check_eeprom(9)

💖 check_eeprom(9) 💖

okay so this one lives in the Kernel API Manual and honestly bestie, it's a little shy — two arguments, one job, and a whole lot of friends in SEE ALSO. let's get into it 🫶

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✨ NAME ✨

check_eeprom — literally just get the contents of the eeprom and check 'em 💅

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🌸 SYNOPSIS 🌸

void check_eeprom (struct NvRamType *eeprom , unsigned long io_port );

no cap, that's the whole signature 🎀

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🦋 ARGUMENTS 🦋

• eeprom — a strcuture that you, the caller, allocated, and that the eeprom data gets read into. yes, it's your memory, your responsibility, main character energy 👑
• io_port — the io port to read from. that's the one, that's the port 🌀

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💅 DESCRIPTION 💅

So what happens is: it reads seeprom for 128 bytes and drops them into the memory provider in eeprom. 🌈

Then — and this is the important part — it checks the checksum. and if the checksum is not correct?? 😭 it does not panic, it does not cry, it just uses a set of default values instead. iconic behaviour honestly. resilient queen. 👑

lowkey a vibe check for your eeprom: if the checksum doesn't pass, defaults it is 🍓

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🔥 SEE ALSO 🔥

the group chat is huge, bestie. all of these hang out in the kernel file ./drivers/scsi/dc395x.c:

• set_safe_settings(9)
• fix_settings(9)
• eeprom_index_to_delay(9)
• delay_to_eeprom_index(9)
• eeprom_override(9)
• dc395x_queue_command_lck(9)
• dc395x_handle_interrupt(9)
• device_alloc(9)
• adapter_add_device(9)
• adapter_remove_device(9)
• adapter_remove_and_free_device(9)
• adapter_remove_and_free_all_devices(9)
• dc395x_sdev_init(9)
• dc395x_sdev_destroy(9)
• trms1040_wait_30us(9)
• trms1040_write_cmd(9)
• trms1040_set_data(9)
• trms1040_write_all(9)
• trms1040_get_data(9)
• trms1040_read_all(9)
• print_eeprom_settings(9)
• adapter_print_config(9)
• adapter_init_params(9)
• adapter_init_scsi_host(9)
• adapter_init_chip(9)
• adapter_init(9)
• adapter_uninit_chip(9)
• adapter_uninit(9)
• dc395x_init_one(9)
• dc395x_remove_one(9)

like I said. the whole friend group. iykyk 💜

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and that's the page!! this one came from ./drivers/scsi, dated October 2026 — check_eeprom(9) out, mwah 💋✨🎀