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PCI: dwc: Fix setting error return on MSI DMA mapping failure
[ Upstream commit88557685cd
] When dma_mapping_error() returns error because of no enough memory, but dw_pcie_host_init() returns success, which will mislead the callers. Link: https://lore.kernel.org/r/30170911-0e2f-98ce-9266-70465b9073e5@huawei.com Fixes:07940c369a
("PCI: dwc: Fix MSI page leakage in suspend/resume") Signed-off-by: Jianrong Zhang <zhangjianrong5@huawei.com> Signed-off-by: Jiantao Zhang <water.zhangjiantao@huawei.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 2 additions and 1 deletions
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@ -380,7 +380,8 @@ int dw_pcie_host_init(struct pcie_port *pp)
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sizeof(pp->msi_msg),
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DMA_FROM_DEVICE,
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DMA_ATTR_SKIP_CPU_SYNC);
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if (dma_mapping_error(pci->dev, pp->msi_data)) {
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ret = dma_mapping_error(pci->dev, pp->msi_data);
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if (ret) {
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dev_err(pci->dev, "Failed to map MSI data\n");
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pp->msi_data = 0;
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goto err_free_msi;
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