radeon_hotplug_work_func(9)

💖 radeon_hotplug_work_func(9) 💖

okay so bestie, we're in the Kernel API Manual, section 9, and the star of the show is radeon_hotplug_work_func(9) — the display hotplug work handler. yes that's a lot of words, we'll get there 🫶

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✨ NAME ✨

radeon_hotplug_work_func — display hotplug work handler 💅

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🎀 SYNOPSIS 🎀

void radeon_hotplug_work_func (struct work_struct *work );

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🌸 ARGUMENTS 🌸

• work — the work struct. that's it, that's the whole arg, she's lowkey simple like that ✨

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🦋 DESCRIPTION 🦋

okay so picture this: something gets plugged in (or unplugged — dramatic either way 💀), and this function is the hot plug event work handler. and yes, it does this for all asics, no cap, every single one 🫶

the way it works is: the work gets scheduled straight from the irq handler whenever there was a hot plug interrupt. so the irq handler doesn't do the whole thing itself, it just goes "hey, radeon_hotplug_work_func, you're up" and hands it off 🎤

then our girl walks the connector table — like, actually goes through it, one by one — and calls the hotplug handler for each one. every connector gets her attention, nobody's left on read 💅

and then, the finale: she sends a drm hotplug event to alert userspace. like, "bestie wake up, something changed" 🔥 main character energy fr fr.

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👑 SEE ALSO 👑

the kernel file for this one lives at ./drivers/gpu/drm/radeon/radeon_irq_kms.c — cute, right? 🎀

and here's the whole friend group, go say hi:

• radeon_driver_irq_preinstall_kms(9)
• radeon_driver_irq_postinstall_kms(9)
• radeon_driver_irq_uninstall_kms(9)
• radeon_msi_ok(9)
• radeon_irq_kms_init(9)
• radeon_irq_kms_fini(9)
• radeon_irq_kms_sw_irq_get(9)
• radeon_irq_kms_sw_irq_get_delayed(9)
• radeon_irq_kms_sw_irq_put(9)
• radeon_irq_kms_pflip_irq_get(9)
• radeon_irq_kms_pflip_irq_put(9)
• radeon_irq_kms_enable_afmt(9)
• radeon_irq_kms_disable_afmt(9)
• radeon_irq_kms_enable_hpd(9)
• radeon_irq_kms_disable_hpd(9)
• radeon_irq_kms_set_irq_n_enabled(9)

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ngl that's a lot of SEE ALSOs but she knows everyone, it's giving connected 💀💖

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okay that's the whole page bestie, ily, go read some kernel source 🌈⭐

this one came out of ./drivers/gpu/drm/radeon — dated October 2026 — and it's filed under radeon_hotplug_work_func(9), periodt 💅🎀💜