diff options
| author | Keith Busch <kbusch@kernel.org> | 2019-12-03 05:53:30 +0900 |
|---|---|---|
| committer | Keith Busch <kbusch@kernel.org> | 2019-12-04 00:38:06 +0900 |
| commit | f6c4d97b0d82ed1240690c91f06214018b1531ef (patch) | |
| tree | 8d58161ed9c9cb748e87f426b2531b9f115487b4 /drivers/nvme/host | |
| parent | 22802bf742c25b1e2473c70b3b99da98af65ef4d (diff) | |
nvme/pci: Remove last_cq_head
We had been saving the last_cq_head seen from an interrupt so that a
polled queue wouldn't mistakenly trigger spruious interrupt detection. We
don't poll interrupt driven queues any more, so saving this value is
pointless.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'drivers/nvme/host')
| -rw-r--r-- | drivers/nvme/host/pci.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 9d307593b94f..0590640ba62c 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -176,7 +176,6 @@ struct nvme_queue { u16 sq_tail; u16 last_sq_tail; u16 cq_head; - u16 last_cq_head; u16 qid; u8 cq_phase; u8 sqes; @@ -1026,10 +1025,7 @@ static irqreturn_t nvme_irq(int irq, void *data) * the irq handler, even if that was on another CPU. */ rmb(); - if (nvmeq->cq_head != nvmeq->last_cq_head) - ret = IRQ_HANDLED; nvme_process_cq(nvmeq, &start, &end, -1); - nvmeq->last_cq_head = nvmeq->cq_head; wmb(); if (start != end) { |