From: Huang Guobin <huangguobin4@huawei.com>
Date: Thu, 31 Mar 2022 09:10:05 +0000 (+0800)
Subject: tty: Fix a possible resource leak in icom_probe
X-Git-Tag: v4.19.247~38
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=a2df0b4d080cc770b4da7bff487048c803dfd07e;p=thirdparty%2Fkernel%2Fstable.git

tty: Fix a possible resource leak in icom_probe

[ Upstream commit ee157a79e7c82b01ae4c25de0ac75899801f322c ]

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

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Huang Guobin <huangguobin4@huawei.com>
Link: https://lore.kernel.org/r/20220331091005.3290753-1-huangguobin4@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/tty/serial/icom.c b/drivers/tty/serial/icom.c
index ad374f7c476d2..cb950c78d66d8 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,