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Commit a1bec062 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/amd: Use wait_event in put_pasid_state_wait 



Now that I learned about possible spurious wakeups this
place needs fixing too. Replace the self-coded sleep variant
with the generic wait_event() helper.

Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 91f65fac

drivers/iommu/amd_iommu_v2.c

+1 −8
Original line number Diff line number Diff line
@@ -266,14 +266,7 @@ static void put_pasid_state(struct pasid_state *pasid_state) 


static void put_pasid_state_wait(struct pasid_state *pasid_state)

{

	DEFINE_WAIT(wait);



	prepare_to_wait(&pasid_state->wq, &wait, TASK_UNINTERRUPTIBLE);



	if (!atomic_dec_and_test(&pasid_state->count))

		schedule();



	finish_wait(&pasid_state->wq, &wait);

	wait_event(pasid_state->wq, !atomic_read(&pasid_state->count));

	free_pasid_state(pasid_state);

}