linux-kernel - [PATCH 4.19 202/264] NTB: hw: amd: fix an issue about leak system resources

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Date:   Tue, 27 Oct 2020 14:54:20 +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, Kaige Li <likaige@...ngson.cn>,
        Jon Mason <jdmason@...zu.us>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 202/264] NTB: hw: amd: fix an issue about leak system resources

From: Kaige Li <likaige@...ngson.cn>

[ Upstream commit 44a0a3c17919db1498cebb02ecf3cf4abc1ade7b ]

The related system resources were not released when pci_set_dma_mask(),
pci_set_consistent_dma_mask(), or pci_iomap() return error in the
amd_ntb_init_pci() function. Add pci_release_regions() to fix it.

Fixes: a1b3695820aa ("NTB: Add support for AMD PCI-Express Non-Transparent Bridge")
Signed-off-by: Kaige Li <likaige@...ngson.cn>
Signed-off-by: Jon Mason <jdmason@...zu.us>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/ntb/hw/amd/ntb_hw_amd.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c
index efb214fc545a2..0b1fbb5dba9b6 100644
--- a/drivers/ntb/hw/amd/ntb_hw_amd.c
+++ b/drivers/ntb/hw/amd/ntb_hw_amd.c
@@ -1036,6 +1036,7 @@ static int amd_ntb_init_pci(struct amd_ntb_dev *ndev,
 
 err_dma_mask:
 	pci_clear_master(pdev);
+	pci_release_regions(pdev);
 err_pci_regions:
 	pci_disable_device(pdev);
 err_pci_enable:
-- 
2.25.1