mei_fw_status_str(9)

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

okay so this page is mei_fw_status_str(9) from the Kernel API Manual, and it's genuinely one of the cuter little helpers ngl. its whole personality? grab the firmware status registers off your MEI device and turn them into a string you can actually read. icon behavior, no cap 💖

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✨ NAME ✨

mei_fw_status_str — fetch and convert fw status registers to printable string 🌸

like, it goes and gets the firmware status registers and converts them into a printable string. that's the whole vibe check and it passes.

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✨ SYNOPSIS ✨

ssize_t mei_fw_status_str (struct mei_device *dev , char *buf , size_t
len );

lowkey iconic signature, returns ssize_t and everything 🫶

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✨ ARGUMENTS ✨

• dev — the device structure. bestie, you gotta hand over your struct mei_device * here 💜
• buf — string buffer at minimal size MEI_FW_STATUS_STR_SZ. that's the minimum, don't be out here giving it less 😭
• len — buffer len must be >= MEI_FW_STATUS_STR_SZ. yes that's a hard requirement, not a suggestion, okurrr 💅

fr fr check your sizes before you call this. MEI_FW_STATUS_STR_SZ is the floor for both of them, not a vibe to negotiate with.

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✨ RETURN ✨

number of bytes written, or < 0 on failure 🦋

so like, happy path = how many bytes you got. sad path = negative, and you deal with it. that's it, that's the tea ☕

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✨ SEE ALSO ✨

all the siblings and neighbors, in the exact order the page lists them, because we don't skip anyone in this house 👑

• Kernel file ./drivers/misc/mei/mei_dev.h
• enum mei_dev_pxp_mode(9)
• enum mei_dev_reset_to_pxp(9)
• enum mei_cb_file_ops(9)
• enum mei_cl_io_mode(9)
• struct mei_dma_dscr(9)
• struct mei_me_client(9)
• struct mei_cl_cb(9)
• struct mei_cl_vtag(9)
• struct mei_cl(9)
• struct mei_hw_ops(9)
• enum mei_pg_event(9)
• enum mei_pg_state(9)
• struct mei_fw_version(9)
• enum mei_dev_kind(9)
• struct mei_device(9)
• mei_data2slots(9)
• mei_hbm2slots(9)
• mei_slots2data(9)
• kind_is_gsc(9)
• kind_is_gscfi(9)

iykyk, that's a whole friend group right there 🧚

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and that's the page!! mwah 💋 source lives over in ./drivers/misc/mei, dated October 2026 — go read the whole squad of mei_*(9) pages, they ate and left no crumbs 💖✨🍓