linux-kernel - [PATCH 5.7 033/376] rtw88: fix an issue about leak system resources

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Message-Id: <20200619141711.920673038@linuxfoundation.org>
Date:   Fri, 19 Jun 2020 16:29:11 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Dejin Zheng <zhengdejin5@...il.com>,
        Yan-Hsuan Chuang <yhchuang@...ltek.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.7 033/376] rtw88: fix an issue about leak system resources

From: Dejin Zheng <zhengdejin5@...il.com>

[ Upstream commit 191f6b08bfef24e1a9641eaac96ed030a7be4599 ]

the related system resources were not released when pci_iomap() return
error in the rtw_pci_io_mapping() function. add pci_release_regions() to
fix it.

Fixes: e3037485c68ec1a ("rtw88: new Realtek 802.11ac driver")
Cc: Andy Shevchenko <andy.shevchenko@...il.com>
Signed-off-by: Dejin Zheng <zhengdejin5@...il.com>
Acked-by: Yan-Hsuan Chuang <yhchuang@...ltek.com>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Link: https://lore.kernel.org/r/20200504083442.3033-1-zhengdejin5@gmail.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/realtek/rtw88/pci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/realtek/rtw88/pci.c b/drivers/net/wireless/realtek/rtw88/pci.c
index 1af87eb2e53a..d735f3127fe8 100644
--- a/drivers/net/wireless/realtek/rtw88/pci.c
+++ b/drivers/net/wireless/realtek/rtw88/pci.c
@@ -1091,6 +1091,7 @@ static int rtw_pci_io_mapping(struct rtw_dev *rtwdev,
 	len = pci_resource_len(pdev, bar_id);
 	rtwpci->mmap = pci_iomap(pdev, bar_id, len);
 	if (!rtwpci->mmap) {
+		pci_release_regions(pdev);
 		rtw_err(rtwdev, "failed to map pci memory\n");
 		return -ENOMEM;
 	}
-- 
2.25.1