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usb: dwc2: check return value after calling platform_get_resource()

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It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210831084236.1359677-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yang Yingliang 2021-08-31 16:42:36 +08:00 committed by Greg Kroah-Hartman
parent b69ec50b3e
commit 856e6e8e0f
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/dwc2/hcd.c
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@ -5191,6 +5191,10 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg)
hcd->has_tt = 1;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
retval = -EINVAL;
goto error1;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);