package/kernel/mac80211/patches/331-v4.18-0006-brcmfmac-add-support-for-sysfs-initiated-coredump.patch

   1 From 8e072168f75ebce85b96cbcefea2b10ddbd5913f Mon Sep 17 00:00:00 2001
   2 From: Arend Van Spriel <arend.vanspriel@broadcom.com>
   3 Date: Wed, 16 May 2018 14:11:59 +0200
   4 Subject: [PATCH] brcmfmac: add support for sysfs initiated coredump
   5
   6 The driver already supports device coredump initiated by firmware
   7 event. Since commit 3c47d19ff4dc ("drivers: base: add coredump driver
   8 ops") it is also possible to initiate it from user-space through
   9 sysfs. This patch adds support for SDIO and PCIe devices.
  10
  11 Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
  12 Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
  13 Reviewed-by: Franky Lin <franky.lin@broadcom.com>
  14 Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  15 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  16 ---
  17  drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 1 +
  18  drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h    | 2 ++
  19  drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c   | 8 ++++++++
  20  drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c   | 1 +
  21  4 files changed, 12 insertions(+)
  22
  23 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
  24 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
  25 @@ -1299,6 +1299,9 @@ static struct sdio_driver brcmf_sdmmc_dr
  26  #ifdef CONFIG_PM_SLEEP
  27                 .pm = &brcmf_sdio_pm_ops,
  28  #endif /* CONFIG_PM_SLEEP */
  29 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0)
  30 +               .coredump = brcmf_dev_coredump,
  31 +#endif
  32         },
  33  };
  34
  35 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
  36 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
  37 @@ -231,6 +231,8 @@ void brcmf_detach(struct device *dev);
  38  void brcmf_dev_reset(struct device *dev);
  39  /* Indication from bus module to change flow-control state */
  40  void brcmf_txflowblock(struct device *dev, bool state);
  41 +/* Request from bus module to initiate a coredump */
  42 +void brcmf_dev_coredump(struct device *dev);
  43
  44  /* Notify the bus has transferred the tx packet to firmware */
  45  void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success);
  46 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
  47 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
  48 @@ -1159,6 +1159,14 @@ void brcmf_dev_reset(struct device *dev)
  49                 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
  50  }
  51
  52 +void brcmf_dev_coredump(struct device *dev)
  53 +{
  54 +       struct brcmf_bus *bus_if = dev_get_drvdata(dev);
  55 +
  56 +       if (brcmf_debug_create_memdump(bus_if, NULL, 0) < 0)
  57 +               brcmf_dbg(TRACE, "failed to create coredump\n");
  58 +}
  59 +
  60  void brcmf_detach(struct device *dev)
  61  {
  62         s32 i;
  63 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
  64 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
  65 @@ -1995,6 +1995,9 @@ static struct pci_driver brcmf_pciedrvr
  66  #ifdef CONFIG_PM
  67         .driver.pm = &brcmf_pciedrvr_pm,
  68  #endif
  69 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0)
  70 +       .driver.coredump = brcmf_dev_coredump,
  71 +#endif
  72  };
  73
  74