[PATCH 4.19 12/57] atm: firestream: check the return value of ioremap() in fs_init()

Greg Kroah-Hartman
2022-03-21T13:58:31Z

From: Jia-Ju Bai <baijiaju1990@gmail.com>

[ 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>
---
drivers/atm/firestream.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c
index ef395b238816..f7880012b9a0 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);

--
2.34.1