panthor_fw_unplug(9)

💖 panthor_fw_unplug(9) — Kernel API Manual 💖

okay bestie, welcome to panthor_fw_unplug(9), straight out of the Kernel API Manual ✨ this is the lil cleanup queen of the panthor firmware world and she has ONE job: making sure everything is chill before the device dips 😌🫶

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🌸 NAME 🌸

panthor_fw_unplug — literally called when the device is unplugged, no cap 💅

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✨ SYNOPSIS ✨

void panthor_fw_unplug (struct panthor_device *ptdev );

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🎀 ARGUMENTS 🎀

• ptdev — the Device. that's it, that's the whole vibe 🦋

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💜 DESCRIPTION 💜

so this function has to make sure all pending operations are flushed before it goes and releases device resources — which is the whole point, because that's what prevents any interaction with the HW 🔥 think of it as the "everyone out of the pool before we drain it" moment 🏊‍♀️💀

ngl this part matters: if there is still FW-related work running after this function returns, those guys must use drm_dev_{enter,exit}() and skip any HW access when drm_dev_enter returns false 🙈 like, do not touch the hardware if the gate says no, fr fr.

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🦋 SEE ALSO 🦋

Kernel file ./drivers/gpu/drm/panthor/panthor_fw.c

and the whole friend group 👑:

• struct panthor_fw_binary_hdr(9)
• enum panthor_fw_binary_entry_type(9)
• struct panthor_fw_binary_section_entry_hdr(9)
• struct panthor_fw_binary_iter(9)
• struct panthor_fw_section(9)
• struct panthor_fw_iface(9)
• struct panthor_fw(9)
• panthor_fw_get_glb_iface(9)
• panthor_fw_get_csg_iface(9)
• panthor_fw_get_cs_iface(9)
• panthor_fw_conv_timeout(9)
• panthor_fw_alloc_queue_iface_mem(9)
• panthor_fw_alloc_suspend_buf_mem(9)
• iface_fw_to_cpu_addr(9)
• panthor_fw_pre_reset(9)
• panthor_fw_post_reset(9)
• panthor_fw_wait_acks(9)
• panthor_fw_glb_wait_acks(9)
• panthor_fw_csg_wait_acks(9)
• panthor_fw_ring_csg_doorbells(9)
• panthor_fw_init(9)

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okay that's the whole page bestie, go flush your pending ops and stan a clean shutdown 🧚‍♀️✨

this cutie lives at ./drivers/gpu/drm/panthor, the version is October 2026, and she answers to panthor_fw_unplug(9) — mwah 💋🎀