package/kernel/mac80211/patches/325-v4.17-0002-brcmfmac-move-allocation-of-control-rx-buffer-to-brc.patch

   1 From 4b5adc736828dc25ca33e263ad8c0b9dcd3bf325 Mon Sep 17 00:00:00 2001
   2 From: Arend Van Spriel <arend.vanspriel@broadcom.com>
   3 Date: Tue, 20 Feb 2018 00:14:19 +0100
   4 Subject: [PATCH] brcmfmac: move allocation of control rx buffer to
   5  brcmf_sdio_bus_preinit()
   6
   7 Allocate the control rx buffer needed for firmware control interface
   8 during brcmf_sdio_bus_preinit(). This relies on common layer setting
   9 struct brcmf_bus::maxctl during brcmf_attach(). By moving the allocation
  10 we can move brcmf_attach() in subsequent change.
  11
  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  .../wireless/broadcom/brcm80211/brcmfmac/sdio.c    | 26 ++++++++++------------
  19  1 file changed, 12 insertions(+), 14 deletions(-)
  20
  21 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
  22 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
  23 @@ -1707,7 +1707,6 @@ brcmf_sdio_read_control(struct brcmf_sdi
  24         int sdret;
  25
  26         brcmf_dbg(TRACE, "Enter\n");
  27 -
  28         if (bus->rxblen)
  29                 buf = vzalloc(bus->rxblen);
  30         if (!buf)
  31 @@ -3411,6 +3410,18 @@ static int brcmf_sdio_bus_preinit(struct
  32         u32 value;
  33         int err;
  34
  35 +       /* maxctl provided by common layer */
  36 +       if (WARN_ON(!bus_if->maxctl))
  37 +               return -EINVAL;
  38 +
  39 +       /* Allocate control receive buffer */
  40 +       bus_if->maxctl += bus->roundup;
  41 +       value = roundup((bus_if->maxctl + SDPCM_HDRLEN), ALIGNMENT);
  42 +       value += bus->head_align;
  43 +       bus->rxbuf = kmalloc(value, GFP_ATOMIC);
  44 +       if (bus->rxbuf)
  45 +               bus->rxblen = value;
  46 +
  47         /* the commands below use the terms tx and rx from
  48          * a device perspective, ie. bus:txglom affects the
  49          * bus transfers from device to host.
  50 @@ -4209,19 +4220,6 @@ struct brcmf_sdio *brcmf_sdio_probe(stru
  51         bus->blocksize = bus->sdiodev->func2->cur_blksize;
  52         bus->roundup = min(max_roundup, bus->blocksize);
  53
  54 -       /* Allocate buffers */
  55 -       if (bus->sdiodev->bus_if->maxctl) {
  56 -               bus->sdiodev->bus_if->maxctl += bus->roundup;
  57 -               bus->rxblen =
  58 -                   roundup((bus->sdiodev->bus_if->maxctl + SDPCM_HDRLEN),
  59 -                           ALIGNMENT) + bus->head_align;
  60 -               bus->rxbuf = kmalloc(bus->rxblen, GFP_ATOMIC);
  61 -               if (!(bus->rxbuf)) {
  62 -                       brcmf_err("rxbuf allocation failed\n");
  63 -                       goto fail;
  64 -               }
  65 -       }
  66 -
  67         sdio_claim_host(bus->sdiodev->func1);
  68
  69         /* Disable F2 to clear any intermediate frame state on the dongle */