Commit f1fe19c2 authored by Yang Yingliang's avatar Yang Yingliang Committed by David S. Miller
Browse files

net: mscc: ocelot: 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>
Reviewed-by: default avatarVladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7cf6f56d

drivers/net/dsa/ocelot/seville_vsc9953.c

+5 −0
Original line number Diff line number Diff line
@@ -1206,6 +1206,11 @@ static int seville_probe(struct platform_device *pdev) 
	felix->info = &seville_info_vsc9953;



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!res) {

		err = -EINVAL;

		dev_err(&pdev->dev, "Invalid resource\n");

		goto err_alloc_felix;

	}

	felix->switch_base = res->start;



	ds = kzalloc(sizeof(struct dsa_switch), GFP_KERNEL);