package/kernel/mac80211/patches/335-v4.18-0002-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 [rafal@milecki.pl: use LINUX_VERSION_CODE]
  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 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  18 ---
  19  drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 1 +
  20  drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h    | 2 ++
  21  drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c   | 8 ++++++++
  22  drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c   | 1 +
  23  4 files changed, 12 insertions(+)
  24
  25 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
  26 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
  27 @@ -1165,6 +1165,9 @@ static struct sdio_driver brcmf_sdmmc_dr
  28  #ifdef CONFIG_PM_SLEEP
  29                 .pm = &brcmf_sdio_pm_ops,
  30  #endif /* CONFIG_PM_SLEEP */
  31 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 17, 0)
  32 +               .coredump = brcmf_dev_coredump,
  33 +#endif
  34         },
  35  };
  36
  37 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
  38 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
  39 @@ -250,6 +250,8 @@ int brcmf_attach(struct device *dev, str
  40  void brcmf_detach(struct device *dev);
  41  /* Indication from bus module that dongle should be reset */
  42  void brcmf_dev_reset(struct device *dev);
  43 +/* Request from bus module to initiate a coredump */
  44 +void brcmf_dev_coredump(struct device *dev);
  45
  46  /* Configure the "global" bus state used by upper layers */
  47  void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state);
  48 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
  49 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
  50 @@ -1201,6 +1201,14 @@ void brcmf_dev_reset(struct device *dev)
  51                 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
  52  }
  53
  54 +void brcmf_dev_coredump(struct device *dev)
  55 +{
  56 +       struct brcmf_bus *bus_if = dev_get_drvdata(dev);
  57 +
  58 +       if (brcmf_debug_create_memdump(bus_if, NULL, 0) < 0)
  59 +               brcmf_dbg(TRACE, "failed to create coredump\n");
  60 +}
  61 +
  62  void brcmf_detach(struct device *dev)
  63  {
  64         s32 i;
  65 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
  66 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
  67 @@ -2044,6 +2044,9 @@ static struct pci_driver brcmf_pciedrvr
  68  #ifdef CONFIG_PM
  69         .driver.pm = &brcmf_pciedrvr_pm,
  70  #endif
  71 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 17, 0)
  72 +       .driver.coredump = brcmf_dev_coredump,
  73 +#endif
  74  };
  75
  76