package/kernel/mac80211/patches/321-v4.16-0001-brcmfmac-assure-bcdc-dcmd-api-does-not-return-value-.patch

   1 From 5242a5444e0b6464d7455beb55d936dd192b5e9d Mon Sep 17 00:00:00 2001
   2 From: Arend Van Spriel <arend.vanspriel@broadcom.com>
   3 Date: Mon, 22 Jan 2018 21:46:39 +0100
   4 Subject: [PATCH] brcmfmac: assure bcdc dcmd api does not return value > 0
   5
   6 The protocol layer api defines callbacks for dongle commands.
   7 Although not really well documented these should only return an
   8 error code in case of an error, or 0 upon success. In the bcdc
   9 protocol it can return value above 0 and we carry a fix in the
  10 caller of the protocol layer api. This patch makes it adhere to
  11 the intent of the api as described above.
  12
  13 Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
  14 Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
  15 Reviewed-by: Franky Lin <franky.lin@broadcom.com>
  16 Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  17 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  18 ---
  19  drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c | 6 +++++-
  20  drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c | 8 +++-----
  21  2 files changed, 8 insertions(+), 6 deletions(-)
  22
  23 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
  24 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
  25 @@ -211,6 +211,8 @@ retry:
  26                 memcpy(buf, info, len);
  27         }
  28
  29 +       ret = 0;
  30 +
  31         /* Check the ERROR flag */
  32         if (flags & BCDC_DCMD_ERROR)
  33                 ret = le32_to_cpu(msg->status);
  34 @@ -225,7 +227,7 @@ brcmf_proto_bcdc_set_dcmd(struct brcmf_p
  35  {
  36         struct brcmf_bcdc *bcdc = (struct brcmf_bcdc *)drvr->proto->pd;
  37         struct brcmf_proto_bcdc_dcmd *msg = &bcdc->msg;
  38 -       int ret = 0;
  39 +       int ret;
  40         u32 flags, id;
  41
  42         brcmf_dbg(BCDC, "Enter, cmd %d len %d\n", cmd, len);
  43 @@ -249,6 +251,8 @@ brcmf_proto_bcdc_set_dcmd(struct brcmf_p
  44                 goto done;
  45         }
  46
  47 +       ret = 0;
  48 +
  49         /* Check the ERROR flag */
  50         if (flags & BCDC_DCMD_ERROR)
  51                 ret = le32_to_cpu(msg->status);
  52 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c
  53 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c
  54 @@ -121,11 +121,9 @@ brcmf_fil_cmd_data(struct brcmf_if *ifp,
  55         else
  56                 err = brcmf_proto_query_dcmd(drvr, ifp->ifidx, cmd, data, len);
  57
  58 -       if (err >= 0)
  59 -               return 0;
  60 -
  61 -       brcmf_dbg(FIL, "Failed: %s (%d)\n",
  62 -                 brcmf_fil_get_errstr((u32)(-err)), err);
  63 +       if (err)
  64 +               brcmf_dbg(FIL, "Failed: %s (%d)\n",
  65 +                         brcmf_fil_get_errstr((u32)(-err)), err);
  66
  67         return err;
  68  }