[PATCH] nvme-pci: fix psdt field for single segment sgls

From: Klaus Birkelund Jensen
Date: Tue Apr 30 2019 - 13:02:47 EST


The shortcut for single segment SGL requests did not set the PSDT field
to mark the request as using SGLs.

Fixes: 297910571f08 ("nvme-pci: optimize mapping single segment requests using SGLs")
Signed-off-by: Klaus Birkelund Jensen <klaus.jensen@xxxxxxxxxxxx>
---
drivers/nvme/host/pci.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index c1eecde6b853..efc1da56521c 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -830,6 +830,7 @@ static blk_status_t nvme_setup_sgl_simple(struct nvme_dev *dev,
return BLK_STS_RESOURCE;
iod->dma_len = bv->bv_len;

+ cmnd->flags = NVME_CMD_SGL_METABUF;
cmnd->dptr.sgl.addr = cpu_to_le64(iod->first_dma);
cmnd->dptr.sgl.length = cpu_to_le32(iod->dma_len);
cmnd->dptr.sgl.type = NVME_SGL_FMT_DATA_DESC << 4;
--
2.21.0