controller_fatal_error_show(9)

💅 controller_fatal_error_show(9) — the Kernel API Manual, bestie edition 🎀

okay so real talk, this is controller_fatal_error_show, a page straight out of the controller_fatal_error_show(9) section of the Kernel API Manual, and it's literally about checking whether the controller is under fatal err. that's the whole vibe. let's get into it ✨

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🌸 NAME 🌸

controller_fatal_error_show — check controller is under fatal err 💀

like, that's it. that's the job. she checks if your controller is having a fatal error moment. no cap.

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✨ SYNOPSIS ✨

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

bestie look at her. she takes three things and returns an ssize_t. iconic signature, no notes 🫶

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🦋 ARGUMENTS 🦋

• cdev — pointer to embedded class device. she lives in there, that's her home 🏠
• attr — device attribute. and listen… she's unused 🙈 literally just vibing in the parameter list, not doing a single thing
• buf — the buffer returned. this is where the output goes, main character energy only 💖

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🌈 DESCRIPTION 🌈

A sysfs 'read-only' shost attribute. periodt. that's the description. she's read-only, she's sysfs, she's an shost attribute, and honestly? she ate 💅

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👑 SEE ALSO 👑

the kernel file, exactly as it stands:

Kernel file ./drivers/scsi/pm8001/pm8001_ctl.c

and now the whole friend group, roll call 📋✨ — every single one:

• pm8001_ctl_mpi_interface_rev_show(9)
• pm8001_ctl_fw_version_show(9)
• pm8001_ctl_ila_version_show(9)
• pm8001_ctl_inactive_fw_version_show(9)
• pm8001_ctl_max_out_io_show(9)
• pm8001_ctl_max_devices_show(9)
• pm8001_ctl_max_sg_list_show(9)
• pm8001_ctl_sas_spec_support_show(9)
• pm8001_ctl_host_sas_address_show(9)
• pm8001_ctl_logging_level_show(9)
• pm8001_ctl_aap_log_show(9)
• pm8001_ctl_ib_queue_log_show(9)
• pm8001_ctl_ob_queue_log_show(9)
• pm8001_ctl_bios_version_show(9)
• event_log_size_show(9)
• pm8001_ctl_iop_log_show(9)
• pm8001_ctl_fatal_log_show(9)
• non_fatal_log_show(9)
• pm8001_ctl_gsm_log_show(9)
• ctl_mpi_state_show(9)
• ctl_hmi_error_show(9)
• ctl_raae_count_show(9)
• ctl_iop0_count_show(9)
• ctl_iop1_count_show(9)

twenty-four besties and every single one of them is in ./drivers/scsi/pm8001… well, the kernel file lives there, iykyk 🌸

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🧚 quick reality check: attr is genuinely unused, so don't go looking for hidden behaviour. she said "not my department" and honestly, respect.

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that's the whole page, babe — short, sweet, and read-only. 🍓

and finally, the sign-off you asked for: this little cutie comes from ./drivers/scsi/pm8001, dated October 2026, and you can find her filed under controller_fatal_error_show(9) if you ever need her again 💜🦋