radeon_doorbell_free(9)

💅 radeon_doorbell_free — bestie, we're freeing a doorbell

okay so real talk, this one comes straight out of the Kernel API Manual (the radeon_doorbell_free(9) page, to be exact) and honestly? it's short, it's sweet, it's iconic. let's get into it 🎀

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✨ NAME ✨

radeon_doorbell_free — Free a doorbell entry 🔔

like yes, that's literally the whole name section. she said "free a doorbell entry" and nothing else, and she ATE 💅 no notes.

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✨ SYNOPSIS ✨

void radeon_doorbell_free (struct radeon_device *rdev , u32 doorbell );

so it takes two things, returns void (nothing back, no cap, she's a "do the thing and dip" kind of function) — and that's it. that's the whole signature. 🦋

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✨ ARGUMENTS ✨

• rdev — a radeon_device pointer. that's your radeon device, your whole vibe, the main character of this operation 👑
• doorbell — the doorbell index. just the index, bestie, a u32. not the doorbell itself, the index. iykyk 🌸

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✨ DESCRIPTION ✨

Free a doorbell allocated for use by the driver (all asics) 💖

translation for the girlies: some doorbell was previously allocated for the driver to use, and this function frees it. and "all asics"? yep, every single one. this is not an asic-specific situation, it's giving universal. 🌈

super important: you're freeing a doorbell that was allocated for use by the driver. it's a free, it's a cleanup, it's the "we're done here" moment. 🫶

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✨ SEE ALSO ✨

okay this list is LONG and i'm obsessed with her for it. she's giving "linked to the entire radeon source tree" energy. first up, the actual file:

Kernel file ./drivers/gpu/drm/radeon/radeon_device.c

and now the whole friend group 🔥:

• radeon_program_register_sequence(9)
• radeon_surface_init(9)
• radeon_scratch_init(9)
• radeon_scratch_get(9)
• radeon_scratch_free(9)
• radeon_doorbell_init(9)
• radeon_doorbell_fini(9)
• radeon_doorbell_get(9)
• radeon_wb_disable(9)
• radeon_wb_fini(9)
• radeon_wb_init(9)
• radeon_vram_location(9)
• radeon_gtt_location(9)
• radeon_card_posted(9)
• radeon_update_bandwidth_info(9)
• radeon_boot_test_post_card(9)
• radeon_dummy_page_init(9)
• radeon_dummy_page_fini(9)
• cail_pll_read(9)
• cail_pll_write(9)
• cail_mc_read(9)
• cail_mc_write(9)
• cail_reg_write(9)
• cail_reg_read(9)
• cail_ioreg_write(9)
• cail_ioreg_read(9)
• radeon_atombios_init(9)
• radeon_atombios_fini(9)
• radeon_combios_init(9)
• radeon_combios_fini(9)
• radeon_vga_set_decode(9)
• radeon_gart_size_auto(9)
• radeon_check_arguments(9)
• radeon_switcheroo_set_state(9)
• radeon_switcheroo_can_switch(9)
• radeon_device_init(9)
• radeon_device_fini(9)
• radeon_gpu_reset(9)

like… that's a whole roster. go read them if you want the full lore, bestie 📚✨

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🎀 cute lil sign-off 🎀

this page lives in ./drivers/gpu/drm/radeon, and it's dated October 2026 — so mark your calendar, she's from the future fr fr 💀✨

anyway that's the whole page, no crumbs left, 10/10 would free a doorbell again. mwah 💖