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-rw-r--r--drivers/acpi/reboot.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/acpi/reboot.c b/drivers/acpi/reboot.c
index 4870aaaa2ae1..a6c77e8b37bd 100644
--- a/drivers/acpi/reboot.c
+++ b/drivers/acpi/reboot.c
@@ -15,6 +15,11 @@ void acpi_reboot(void)
rr = &acpi_gbl_FADT.reset_register;
+ /* ACPI reset register was only introduced with v2 of the FADT */
+
+ if (acpi_gbl_FADT.header.revision < 2)
+ return;
+
/* Is the reset register supported? The spec says we should be
* checking the bit width and bit offset, but Windows ignores
* these fields */