From: Jia-Ju Bai <baijiaju1990@gmail.com>
Date: Fri, 25 Feb 2022 12:52:30 +0000 (-0800)
Subject: atm: firestream: check the return value of ioremap() in fs_init()
X-Git-Tag: v4.19.236~46
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ebaa6c0e1bb18bd9d5bd26d0b1aae22d6d0f0915;p=thirdparty%2Fkernel%2Fstable.git

atm: firestream: check the return value of ioremap() in fs_init()

[ Upstream commit d4e26aaea7f82ba884dcb4acfe689406bc092dc3 ]

The function ioremap() in fs_init() can fail, so its return value should
be checked.

Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c
index ef395b238816c..f7880012b9a01 100644
--- a/drivers/atm/firestream.c
+++ b/drivers/atm/firestream.c
@@ -1692,6 +1692,8 @@ static int fs_init(struct fs_dev *dev)
 	dev->hw_base = pci_resource_start(pci_dev, 0);
 
 	dev->base = ioremap(dev->hw_base, 0x1000);
+	if (!dev->base)
+		return 1;
 
 	reset_chip (dev);