1 files changed, 4 insertions, 0 deletions

diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
index a3ddad18aaa..fa2161d5003 100644
--- a/arch/x86/kernel/acpi/sleep.c
+++ b/arch/x86/kernel/acpi/sleep.c
@@ -150,6 +150,10 @@ static int __init acpi_sleep_setup(char *str)
                         acpi_realmode_flags |= 2;
                 if (strncmp(str, "s3_beep", 7) == 0)
                         acpi_realmode_flags |= 4;
+#ifdef CONFIG_HIBERNATION
+                if (strncmp(str, "s4_nohwsig", 10) == 0)
+                        acpi_no_s4_hw_signature();
+#endif
                 if (strncmp(str, "old_ordering", 12) == 0)
                         acpi_old_suspend_ordering();
                 str = strchr(str, ',');