fwfault_debug_show(9)

💅 fwfault_debug_show(9) — kernel API manual, bestie edition 🎀

okay so we're in the fwfault_debug_show(9) page, which lives in the Kernel API Manual, and honestly? it's a short one. a little snack. let's get into it 🍓

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✨ NAME ✨

fwfault_debug_show — show/store fwfault_debug 💖

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🌸 SYNOPSIS 🌸

ssize_t fwfault_debug_show (struct device *cdev , struct
device_attribute *attr , char *buf );

that's the whole signature. returning a ssize_t, taking three pointers, living its truth ✨

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🦋 ARGUMENTS 🦋

• cdev — pointer to embedded class device. it's the device, but embedded. classy. 💅
• attr — ?. yes, literally just a question mark. the docs said "?" and i'm not gonna invent lore that isn't there, so: ?. iconic honestly. 😭
• buf — the buffer returned 🫶

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👑 DESCRIPTION 👑

so here's the tea: mpt3sas_fwfault_debug is a command line option and a sysfs 'read/write' shost attribute. both. main character energy, fr fr 💅✨

no cap, that's the whole description. short page, big vibe. 🔥

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🌈 SEE ALSO 🌈

the kernel file ./drivers/scsi/mpt3sas/mpt3sas_ctl.c says hi, and then it hands you the entire friend group. everyone's here. iykyk 💜

• enum block_state(9)
• _ctl_display_some_debug(9)
• mpt3sas_ctl_done(9)
• _ctl_check_event_type(9)
• mpt3sas_ctl_add_to_event_log(9)
• mpt3sas_ctl_event_callback(9)
• _ctl_verify_adapter(9)
• mpt3sas_ctl_pre_reset_handler(9)
• mpt3sas_ctl_clear_outstanding_ioctls(9)
• mpt3sas_ctl_reset_done_handler(9)
• _ctl_fasync(9)
• _ctl_poll(9)
• _ctl_set_task_mid(9)
• _ctl_send_mctp_passthru_req(9)
• _ctl_do_mpt_command(9)
• _ctl_getiocinfo(9)
• _ctl_eventquery(9)
• _ctl_eventenable(9)
• _ctl_eventreport(9)
• _ctl_do_reset(9)
• _ctl_btdh_search_sas_device(9)
• _ctl_btdh_search_pcie_device(9)
• _ctl_btdh_search_raid_device(9)
• _ctl_btdh_mapping(9)
• _ctl_diag_capability(9)
• _ctl_diag_get_bufftype(9)
• _ctl_diag_register_2(9)
• mpt3sas_enable_diag_buffer(9)
• _ctl_diag_register(9)
• _ctl_diag_unregister(9)
• _ctl_diag_query(9)
• mpt3sas_send_diag_release(9)
• _ctl_diag_release(9)
• _ctl_diag_read_buffer(9)
• _ctl_addnl_diag_query(9)
• _ctl_enable_diag_sbr_reload(9)
• _ctl_compat_mpt_command(9)
• _ctl_ioctl_main(9)
• _ctl_get_mpt_mctp_passthru_adapter(9)
• mpt3sas_get_device_count(9)
• _ctl_ioctl(9)
• _ctl_mpt2_ioctl(9)
• _ctl_ioctl_compat(9)
• _ctl_mpt2_ioctl_compat(9)
• version_fw_show(9)
• version_bios_show(9)
• version_mpi_show(9)
• version_product_show(9)
• version_nvdata_persistent_show(9)
• version_nvdata_default_show(9)
• board_name_show(9)
• board_assembly_show(9)
• board_tracer_show(9)
• io_delay_show(9)
• device_delay_show(9)
• fw_queue_depth_show(9)
• host_sas_address_show(9)
• logging_level_show(9)
• ioc_reset_count_show(9)
• reply_queue_count_show(9)
• BRM_status_show(9)
• host_trace_buffer_size_show(9)
• host_trace_buffer_show(9)
• host_trace_buffer_enable_show(9)
• diag_trigger_master_show(9)
• diag_trigger_master_store(9)
• diag_trigger_event_show(9)
• diag_trigger_event_store(9)
• diag_trigger_scsi_show(9)
• diag_trigger_scsi_store(9)
• diag_trigger_mpi_show(9)
• diag_trigger_mpi_store(9)
• drv_support_bitmap_show(9)
• enable_sdev_max_qd_show(9)
• enable_sdev_max_qd_store(9)
• sas_address_show(9)
• sas_device_handle_show(9)
• sas_ncq_prio_supported_show(9)
• sas_ncq_prio_enable_show(9)
• mpt3sas_ctl_init(9)
• mpt3sas_ctl_release(9)
• mpt3sas_ctl_exit(9)

like i said. the whole group chat. 😭💀

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and that's the page!! this one came from ./drivers/scsi/mpt3sas, dated October 2026, and it's signed fwfault_debug_show(9) — so go read those SEE ALSOs, bestie, they're literally waiting for you 🧚💖✨