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    Subject[PATCH 1/3] brcmfmac: add support for sysfs initiated coredump
    Date
    The driver already supports device coredump initiated by firmware
    event. Since commit 3c47d19ff4dc ("drivers: base: add coredump driver
    ops") it is also possible to initiate it from user-space through
    sysfs. This patch adds support for SDIO and PCIe devices.

    Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
    Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
    Reviewed-by: Franky Lin <franky.lin@broadcom.com>
    Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
    ---
    drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 1 +
    drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h | 2 ++
    drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c | 7 +++++++
    drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 1 +
    4 files changed, 11 insertions(+)

    diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
    index 0b68240..3220b69 100644
    --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
    +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
    @@ -1164,6 +1164,7 @@ static int brcmf_ops_sdio_resume(struct device *dev)
    #ifdef CONFIG_PM_SLEEP
    .pm = &brcmf_sdio_pm_ops,
    #endif /* CONFIG_PM_SLEEP */
    + .coredump = brcmf_dev_coredump,
    },
    };

    diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
    index 0b76a61..77d1f34 100644
    --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
    +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
    @@ -249,6 +249,8 @@ int brcmf_bus_get_fwname(struct brcmf_bus *bus, uint chip, uint chiprev,
    void brcmf_detach(struct device *dev);
    /* Indication from bus module that dongle should be reset */
    void brcmf_dev_reset(struct device *dev);
    +/* Request from bus module to initiate a coredump */
    +int brcmf_dev_coredump(struct device *dev);

    /* Configure the "global" bus state used by upper layers */
    void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state);
    diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
    index 930e423..d06ffe0 100644
    --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
    +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
    @@ -1110,6 +1110,13 @@ void brcmf_dev_reset(struct device *dev)
    brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
    }

    +int brcmf_dev_coredump(struct device *dev)
    +{
    + struct brcmf_bus *bus_if = dev_get_drvdata(dev);
    +
    + return brcmf_debug_create_memdump(bus_if, NULL, 0);
    +}
    +
    void brcmf_detach(struct device *dev)
    {
    s32 i;
    diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
    index 8752707..502dd7b 100644
    --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
    +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
    @@ -2005,6 +2005,7 @@ static int brcmf_pcie_pm_leave_D3(struct device *dev)
    #ifdef CONFIG_PM
    .driver.pm = &brcmf_pciedrvr_pm,
    #endif
    + .driver.coredump = brcmf_dev_coredump,
    };


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