accel/amdxdna: Fix unexpected wait when flushing notifier_wq

In amdxdna_gem_obj_free(), flush_workqueue(xdna->notifier_wq) waits for
all pending work items on the device-global notifier workqueue, rather
than only the work items associated with the BO being freed.

If another BO has a pending hmm_unreg_work, freeing an unrelated BO can
be unnecessarily blocked until that work completes.

mmu_interval_notifier_remove() is deferred to a workqueue because it
cannot be called from the MMU notifier callback itself. The BO free path
is not a notifier callback, so call mmu_interval_notifier_remove()
directly there and avoid the workqueue.

Fixes: e486147c912f ("accel/amdxdna: Add BO import and export")
Reviewed-by: Max Zhen <max.zhen@amd.com>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260813205016.941743-1-lizhi.hou@amd.com

0 files changed, 0 insertions, 0 deletions