releases/4.9.162/cfg80211-extend-range-deviation-for-dmg.patch

   1 From 33e44e428d05e81651bda47a8bbc4b17758ac152 Mon Sep 17 00:00:00 2001
   2 From: Chaitanya Tata <chaitanya.tata@bluwirelesstechnology.com>
   3 Date: Sat, 19 Jan 2019 03:17:47 +0530
   4 Subject: cfg80211: extend range deviation for DMG
   5
   6 [ Upstream commit 93183bdbe73bbdd03e9566c8dc37c9d06b0d0db6 ]
   7
   8 Recently, DMG frequency bands have been extended till 71GHz, so extend
   9 the range check till 20GHz (45-71GHZ), else some channels will be marked
  10 as disabled.
  11
  12 Signed-off-by: Chaitanya Tata <Chaitanya.Tata@bluwireless.co.uk>
  13 Signed-off-by: Johannes Berg <johannes.berg@intel.com>
  14 Signed-off-by: Sasha Levin <sashal@kernel.org>
  15 ---
  16  net/wireless/reg.c | 4 ++--
  17  1 file changed, 2 insertions(+), 2 deletions(-)
  18
  19 diff --git a/net/wireless/reg.c b/net/wireless/reg.c
  20 index 36d1d25082e32..7c19d0d2549b1 100644
  21 --- a/net/wireless/reg.c
  22 +++ b/net/wireless/reg.c
  23 @@ -773,7 +773,7 @@ static bool reg_does_bw_fit(const struct ieee80211_freq_range *freq_range,
  24   * definitions (the "2.4 GHz band", the "5 GHz band" and the "60GHz band"),
  25   * however it is safe for now to assume that a frequency rule should not be
  26   * part of a frequency's band if the start freq or end freq are off by more
  27 - * than 2 GHz for the 2.4 and 5 GHz bands, and by more than 10 GHz for the
  28 + * than 2 GHz for the 2.4 and 5 GHz bands, and by more than 20 GHz for the
  29   * 60 GHz band.
  30   * This resolution can be lowered and should be considered as we add
  31   * regulatory rule support for other "bands".
  32 @@ -788,7 +788,7 @@ static bool freq_in_rule_band(const struct ieee80211_freq_range *freq_range,
  33          * with the Channel starting frequency above 45 GHz.
  34          */
  35         u32 limit = freq_khz > 45 * ONE_GHZ_IN_KHZ ?
  36 -                       10 * ONE_GHZ_IN_KHZ : 2 * ONE_GHZ_IN_KHZ;
  37 +                       20 * ONE_GHZ_IN_KHZ : 2 * ONE_GHZ_IN_KHZ;
  38         if (abs(freq_khz - freq_range->start_freq_khz) <= limit)
  39                 return true;
  40         if (abs(freq_khz - freq_range->end_freq_khz) <= limit)
  41 --
  42 2.19.1
  43