Commit a39ff4a4 authored by Yang Yingliang's avatar Yang Yingliang Committed by David S. Miller
Browse files

net: w5100: 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: default avatarYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 464a5728

drivers/net/ethernet/wiznet/w5100.c

+2 −0
Original line number Diff line number Diff line
@@ -1047,6 +1047,8 @@ static int w5100_mmio_probe(struct platform_device *pdev) 
		mac_addr = data->mac_addr;



	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!mem)

		return -EINVAL;

	if (resource_size(mem) < W5100_BUS_DIRECT_SIZE)

		ops = &w5100_mmio_indirect_ops;

	else