arch/tile: avoid __must_check warning on one strict_strtol check

For the "initfree" boot argument it's not that big a deal, but
to avoid warnings in the code, we check for a valid value before
allowing the specified argument to override the kernel default.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c
index 78e1982cb6c9..0b9ce69b0ee5 100644
--- a/arch/tile/mm/init.c
+++ b/arch/tile/mm/init.c
@@ -988,8 +988,12 @@ static long __write_once initfree = 1;
 /* Select whether to free (1) or mark unusable (0) the __init pages. */
 static int __init set_initfree(char *str)
 {
-        strict_strtol(str, 0, &initfree);
-        pr_info("initfree: %s free init pages\n", initfree ? "will" : "won't");
+        long val;
+        if (strict_strtol(str, 0, &val)) {
+                initfree = val;
+                pr_info("initfree: %s free init pages\n",
+                        initfree ? "will" : "won't");
+        }
         return 1;
 }
 __setup("initfree=", set_initfree);