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Commit 750dde44 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Keith Busch
Browse files

nvme-pci: simplify nvme_cqe_valid 



We always look at the current CQ head and phase, so don't pass these
as separate arguments, and rename the function to nvme_cqe_pending.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 287a63eb

drivers/nvme/host/pci.c

+6 −6
Original line number Diff line number Diff line
@@ -915,10 +915,10 @@ static void nvme_pci_complete_rq(struct request *req) 
}



/* We read the CQE phase first to check if the rest of the entry is valid */

static inline bool nvme_cqe_valid(struct nvme_queue *nvmeq, u16 head,

		u16 phase)

static inline bool nvme_cqe_pending(struct nvme_queue *nvmeq)

{

	return (le16_to_cpu(nvmeq->cqes[head].status) & 1) == phase;

	return (le16_to_cpu(nvmeq->cqes[nvmeq->cq_head].status) & 1) ==

			nvmeq->cq_phase;

}



static inline void nvme_ring_cq_doorbell(struct nvme_queue *nvmeq)
@@ -965,7 +965,7 @@ static inline void nvme_handle_cqe(struct nvme_queue *nvmeq, 
static inline bool nvme_read_cqe(struct nvme_queue *nvmeq,

		struct nvme_completion *cqe)

{

	if (nvme_cqe_valid(nvmeq, nvmeq->cq_head, nvmeq->cq_phase)) {

	if (nvme_cqe_pending(nvmeq)) {

		*cqe = nvmeq->cqes[nvmeq->cq_head];



		if (++nvmeq->cq_head == nvmeq->q_depth) {
@@ -1006,7 +1006,7 @@ static irqreturn_t nvme_irq(int irq, void *data) 
static irqreturn_t nvme_irq_check(int irq, void *data)

{

	struct nvme_queue *nvmeq = data;

	if (nvme_cqe_valid(nvmeq, nvmeq->cq_head, nvmeq->cq_phase))

	if (nvme_cqe_pending(nvmeq))

		return IRQ_WAKE_THREAD;

	return IRQ_NONE;

}
@@ -1016,7 +1016,7 @@ static int __nvme_poll(struct nvme_queue *nvmeq, unsigned int tag) 
	struct nvme_completion cqe;

	int found = 0, consumed = 0;



	if (!nvme_cqe_valid(nvmeq, nvmeq->cq_head, nvmeq->cq_phase))

	if (!nvme_cqe_pending(nvmeq))

		return 0;



	spin_lock_irq(&nvmeq->q_lock);