Commit 63f98153 authored by Yang Yingliang's avatar Yang Yingliang Committed by Shawn Guo
Browse files

soc: fsl: guts: check return value after calling of_iomap() in fsl_guts_get_soc_uid() 



of_iomap() may return NULL, so we need check the return value.

Reported-by: default avatarHulk Robot <hulkci@huawei.com>
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: default avatarMichael Walle <michael@walle.cc>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent edf12b91

drivers/soc/fsl/guts.c

+4 −0
Original line number Diff line number Diff line
@@ -126,6 +126,10 @@ static u64 fsl_guts_get_soc_uid(const char *compat, unsigned int offset) 
		return 0;



	sfp_base = of_iomap(np, 0);

	if (!sfp_base) {

		of_node_put(np);

		return 0;

	}



	uid = ioread32(sfp_base + offset);

	uid <<= 32;