linux-kernel - [PATCH -next] tty: Fix a possible resource leak in icom

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Date:   Tue, 29 Mar 2022 16:46:12 +0800
From:   Huang Guobin <huangguobin4@...wei.com>
To:     <gregkh@...uxfoundation.org>, <jirislaby@...nel.org>
CC:     <linux-serial@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH -next] tty: Fix a possible resource leak in icom_probe

When pci_read_config_dword failed, call pci_release_regions() and
pci_disable_device() to recycle the resource previously allocated.

Signed-off-by: Huang Guobin <huangguobin4@...wei.com>
---
 drivers/tty/serial/icom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/icom.c b/drivers/tty/serial/icom.c
index 03a2fe9f4c9a..02b375ba2f07 100644
--- a/drivers/tty/serial/icom.c
+++ b/drivers/tty/serial/icom.c
@@ -1501,7 +1501,7 @@ static int icom_probe(struct pci_dev *dev,
 	retval = pci_read_config_dword(dev, PCI_COMMAND, &command_reg);
 	if (retval) {
 		dev_err(&dev->dev, "PCI Config read FAILED\n");
-		return retval;
+		goto probe_exit0;
 	}
 
 	pci_write_config_dword(dev, PCI_COMMAND,
-- 
2.25.1