linux-kernel - [PATCH] PCI: dwc: fix error return code in dw_pcie_host

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Date:   Mon, 16 Nov 2020 21:50:23 +0800
From:   Wang Hai <wanghai38@...wei.com>
To:     <jingoohan1@...il.com>, <gustavo.pimentel@...opsys.com>,
        <lorenzo.pieralisi@....com>, <robh@...nel.org>,
        <bhelgaas@...gle.com>, <Jisheng.Zhang@...aptics.com>
CC:     <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] PCI: dwc: fix error return code in dw_pcie_host_init()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 07940c369a6b ("PCI: dwc: Fix MSI page leakage in suspend/resume")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Wang Hai <wanghai38@...wei.com>
---
 drivers/pci/controller/dwc/pcie-designware-host.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 44c2a6572199..7b3c91c6ae02 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -395,6 +395,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
 			if (dma_mapping_error(pci->dev, pp->msi_data)) {
 				dev_err(pci->dev, "Failed to map MSI data\n");
 				pp->msi_data = 0;
+				ret = -ENOMEM;
 				goto err_free_msi;
 			}
 		} else {
-- 
2.17.1