package/kernel/mac80211/patches/brcm/104-v5.4-0006-brcmfmac-simply-remove-flowring-if-bus-is-down.patch

   1 From e0bfb9601d4812719167cc4124a0d6db1e2f55e4 Mon Sep 17 00:00:00 2001
   2 From: Arend van Spriel <arend.vanspriel@broadcom.com>
   3 Date: Thu, 11 Jul 2019 11:05:11 +0200
   4 Subject: [PATCH] brcmfmac: simply remove flowring if bus is down
   5
   6 When the bus is down, eg. due to rmmod, there is no need to
   7 attempt to inform firmware about it.
   8
   9 Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
  10 Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
  11 Reviewed-by: Franky Lin <franky.lin@broadcom.com>
  12 Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  13 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  14 ---
  15  drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c | 7 +++++++
  16  1 file changed, 7 insertions(+)
  17
  18 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
  19 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
  20 @@ -1398,6 +1398,13 @@ void brcmf_msgbuf_delete_flowring(struct
  21         u8 ifidx;
  22         int err;
  23
  24 +       /* no need to submit if firmware can not be reached */
  25 +       if (drvr->bus_if->state != BRCMF_BUS_UP) {
  26 +               brcmf_dbg(MSGBUF, "bus down, flowring will be removed\n");
  27 +               brcmf_msgbuf_remove_flowring(msgbuf, flowid);
  28 +               return;
  29 +       }
  30 +
  31         commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
  32         brcmf_commonring_lock(commonring);
  33         ret_ptr = brcmf_commonring_reserve_for_write(commonring);