4@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/intel/iwlwifi/mvm/scan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -1700,7 +1700,7 @@ static int iwl_mvm_check_running_scans(s
return -EIO;
}

-#define SCAN_TIMEOUT 20000
+#define SCAN_TIMEOUT 30000

void iwl_mvm_scan_timeout_wk(struct work_struct *work)
{