Messages in this thread Patch in this message | | | From | Jiasheng Jiang <> | Subject | [PATCH v2] USB: host: Check for null res pointer | Date | Mon, 20 Dec 2021 23:15:24 +0800 |
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The return value of platform_get_resource() needs to be checked. To avoid use of error pointer in case of the failure of alloc.
Fixes: 4808a1c02611 ("[PATCH] USB: Add isp116x-hcd USB host controller driver") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> --- Changelog:
v1 -> v2
*Change 1. Just skip the use of null pointer instead of directly return. --- drivers/usb/host/isp116x-hcd.c | 6 ++++-- 1 file 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; -- 2.25.1
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