mei_me_hbuf_empty_slots(9)

💅 mei_me_hbuf_empty_slots(9) 💅

okay so bestie, welcome to the Kernel API Manual, section 9 — this is the page for mei_me_hbuf_empty_slots, and honestly? she's a little icon. a tiny counter girl. the way she just... checks the host buffer and tells you how much room is left? obsessed 🦋

---

✨ NAME ✨

mei_me_hbuf_empty_slots — counts write empty slots. that's it. that's the whole job. she counts how many empty slots you've got for writing, and she does it flawlessly, no cap. 🎀

---

🌸 SYNOPSIS 🌸

int mei_me_hbuf_empty_slots (struct mei_device *dev );

like... she takes one (1) device pointer and hands you back an int. lowkey the most low-maintenance function you'll ever meet. 💖

---

🧚 ARGUMENTS 🧚

• dev — the device structure. that's the whole argument. she just needs to know which device we're talking about, and then she does her thing. main character energy fr fr 👑

---

⭐ RETURN ⭐

• -EOVERFLOW — if there's an overflow. 🚨 like bestie, something's wrong, the math did NOT math.
• otherwise — the empty slots count. that's your number, go off, use it wisely. 🌈

ngl, the "otherwise" branch is the happy path and she lives there rent-free. but keep an eye out for that -EOVERFLOW — it's giving red flag. 💀

---

👑 SEE ALSO 👑

so this is the part where the entire friend group shows up. the kernel file is ./drivers/misc/mei/hw-me.c, and here's literally everyone she's linked with — every single one, no skipping, i promised:

mei_me_reg_read(9), mei_me_reg_write(9), mei_me_mecbrw_read(9), mei_me_hcbww_write(9), mei_me_mecsr_read(9), mei_hcsr_read(9), mei_hcsr_write(9), mei_hcsr_set(9), mei_hcsr_set_hig(9), mei_me_d0i3c_read(9), mei_me_d0i3c_write(9), mei_me_trc_status(9), mei_me_fw_status(9), mei_me_hw_config(9), mei_me_pg_state(9), me_intr_disable(9), me_intr_clear(9), mei_me_intr_clear(9), mei_me_intr_enable(9), mei_me_intr_disable(9), mei_me_synchronize_irq(9), mei_me_hw_reset_release(9), mei_me_host_set_ready(9), mei_me_host_is_ready(9), mei_me_hw_is_ready(9), mei_me_hw_is_resetting(9), mei_gsc_pxp_check(9), mei_me_hw_ready_wait(9), mei_me_hw_start(9), mei_hbuf_filled_slots(9), mei_me_hbuf_is_empty(9), mei_me_hbuf_depth(9), mei_me_hbuf_write(9), mei_me_count_full_read_slots(9), mei_me_read_slots(9), mei_me_pg_set(9), mei_me_pg_unset(9), mei_me_pg_legacy_enter_sync(9), mei_me_pg_legacy_exit_sync(9), mei_me_pg_in_transition(9), mei_me_pg_is_enabled(9), mei_me_d0i3_set(9), mei_me_d0i3_unset(9), mei_me_d0i3_enter_sync(9), mei_me_d0i3_enter(9), mei_me_d0i3_exit_sync(9), mei_me_pg_legacy_intr(9), mei_me_d0i3_intr(9), mei_me_pg_intr(9), mei_me_pg_enter_sync(9), mei_me_pg_exit_sync(9), mei_me_hw_reset(9), mei_me_irq_quick_handler(9), mei_me_irq_thread_handler(9), mei_me_polling_thread(9), mei_me_fw_type_nm(9), mei_me_fw_type_sps_4(9), mei_me_fw_type_sps_ign(9), mei_me_dev_init(9)

^ that's the whole gc right there. iykyk. 🫶

---

mwah 💋 this page lives in ./drivers/misc/mei, and she's stamped October 2026 — so like, future icon behavior. shoutout to the Kernel API Manual for hosting her, section 9 and all. slay, periodt. 🎀✨