lib/vsprintf: do not show no_hash_pointers message multiple times

Do not show no_hash_pointers message multiple times if the option was
passed more than once (e.g. via generated command line).

Signed-off-by: Marco Elver <elver@google.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20210305194206.3165917-1-elver@google.com

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 41ddc353ebb8220b2aa9e9071d4205bca9ed5187..4a14889ccb35df4cf048fdc471046b7cd912f4f9 100644 (file)
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -2096,6 +2096,9 @@ EXPORT_SYMBOL_GPL(no_hash_pointers);
 
 static int __init no_hash_pointers_enable(char *str)
 {
+       if (no_hash_pointers)
+               return 0;
+
        no_hash_pointers = true;
 
        pr_warn("**********************************************************\n");