drm/amdgpu: Wait for GFX idle before PTL state transition

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Ensure GFX engine is idle before switching PTL state to prevent
register access violations and CP hang. This addresses the race
condition where in-flight GPU commands could conflict with PTL
state changes.

Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Perry Yuan 2026-02-09 00:42:12 +08:00 • committed by Alex Deucher

parent d31098cb31

commit 82cfe59ba4

1 changed files with 5 additions and 0 deletions

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drivers/gpu/drm/amd/amdkfd/kfd_chardev.c

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