ipc: introduce obtaining a lockless ipc object

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / percpu.c

diff --git a/mm/percpu.c b/mm/percpu.c
index ec25896..8c8e08f 100644 (file)
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1380,6 +1380,9 @@ enum pcpu_fc pcpu_chosen_fc __initdata = PCPU_FC_AUTO;
 
 static int __init percpu_alloc_setup(char *str)
 {
+       if (!str)
+               return -EINVAL;
+
        if (0)
                /* nada */;
 #ifdef CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK