drm/amdgpu: Handle concurrent UALINK handle import race

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When two threads import the same UALINK handle concurrently, the first
xa_insert() succeeds and the second gets -EBUSY. Convert -EBUSY to
-EAGAIN so user-space retries instead of seeing a spurious error.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Mukul Joshi 2026-08-14 13:40:38 -04:00 • committed by Alex Deucher

parent f04ff7571e

commit 74a6f99cf3

1 changed files with 9 additions and 3 deletions

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drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c

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