Mauricio Faria de Oliveira <mauricfo@xxxxxxxxxxxxxxxxxx> writes: > Use the DMA_ATTR_NO_WARN attribute on dma_map_sg() calls of nvme driver. > > Signed-off-by: Mauricio Faria de Oliveira <mauricfo@xxxxxxxxxxxxxxxxxx> checkpatch.pl complains about line wrapping. Other than that, this looks good to me. Reviewed-by: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxxxxxxx> > --- > drivers/nvme/host/pci.c | 10 ++++++++-- > 1 file changed, 8 insertions(+), 2 deletions(-) > > diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c > index d1a8259..c3c3348 100644 > --- a/drivers/nvme/host/pci.c > +++ b/drivers/nvme/host/pci.c > @@ -18,6 +18,7 @@ > #include <linux/blk-mq.h> > #include <linux/cpu.h> > #include <linux/delay.h> > +#include <linux/dma-attrs.h> > #include <linux/errno.h> > #include <linux/fs.h> > #include <linux/genhd.h> > @@ -65,6 +66,8 @@ MODULE_PARM_DESC(use_cmb_sqes, "use controller's memory buffer for I/O SQes"); > > static struct workqueue_struct *nvme_workq; > > +static DEFINE_DMA_ATTRS(nvme_dma_attrs); > + > struct nvme_dev; > struct nvme_queue; > > @@ -498,7 +501,7 @@ 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, &nvme_dma_attrs)) > goto out; > > if (!nvme_setup_prps(dev, req, size)) > @@ -516,7 +519,7 @@ static int nvme_map_data(struct nvme_dev *dev, struct request *req, > if (rq_data_dir(req)) > nvme_dif_remap(req, nvme_dif_prep); > > - if (!dma_map_sg(dev->dev, &iod->meta_sg, 1, dma_dir)) > + if (!dma_map_sg_attrs(dev->dev, &iod->meta_sg, 1, dma_dir, &nvme_dma_attrs)) > goto out_unmap; > } > > @@ -2118,6 +2121,9 @@ static int __init nvme_init(void) > result = pci_register_driver(&nvme_driver); > if (result) > destroy_workqueue(nvme_workq); > + > + dma_set_attr(DMA_ATTR_NO_WARN, &nvme_dma_attrs); > + > return result; > } -- Gabriel Krisman Bertazi -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
