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nvme-pci: Tidy up nvme_unmap_data

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Remove pointless local variable and use rq_dma_dir macro.

Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
This commit is contained in:
Israel Rukshin 2019-08-28 14:11:48 +03:00 • committed by Sagi Grimberg
parent e7832cb48a
commit f2fa006f81
1 changed files with 2 additions and 3 deletions
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5
drivers/nvme/host/pci.c
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@ -537,14 +537,13 @@ static inline bool nvme_pci_use_sgls(struct nvme_dev *dev, struct request *req)
static void nvme_unmap_data(struct nvme_dev *dev, struct request *req) static void nvme_unmap_data(struct nvme_dev *dev, struct request *req)
{ {
struct nvme_iod *iod = blk_mq_rq_to_pdu(req); struct nvme_iod *iod = blk_mq_rq_to_pdu(req);
enum dma_data_direction dma_dir = rq_data_dir(req) ?
DMA_TO_DEVICE : DMA_FROM_DEVICE;
const int last_prp = dev->ctrl.page_size / sizeof(__le64) - 1; const int last_prp = dev->ctrl.page_size / sizeof(__le64) - 1;
dma_addr_t dma_addr = iod->first_dma, next_dma_addr; dma_addr_t dma_addr = iod->first_dma, next_dma_addr;
int i; int i;
if (iod->dma_len) { if (iod->dma_len) {
dma_unmap_page(dev->dev, dma_addr, iod->dma_len, dma_dir); dma_unmap_page(dev->dev, dma_addr, iod->dma_len,
rq_dma_dir(req));
return; return;
} }