linux-kernel - [PATCH] wifi: ath10k: Fix resource leak in ath10k_pci

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Date:   Tue, 8 Nov 2022 21:38:58 +0800
From:   Xiu Jianfeng <xiujianfeng@...wei.com>
To:     <kvalo@...nel.org>, <davem@...emloft.net>, <edumazet@...gle.com>,
        <kuba@...nel.org>, <pabeni@...hat.com>, <rmani@....qualcomm.com>
CC:     <ath10k@...ts.infradead.org>, <linux-wireless@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] wifi: ath10k: Fix resource leak in ath10k_pci_init()

When ath10k_ahb_init() fails, it does not unregister ath10k_pci_driver,
which will cause a resource leak issue, call pci_unregister_driver() in
the error path to fix this issue.

Fixes: 0b523ced9a3c ("ath10k: add basic skeleton to support ahb")
Signed-off-by: Xiu Jianfeng <xiujianfeng@...wei.com>
---
 drivers/net/wireless/ath/ath10k/pci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c
index e56c6a6b1379..22f8f8b20762 100644
--- a/drivers/net/wireless/ath/ath10k/pci.c
+++ b/drivers/net/wireless/ath/ath10k/pci.c
@@ -3800,8 +3800,10 @@ static int __init ath10k_pci_init(void)
 		       ret);
 
 	ret = ath10k_ahb_init();
-	if (ret)
+	if (ret) {
 		printk(KERN_ERR "ahb init failed: %d\n", ret);
+		pci_unregister_driver(&ath10k_pci_driver);
+	}
 
 	return ret;
 }
-- 
2.17.1