drm/amd/display: Guard amdgpu_dm_irq_schedule_work against NULL irq_wq

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[Why&How]
An interrupt racing DM teardown can reach amdgpu_dm_irq_schedule_work()
after the IRQ workqueue is destroyed, passing a NULL wq to queue_work()
and crashing in __queue_work(). Bail out early when adev->dm.irq_wq is
NULL so a registered handler is simply not queued.

Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Ivan Lipski 2026-08-18 12:39:27 -04:00 • committed by Alex Deucher

parent dd67db7d28

commit 2cfa2341ce

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drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c

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