package/kernel/mac80211/patches/314-v4.16-0003-brcmfmac-stabilise-the-value-of-sbwad-in-use-for-som.patch

   1 From 874bb8e49b7c6368f8ff9f2566c7bd06a2249be0 Mon Sep 17 00:00:00 2001
   2 From: Ian Molton <ian@mnementh.co.uk>
   3 Date: Tue, 19 Dec 2017 13:47:09 +0100
   4 Subject: [PATCH] brcmfmac: stabilise the value of ->sbwad in use for some xfer
   5  routines.
   6
   7 The IO functions operate within the Chipcommon IO window. Explicitly
   8 set this, rather than relying on the last initialisation IO access to
   9 leave it set to the right value by chance.
  10
  11 Signed-off-by: Ian Molton <ian@mnementh.co.uk>
  12 Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  13 Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  14 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  15 ---
  16  drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 8 ++++----
  17  drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c   | 5 +++++
  18  drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h   | 1 +
  19  3 files changed, 10 insertions(+), 4 deletions(-)
  20
  21 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
  22 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
  23 @@ -529,7 +529,7 @@ int brcmf_sdiod_recv_buf(struct brcmf_sd
  24
  25  int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
  26  {
  27 -       u32 addr = sdiodev->sbwad;
  28 +       u32 addr = sdiodev->cc_core->base;
  29         int err = 0;
  30
  31         brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
  32 @@ -552,7 +552,7 @@ int brcmf_sdiod_recv_chain(struct brcmf_
  33  {
  34         struct sk_buff *glom_skb = NULL;
  35         struct sk_buff *skb;
  36 -       u32 addr = sdiodev->sbwad;
  37 +       u32 addr = sdiodev->cc_core->base;
  38         int err = 0;
  39
  40         brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
  41 @@ -593,7 +593,7 @@ done:
  42  int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
  43  {
  44         struct sk_buff *mypkt;
  45 -       u32 addr = sdiodev->sbwad;
  46 +       u32 addr = sdiodev->cc_core->base;
  47         int err;
  48
  49         mypkt = brcmu_pkt_buf_get_skb(nbytes);
  50 @@ -625,7 +625,7 @@ int brcmf_sdiod_send_pkt(struct brcmf_sd
  51                          struct sk_buff_head *pktq)
  52  {
  53         struct sk_buff *skb;
  54 -       u32 addr = sdiodev->sbwad;
  55 +       u32 addr = sdiodev->cc_core->base;
  56         int err;
  57
  58         brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
  59 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
  60 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
  61 @@ -3842,6 +3842,11 @@ brcmf_sdio_probe_attach(struct brcmf_sdi
  62         if (!bus->sdio_core)
  63                 goto fail;
  64
  65 +       /* Pick up the CHIPCOMMON core info struct, for bulk IO in bcmsdh.c */
  66 +       sdiodev->cc_core = brcmf_chip_get_core(bus->ci, BCMA_CORE_CHIPCOMMON);
  67 +       if (!sdiodev->cc_core)
  68 +               goto fail;
  69 +
  70         sdiodev->settings = brcmf_get_module_param(sdiodev->dev,
  71                                                    BRCMF_BUSTYPE_SDIO,
  72                                                    bus->ci->chip,
  73 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h
  74 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h
  75 @@ -178,6 +178,7 @@ struct brcmf_sdio_dev {
  76         struct sdio_func *func[SDIO_MAX_FUNCS];
  77         u8 num_funcs;                   /* Supported funcs on client */
  78         u32 sbwad;                      /* Save backplane window address */
  79 +       struct brcmf_core *cc_core;     /* chipcommon core info struct */
  80         struct brcmf_sdio *bus;
  81         struct device *dev;
  82         struct brcmf_bus *bus_if;