nvme-pci: use the same attributes when freeing host_mem_desc_bufs.

[ Upstream commit cc667f6d5de023ee131e96bb88e5cddca23272bd ]

When using HMB the PCIe host driver allocates host_mem_desc_bufs using
dma_alloc_attrs() but frees them using dma_free_coherent(). Use the
correct dma_free_attrs() function to free the buffers.

Signed-off-by: Liviu Dudau <liviu@dudau.co.uk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index d668682..40f76b4 100644 (file)
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1727,8 +1727,9 @@ static void nvme_free_host_mem(struct nvme_dev *dev)
                struct nvme_host_mem_buf_desc *desc = &dev->host_mem_descs[i];
                size_t size = le32_to_cpu(desc->size) * dev->ctrl.page_size;
 
-               dma_free_coherent(dev->dev, size, dev->host_mem_desc_bufs[i],
-                               le64_to_cpu(desc->addr));
+               dma_free_attrs(dev->dev, size, dev->host_mem_desc_bufs[i],
+                              le64_to_cpu(desc->addr),
+                              DMA_ATTR_NO_KERNEL_MAPPING | DMA_ATTR_NO_WARN);
        }
 
        kfree(dev->host_mem_desc_bufs);
@@ -1794,8 +1795,9 @@ out_free_bufs:
        while (--i >= 0) {
                size_t size = le32_to_cpu(descs[i].size) * dev->ctrl.page_size;
 
-               dma_free_coherent(dev->dev, size, bufs[i],
-                               le64_to_cpu(descs[i].addr));
+               dma_free_attrs(dev->dev, size, bufs[i],
+                              le64_to_cpu(descs[i].addr),
+                              DMA_ATTR_NO_KERNEL_MAPPING | DMA_ATTR_NO_WARN);
        }
 
        kfree(bufs);