package/kernel/mac80211/patches/brcm/112-v5.4-0002-brcmfmac-split-brcmf_attach-and-brcmf_detach-functio.patch

   1 From 450914c39f88d1adada26256360dea7050ff4e83 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
   3 Date: Tue, 3 Sep 2019 06:29:27 +0200
   4 Subject: [PATCH 2/3] brcmfmac: split brcmf_attach() and brcmf_detach()
   5  functions
   6 MIME-Version: 1.0
   7 Content-Type: text/plain; charset=UTF-8
   8 Content-Transfer-Encoding: 8bit
   9
  10 Move code allocating/freeing wiphy out of above functions. This will
  11 allow reinitializing the driver (e.g. on some error) without allocating
  12 a new wiphy.
  13
  14 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  15 Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  16 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  17 ---
  18  .../broadcom/brcm80211/brcmfmac/bus.h         |  4 ++-
  19  .../broadcom/brcm80211/brcmfmac/core.c        | 33 ++++++++++++++----
  20  .../broadcom/brcm80211/brcmfmac/pcie.c        | 13 +++++--
  21  .../broadcom/brcm80211/brcmfmac/sdio.c        | 15 ++++++--
  22  .../broadcom/brcm80211/brcmfmac/usb.c         | 34 +++++++++++++++----
  23  5 files changed, 80 insertions(+), 19 deletions(-)
  24
  25 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
  26 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
  27 @@ -254,10 +254,12 @@ void brcmf_rx_frame(struct device *dev,
  28  /* Receive async event packet from firmware. Callee disposes of rxp. */
  29  void brcmf_rx_event(struct device *dev, struct sk_buff *rxp);
  30
  31 +int brcmf_alloc(struct device *dev, struct brcmf_mp_device *settings);
  32  /* Indication from bus module regarding presence/insertion of dongle. */
  33 -int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings);
  34 +int brcmf_attach(struct device *dev);
  35  /* Indication from bus module regarding removal/absence of dongle */
  36  void brcmf_detach(struct device *dev);
  37 +void brcmf_free(struct device *dev);
  38  /* Indication from bus module that dongle should be reset */
  39  void brcmf_dev_reset(struct device *dev);
  40  /* Request from bus module to initiate a coredump */
  41 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
  42 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
  43 @@ -1230,13 +1230,11 @@ fail:
  44         return ret;
  45  }
  46
  47 -int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings)
  48 +int brcmf_alloc(struct device *dev, struct brcmf_mp_device *settings)
  49  {
  50         struct wiphy *wiphy;
  51         struct cfg80211_ops *ops;
  52         struct brcmf_pub *drvr = NULL;
  53 -       int ret = 0;
  54 -       int i;
  55
  56         brcmf_dbg(TRACE, "Enter\n");
  57
  58 @@ -1254,6 +1252,21 @@ int brcmf_attach(struct device *dev, str
  59         drvr = wiphy_priv(wiphy);
  60         drvr->wiphy = wiphy;
  61         drvr->ops = ops;
  62 +       drvr->bus_if = dev_get_drvdata(dev);
  63 +       drvr->bus_if->drvr = drvr;
  64 +       drvr->settings = settings;
  65 +
  66 +       return 0;
  67 +}
  68 +
  69 +int brcmf_attach(struct device *dev)
  70 +{
  71 +       struct brcmf_bus *bus_if = dev_get_drvdata(dev);
  72 +       struct brcmf_pub *drvr = bus_if->drvr;
  73 +       int ret = 0;
  74 +       int i;
  75 +
  76 +       brcmf_dbg(TRACE, "Enter\n");
  77
  78         for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++)
  79                 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID;
  80 @@ -1262,9 +1275,6 @@ int brcmf_attach(struct device *dev, str
  81
  82         /* Link to bus module */
  83         drvr->hdrlen = 0;
  84 -       drvr->bus_if = dev_get_drvdata(dev);
  85 -       drvr->bus_if->drvr = drvr;
  86 -       drvr->settings = settings;
  87
  88         /* Attach and link in the protocol */
  89         ret = brcmf_proto_attach(drvr);
  90 @@ -1280,7 +1290,7 @@ int brcmf_attach(struct device *dev, str
  91         /* attach firmware event handler */
  92         brcmf_fweh_attach(drvr);
  93
  94 -       ret = brcmf_bus_started(drvr, ops);
  95 +       ret = brcmf_bus_started(drvr, drvr->ops);
  96         if (ret != 0) {
  97                 bphy_err(drvr, "dongle is not responding: err=%d\n", ret);
  98                 goto fail;
  99 @@ -1372,6 +1382,15 @@ void brcmf_detach(struct device *dev)
 100                 brcmf_cfg80211_detach(drvr->config);
 101                 drvr->config = NULL;
 102         }
 103 +}
 104 +
 105 +void brcmf_free(struct device *dev)
 106 +{
 107 +       struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 108 +       struct brcmf_pub *drvr = bus_if->drvr;
 109 +
 110 +       if (!drvr)
 111 +               return;
 112
 113         bus_if->drvr = NULL;
 114
 115 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
 116 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
 117 @@ -1430,6 +1430,7 @@ static int brcmf_pcie_reset(struct devic
 118         brcmf_pcie_bus_console_read(devinfo, true);
 119
 120         brcmf_detach(dev);
 121 +       brcmf_free(dev);
 122
 123         brcmf_pcie_release_irq(devinfo);
 124         brcmf_pcie_release_scratchbuffers(devinfo);
 125 @@ -1824,11 +1825,18 @@ static void brcmf_pcie_setup(struct devi
 126
 127         brcmf_pcie_intr_enable(devinfo);
 128         brcmf_pcie_hostready(devinfo);
 129 -       if (brcmf_attach(&devinfo->pdev->dev, devinfo->settings) == 0)
 130 -               return;
 131 +
 132 +       ret = brcmf_alloc(&devinfo->pdev->dev, devinfo->settings);
 133 +       if (ret)
 134 +               goto fail;
 135 +       ret = brcmf_attach(&devinfo->pdev->dev);
 136 +       if (ret)
 137 +               goto fail;
 138
 139         brcmf_pcie_bus_console_read(devinfo, false);
 140
 141 +       return;
 142 +
 143  fail:
 144         device_release_driver(dev);
 145  }
 146 @@ -1971,6 +1979,7 @@ brcmf_pcie_remove(struct pci_dev *pdev)
 147                 brcmf_pcie_intr_disable(devinfo);
 148
 149         brcmf_detach(&pdev->dev);
 150 +       brcmf_free(&pdev->dev);
 151
 152         kfree(bus->bus_priv.pcie);
 153         kfree(bus->msgbuf->flowrings);
 154 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
 155 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
 156 @@ -4247,17 +4247,26 @@ static void brcmf_sdio_firmware_callback
 157         sdiod->bus_if->chip = bus->ci->chip;
 158         sdiod->bus_if->chiprev = bus->ci->chiprev;
 159
 160 +       err = brcmf_alloc(sdiod->dev, sdiod->settings);
 161 +       if (err) {
 162 +               brcmf_err("brcmf_alloc failed\n");
 163 +               goto claim;
 164 +       }
 165 +
 166         /* Attach to the common layer, reserve hdr space */
 167 -       err = brcmf_attach(sdiod->dev, sdiod->settings);
 168 +       err = brcmf_attach(sdiod->dev);
 169         if (err != 0) {
 170                 brcmf_err("brcmf_attach failed\n");
 171 -               sdio_claim_host(sdiod->func1);
 172 -               goto checkdied;
 173 +               goto free;
 174         }
 175
 176         /* ready */
 177         return;
 178
 179 +free:
 180 +       brcmf_free(sdiod->dev);
 181 +claim:
 182 +       sdio_claim_host(sdiod->func1);
 183  checkdied:
 184         brcmf_sdio_checkdied(bus);
 185  release:
 186 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
 187 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
 188 @@ -1178,8 +1178,12 @@ static void brcmf_usb_probe_phase2(struc
 189         if (ret)
 190                 goto error;
 191
 192 +       ret = brcmf_alloc(devinfo->dev, devinfo->settings);
 193 +       if (ret)
 194 +               goto error;
 195 +
 196         /* Attach to the common driver interface */
 197 -       ret = brcmf_attach(devinfo->dev, devinfo->settings);
 198 +       ret = brcmf_attach(devinfo->dev);
 199         if (ret)
 200                 goto error;
 201
 202 @@ -1251,7 +1255,10 @@ static int brcmf_usb_probe_cb(struct brc
 203         }
 204
 205         if (!brcmf_usb_dlneeded(devinfo)) {
 206 -               ret = brcmf_attach(devinfo->dev, devinfo->settings);
 207 +               ret = brcmf_alloc(devinfo->dev, devinfo->settings);
 208 +               if (ret)
 209 +                       goto fail;
 210 +               ret = brcmf_attach(devinfo->dev);
 211                 if (ret)
 212                         goto fail;
 213                 /* we are done */
 214 @@ -1279,6 +1286,7 @@ static int brcmf_usb_probe_cb(struct brc
 215
 216  fail:
 217         /* Release resources in reverse order */
 218 +       brcmf_free(devinfo->dev);
 219         kfree(bus);
 220         brcmf_usb_detach(devinfo);
 221         return ret;
 222 @@ -1292,6 +1300,7 @@ brcmf_usb_disconnect_cb(struct brcmf_usb
 223         brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo);
 224
 225         brcmf_detach(devinfo->dev);
 226 +       brcmf_free(devinfo->dev);
 227         kfree(devinfo->bus_pub.bus);
 228         brcmf_usb_detach(devinfo);
 229  }
 230 @@ -1435,10 +1444,12 @@ static int brcmf_usb_suspend(struct usb_
 231
 232         brcmf_dbg(USB, "Enter\n");
 233         devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP;
 234 -       if (devinfo->wowl_enabled)
 235 +       if (devinfo->wowl_enabled) {
 236                 brcmf_cancel_all_urbs(devinfo);
 237 -       else
 238 +       } else {
 239                 brcmf_detach(&usb->dev);
 240 +               brcmf_free(&usb->dev);
 241 +       }
 242         return 0;
 243  }
 244
 245 @@ -1451,8 +1462,19 @@ static int brcmf_usb_resume(struct usb_i
 246         struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
 247
 248         brcmf_dbg(USB, "Enter\n");
 249 -       if (!devinfo->wowl_enabled)
 250 -               return brcmf_attach(devinfo->dev, devinfo->settings);
 251 +       if (!devinfo->wowl_enabled) {
 252 +               int err;
 253 +
 254 +               err = brcmf_alloc(&usb->dev, devinfo->settings);
 255 +               if (err)
 256 +                       return err;
 257 +
 258 +               err = brcmf_attach(devinfo->dev);
 259 +               if (err) {
 260 +                       brcmf_free(devinfo->dev);
 261 +                       return err;
 262 +               }
 263 +       }
 264
 265         devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP;
 266         brcmf_usb_rx_fill_all(devinfo);