Re: [PATCH 1/5] powerpc/pseries: extract of_helpers module

Hi Andy,

On Tue, Aug 04, 2015 at 05:36:45PM +0300, Andy Shevchenko wrote:

+struct device_node *pseries_of_derive_parent(const char *path)
+{
+	struct device_node *parent = NULL;
+	char *parent_path = "/";
+	size_t parent_path_len = strrchr(path, '/') - path + 1;
+
+	/* reject if path is "/" */
+	if (!strcmp(path, "/"))
+		return ERR_PTR(-EINVAL);
+
+	if (strrchr(path, '/') != path) {
+		parent_path = kmalloc(parent_path_len, GFP_KERNEL);

If path doesn't contain any slash this will do interesting things;
you might want to fix that too while you're at it :-)


Segher