diff options
| author | Zhen Ni <nizhen@uniontech.com> | 2022-03-02 11:37:16 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-21 19:02:59 +0200 |
| commit | 134a3408c2d3f7e23eb0e4556e0a2d9f36c2614e (patch) | |
| tree | b5e43891f0d0fa248393ee1ad2e7193216d01441 | |
| parent | 5bf4b20dc19090fef115f20d63d0adc6267d2928 (diff) | |
USB: host: isp116x: check return value after calling platform_get_resource()
It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.
Signed-off-by: Zhen Ni <nizhen@uniontech.com>
Link: https://lore.kernel.org/r/20220302033716.31272-1-nizhen@uniontech.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/host/isp116x-hcd.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c index 8835f6bd528e..8c7f0991c21b 100644 --- a/drivers/usb/host/isp116x-hcd.c +++ b/drivers/usb/host/isp116x-hcd.c @@ -1541,10 +1541,12 @@ static int isp116x_remove(struct platform_device *pdev) iounmap(isp116x->data_reg); res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - release_mem_region(res->start, 2); + if (res) + release_mem_region(res->start, 2); iounmap(isp116x->addr_reg); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, 2); + if (res) + release_mem_region(res->start, 2); usb_put_hcd(hcd); return 0; |