add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/kernel/printk/braille.c
..
..
@@ -11,11 +11,18 @@
11
11
 
12
12
 int _braille_console_setup(char **str, char **brl_options)
13
13
 {
14
-	if (!strncmp(*str, "brl,", 4)) {
14
+	size_t len;
15
+
16
+	len = str_has_prefix(*str, "brl,");
17
+	if (len) {
15
18
 		*brl_options = "";
16
-		*str += 4;
17
-	} else if (!strncmp(*str, "brl=", 4)) {
18
-		*brl_options = *str + 4;
19
+		*str += len;
20
+		return 0;
21
+	}
22
+
23
+	len = str_has_prefix(*str, "brl=");
24
+	if (len) {
25
+		*brl_options = *str + len;
19
26
 		*str = strchr(*brl_options, ',');
20
27
 		if (!*str) {
21
28
 			pr_err("need port name after brl=\n");