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[5.10,14/23] atm: firestream: check the return value of ioremap() in fs_init()

Message ID 20220317124526.374629426@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

gregkh@linuxfoundation.org March 17, 2022, 12:45 p.m. UTC 
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(+)
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Patch

diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c
index 0ddd611b4277..43a34aee33b8 100644
--- a/drivers/atm/firestream.c
+++ b/drivers/atm/firestream.c
@@ -1675,6 +1675,8 @@  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);