From: Colin Ian King Date: Tue, 6 Apr 2021 18:45:10 +0000 (+0100) Subject: usb: gadget: r8a66597: Add missing null check on return from platform_get_resource X-Git-Tag: v5.13-rc1~171^2~83 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9c2076090c2815fe7c49676df68dde7e60a9b9fc;p=thirdparty%2Fkernel%2Flinux.git usb: gadget: r8a66597: Add missing null check on return from platform_get_resource The call to platform_get_resource can potentially return a NULL pointer on failure, so add this check and return -EINVAL if it fails. Fixes: c41442474a26 ("usb: gadget: R8A66597 peripheral controller support.") Signed-off-by: Colin Ian King Addresses-Coverity: ("Dereference null return") Link: https://lore.kernel.org/r/20210406184510.433497-1-colin.king@canonical.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c index 896c1a016d550..65cae48834545 100644 --- a/drivers/usb/gadget/udc/r8a66597-udc.c +++ b/drivers/usb/gadget/udc/r8a66597-udc.c @@ -1849,6 +1849,8 @@ static int r8a66597_probe(struct platform_device *pdev) return PTR_ERR(reg); ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!ires) + return -EINVAL; irq = ires->start; irq_trigger = ires->flags & IRQF_TRIGGER_MASK;