[PATCH 3/3] nvme: use the DMA_ATTR_NO_WARN attribute

From: Mauricio Faria de Oliveira
Date: Mon Aug 01 2016 - 19:01:33 EST


Use the DMA_ATTR_NO_WARN attribute for the dma_map_sg() call of the nvme
driver that returns BLK_MQ_RQ_QUEUE_BUSY (not for BLK_MQ_RQ_QUEUE_ERROR).

Signed-off-by: Mauricio Faria de Oliveira <mauricfo@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxxxxxxx>
---
drivers/nvme/host/pci.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index d7c33f9..eeaeae0 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -503,7 +503,8 @@ static int nvme_map_data(struct nvme_dev *dev, struct request *req,
goto out;

ret = BLK_MQ_RQ_QUEUE_BUSY;
- if (!dma_map_sg(dev->dev, iod->sg, iod->nents, dma_dir))
+ if (!dma_map_sg_attrs(dev->dev, iod->sg, iod->nents, dma_dir,
+ DMA_ATTR_NO_WARN))
goto out;

if (!nvme_setup_prps(dev, req, size))
--
1.8.3.1