The return value of platform_get_resource() needs to be checked.
To avoid use of error pointer in case that there is no suitable resource.
Fixes: 4808a1c02611 ("[PATCH] USB: Add isp116x-hcd USB host controller driver")
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
---
Changelog:
v2 -> v3
*Change 1. Correct the commit message.
*CHange 2. Change the return code.
---
drivers/usb/host/isp116x-hcd.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index 8835f6bd528e..addd2b43a14c 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -1541,9 +1541,15 @@ static int isp116x_remove(struct platform_device *pdev)
iounmap(isp116x->data_reg);
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (!res)
+ return -ENODEV;
+
release_mem_region(res->start, 2);
iounmap(isp116x->addr_reg);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+
release_mem_region(res->start, 2);
usb_put_hcd(hcd);
--
2.25.1
