xtensa: ISS: don't allocate memory in platform_setup

commit ef439d49 upstream.

Memory allocator is not initialized at that point yet, use static array
instead.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/xtensa/platforms/iss/setup.c

@@ -78,12 +78,16 @@ static struct notifier_block iss_panic_block = {
 
 void __init platform_setup(char **p_cmdline)
 {
+	static void *argv[COMMAND_LINE_SIZE / sizeof(void *)] __initdata;
+	static char cmdline[COMMAND_LINE_SIZE] __initdata;
 	int argc = simc_argc();
 	int argv_size = simc_argv_size();
 
 	if (argc > 1) {
-		void **argv = alloc_bootmem(argv_size);
-		char *cmdline = alloc_bootmem(argv_size);
+		if (argv_size > sizeof(argv)) {
+			pr_err("%s: command line too long: argv_size = %d\n",
+			       __func__, argv_size);
+		} else {
 			int i;
 
 			cmdline[0] = 0;
@@ -96,6 +100,7 @@ void __init platform_setup(char **p_cmdline)
 			}
 			*p_cmdline = cmdline;
 		}
+	}
 
 	atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
 }