drm_modeset_unlock_all(9)

💅 drm_modeset_unlock_all 💅

okay so bestie, we're in the Kernel API Manual and this page is literally about dropping all the modeset locks 🔓✨ it's giving cleanup era, but make it kernel.

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🌸 NAME 🌸

• drm_modeset_unlock_all — drop all modeset locks, like, all of them 💅

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✨ SYNOPSIS ✨

void drm_modeset_unlock_all (struct drm_device *dev );

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🎀 ARGUMENTS 🎀

• dev — DRM device 🫶 that's the device you're working with, no cap.

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🦋 DESCRIPTION 🦋

okay so drm_modeset_unlock_all drops all the modeset locks that were taken by a previous call to the drm_modeset_lock_all function. previous call, bestie — don't forget that part 👀

💀 deprecated alert, fr fr: this function is deprecated. it still uses the lock acquisition context stored in drm_device.mode_config. that's lowkey convenient because it removes the need to manually deal with the acquisition context — which helps with conversion of existing code — but it's also brittle 😭 because the context is global and care must be taken not to nest calls. global context + nested calls = not the vibe.

new code should pass the acquisition context directly to the drm_modeset_drop_locks function. that's the iconic move 👑 new code, new context-passing behavior, periodt.

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/gpu/drm/drm_modeset_lock.c — that's where it lives, iykyk 🗂️
• kms locking(9)
• drm_modeset_lock_all(9)
• drm_warn_on_modeset_not_all_locked(9)
• drm_modeset_acquire_init(9)
• drm_modeset_acquire_fini(9)
• drm_modeset_drop_locks(9)
• drm_modeset_backoff(9)
• drm_modeset_lock_init(9)
• drm_modeset_lock(9)
• drm_modeset_lock_single_interruptible(9)
• drm_modeset_unlock(9)
• drm_modeset_lock_all_ctx(9)

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mwah 💋 this page is sourced from ./drivers/gpu/drm, dated October 2026, and it's drm_modeset_unlock_all(9) from the Kernel API Manual. bye bestie 🫶✨