package/kernel/mac80211/patches/322-v4.16-0001-brcmfmac-add-possibility-to-obtain-firmware-error.patch

   1 From 933897342d0714ae1c10729cbaeecea0c6178db5 Mon Sep 17 00:00:00 2001
   2 From: Arend Van Spriel <arend.vanspriel@broadcom.com>
   3 Date: Wed, 28 Feb 2018 21:15:19 +0100
   4 Subject: [PATCH] brcmfmac: add possibility to obtain firmware error
   5
   6 The feature module needs to evaluate the actual firmware error return
   7 upon a control command. This adds a flag to struct brcmf_if that the
   8 caller can set. This flag is checked to determine the error code that
   9 needs to be returned.
  10
  11 Fixes: b69c1df47281 ("brcmfmac: separate firmware errors from i/o errors")
  12 Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
  13 Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
  14 Reviewed-by: Franky Lin <franky.lin@broadcom.com>
  15 Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  16 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  17 ---
  18  drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h    |  2 ++
  19  drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c | 10 ++++++++++
  20  drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c    |  3 +++
  21  3 files changed, 15 insertions(+)
  22
  23 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
  24 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
  25 @@ -181,6 +181,7 @@ enum brcmf_netif_stop_reason {
  26   * @netif_stop_lock: spinlock for update netif_stop from multiple sources.
  27   * @pend_8021x_cnt: tracks outstanding number of 802.1x frames.
  28   * @pend_8021x_wait: used for signalling change in count.
  29 + * @fwil_fwerr: flag indicating fwil layer should return firmware error codes.
  30   */
  31  struct brcmf_if {
  32         struct brcmf_pub *drvr;
  33 @@ -198,6 +199,7 @@ struct brcmf_if {
  34         wait_queue_head_t pend_8021x_wait;
  35         struct in6_addr ipv6_addr_tbl[NDOL_MAX_ENTRIES];
  36         u8 ipv6addr_idx;
  37 +       bool fwil_fwerr;
  38  };
  39
  40  int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp);
  41 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c
  42 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c
  43 @@ -104,6 +104,9 @@ static void brcmf_feat_iovar_int_get(str
  44         u32 data;
  45         int err;
  46
  47 +       /* we need to know firmware error */
  48 +       ifp->fwil_fwerr = true;
  49 +
  50         err = brcmf_fil_iovar_int_get(ifp, name, &data);
  51         if (err == 0) {
  52                 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
  53 @@ -112,6 +115,8 @@ static void brcmf_feat_iovar_int_get(str
  54                 brcmf_dbg(TRACE, "%s feature check failed: %d\n",
  55                           brcmf_feat_names[id], err);
  56         }
  57 +
  58 +       ifp->fwil_fwerr = false;
  59  }
  60
  61  static void brcmf_feat_iovar_data_set(struct brcmf_if *ifp,
  62 @@ -120,6 +125,9 @@ static void brcmf_feat_iovar_data_set(st
  63  {
  64         int err;
  65
  66 +       /* we need to know firmware error */
  67 +       ifp->fwil_fwerr = true;
  68 +
  69         err = brcmf_fil_iovar_data_set(ifp, name, data, len);
  70         if (err != -BRCMF_FW_UNSUPPORTED) {
  71                 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
  72 @@ -128,6 +136,8 @@ static void brcmf_feat_iovar_data_set(st
  73                 brcmf_dbg(TRACE, "%s feature check failed: %d\n",
  74                           brcmf_feat_names[id], err);
  75         }
  76 +
  77 +       ifp->fwil_fwerr = false;
  78  }
  79
  80  #define MAX_CAPS_BUFFER_SIZE   512
  81 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c
  82 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c
  83 @@ -131,6 +131,9 @@ brcmf_fil_cmd_data(struct brcmf_if *ifp,
  84                           brcmf_fil_get_errstr((u32)(-fwerr)), fwerr);
  85                 err = -EBADE;
  86         }
  87 +       if (ifp->fwil_fwerr)
  88 +               return fwerr;
  89 +
  90         return err;
  91  }
  92