Merge branch 'for-next/state'

2 files changed, 23 insertions, 1 deletions

diff --git a/lib/parameter.c b/lib/parameter.c
index 60642f001b..b23885958b 100644
--- a/lib/parameter.c
+++ b/lib/parameter.c
@@ -233,7 +233,7 @@ static int param_string_set(struct device_d *dev, struct param_d *p, const char
 	char *value_save = *ps->value;
 
 	if (!val)
-		return -EINVAL;
+		val = "";
 
 	*ps->value = xstrdup(val);
 
diff --git a/lib/xfuncs.c b/lib/xfuncs.c
index 0e78b670a5..f0219c43a5 100644
--- a/lib/xfuncs.c
+++ b/lib/xfuncs.c
@@ -63,6 +63,28 @@ char *xstrdup(const char *s)
 }
 EXPORT_SYMBOL(xstrdup);
 
+char *xstrndup(const char *s, size_t n)
+{
+	int m;
+	char *t;
+
+	/* We can just xmalloc(n+1) and strncpy into it, */
+	/* but think about xstrndup("abc", 10000) wastage! */
+	m = n;
+	t = (char*) s;
+	while (m) {
+		if (!*t) break;
+		m--;
+		t++;
+	}
+	n -= m;
+	t = xmalloc(n + 1);
+	t[n] = '\0';
+
+	return memcpy(t, s, n);
+}
+EXPORT_SYMBOL(xstrndup);
+
 void* xmemalign(size_t alignment, size_t bytes)
 {
 	void *p = memalign(alignment, bytes);