package/kernel/mac80211/patches/brcm/104-v5.4-0005-brcmfmac-avoid-firmware-commands-when-bus-is-down.patch

   1 From 66ab63fbb33bf367807e3e471231379dce6f8b8c Mon Sep 17 00:00:00 2001
   2 From: Arend van Spriel <arend.vanspriel@broadcom.com>
   3 Date: Thu, 11 Jul 2019 11:05:10 +0200
   4 Subject: [PATCH 5/7] brcmfmac: avoid firmware commands when bus is down
   5
   6 Upon rmmod a few attempts are made to inform firmware, but there is
   7 no point as the bus is down and these will fail. Avoid them to keep
   8 the logs clean.
   9
  10 Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
  11 Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
  12 Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
  13 Reviewed-by: Franky Lin <franky.lin@broadcom.com>
  14 Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  15 ---
  16  .../broadcom/brcm80211/brcmfmac/cfg80211.c    | 23 +++++++++++--------
  17  1 file changed, 13 insertions(+), 10 deletions(-)
  18
  19 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
  20 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
  21 @@ -1286,17 +1286,21 @@ static void brcmf_link_down(struct brcmf
  22  {
  23         struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(vif->wdev.wiphy);
  24         struct brcmf_pub *drvr = cfg->pub;
  25 +       bool bus_up = drvr->bus_if->state == BRCMF_BUS_UP;
  26         s32 err = 0;
  27
  28         brcmf_dbg(TRACE, "Enter\n");
  29
  30         if (test_and_clear_bit(BRCMF_VIF_STATUS_CONNECTED, &vif->sme_state)) {
  31 -               brcmf_dbg(INFO, "Call WLC_DISASSOC to stop excess roaming\n");
  32 -               err = brcmf_fil_cmd_data_set(vif->ifp,
  33 -                                            BRCMF_C_DISASSOC, NULL, 0);
  34 -               if (err) {
  35 -                       bphy_err(drvr, "WLC_DISASSOC failed (%d)\n", err);
  36 +               if (bus_up) {
  37 +                       brcmf_dbg(INFO, "Call WLC_DISASSOC to stop excess roaming\n");
  38 +                       err = brcmf_fil_cmd_data_set(vif->ifp,
  39 +                                                    BRCMF_C_DISASSOC, NULL, 0);
  40 +                       if (err)
  41 +                               bphy_err(drvr, "WLC_DISASSOC failed (%d)\n",
  42 +                                        err);
  43                 }
  44 +
  45                 if ((vif->wdev.iftype == NL80211_IFTYPE_STATION) ||
  46                     (vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT))
  47                         cfg80211_disconnected(vif->wdev.netdev, reason, NULL, 0,
  48 @@ -1306,7 +1310,8 @@ static void brcmf_link_down(struct brcmf
  49         clear_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status);
  50         brcmf_btcoex_set_mode(vif, BRCMF_BTCOEX_ENABLED, 0);
  51         if (vif->profile.use_fwsup != BRCMF_PROFILE_FWSUP_NONE) {
  52 -               brcmf_set_pmk(vif->ifp, NULL, 0);
  53 +               if (bus_up)
  54 +                       brcmf_set_pmk(vif->ifp, NULL, 0);
  55                 vif->profile.use_fwsup = BRCMF_PROFILE_FWSUP_NONE;
  56         }
  57         brcmf_dbg(TRACE, "Exit\n");
  58 @@ -5004,18 +5009,16 @@ static int brcmf_cfg80211_get_channel(st
  59         struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
  60         struct net_device *ndev = wdev->netdev;
  61         struct brcmf_pub *drvr = cfg->pub;
  62 -       struct brcmf_if *ifp;
  63         struct brcmu_chan ch;
  64         enum nl80211_band band = 0;
  65         enum nl80211_chan_width width = 0;
  66         u32 chanspec;
  67         int freq, err;
  68
  69 -       if (!ndev)
  70 +       if (!ndev || drvr->bus_if->state != BRCMF_BUS_UP)
  71                 return -ENODEV;
  72 -       ifp = netdev_priv(ndev);
  73
  74 -       err = brcmf_fil_iovar_int_get(ifp, "chanspec", &chanspec);
  75 +       err = brcmf_fil_iovar_int_get(netdev_priv(ndev), "chanspec", &chanspec);
  76         if (err) {
  77                 bphy_err(drvr, "chanspec failed (%d)\n", err);
  78                 return err;