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Date: Mon, 18 Feb 2019 14:42:27 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Liviu Dudau <liviu@...au.co.uk>, Christoph Hellwig <hch@....de>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 4.20 24/92] nvme-pci: use the same attributes when freeing host_mem_desc_bufs. 4.20-stable review patch. If anyone has any objections, please let me know. ------------------ [ 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@...au.co.uk> Signed-off-by: Christoph Hellwig <hch@....de> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/nvme/host/pci.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index c33bb201b884..0f45868e8af9 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -1748,8 +1748,9 @@ 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); @@ -1815,8 +1816,9 @@ static int __nvme_alloc_host_mem(struct nvme_dev *dev, u64 preferred, 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); -- 2.19.1
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