From ac3b708ad49f77b44faa104057783f161491e9e4 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Wed, 7 Jun 2017 14:38:15 +0200 Subject: [PATCH] iommu/amd: Remove queue_release() function We can use queue_ring_free_flushed() instead, so remove this redundancy. Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu.c | 28 ++++++++-------------------- 1 file changed, 8 insertions(+), 20 deletions(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 00c1796e07bf..6498f5baa7ea 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -1859,21 +1859,6 @@ static inline bool queue_ring_full(struct flush_queue *queue) #define queue_ring_for_each(i, q) \ for (i = (q)->head; i != (q)->tail; i = (i + 1) % FLUSH_QUEUE_SIZE) -static void queue_release(struct dma_ops_domain *dom, - struct flush_queue *queue) -{ - unsigned i; - - assert_spin_locked(&queue->lock); - - queue_ring_for_each(i, queue) - free_iova_fast(&dom->iovad, - queue->entries[i].iova_pfn, - queue->entries[i].pages); - - queue->head = queue->tail = 0; -} - static inline unsigned queue_ring_add(struct flush_queue *queue) { unsigned idx = queue->tail; @@ -1925,12 +1910,15 @@ static void queue_add(struct dma_ops_domain *dom, queue = get_cpu_ptr(dom->flush_queue); spin_lock_irqsave(&queue->lock, flags); - queue_ring_free_flushed(dom, queue); - - if (queue_ring_full(queue)) { + /* + * When ring-queue is full, flush the entries from the IOTLB so + * that we can free all entries with queue_ring_free_flushed() + * below. + */ + if (queue_ring_full(queue)) dma_ops_domain_flush_tlb(dom); - queue_release(dom, queue); - } + + queue_ring_free_flushed(dom, queue); idx = queue_ring_add(queue); -- 2.39.5