From: Colin Ian King colin.king@canonical.com
[ Upstream commit 9c2076090c2815fe7c49676df68dde7e60a9b9fc ]
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 colin.king@canonical.com Addresses-Coverity: ("Dereference null return") Link: https://lore.kernel.org/r/20210406184510.433497-1-colin.king@canonical.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/gadget/udc/r8a66597-udc.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c index 11e25a3f4f1f..a766476fd742 100644 --- a/drivers/usb/gadget/udc/r8a66597-udc.c +++ b/drivers/usb/gadget/udc/r8a66597-udc.c @@ -1852,6 +1852,8 @@ 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;