The reset register was only introduced with version 2 of the FADT, so we should check that the FADT revision before trusting its contents. Signed-off-by: Matthew Garrett <mjg@xxxxxxxxxx> --- drivers/acpi/reboot.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/drivers/acpi/reboot.c b/drivers/acpi/reboot.c index 4870aaa..a6c77e8b 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 */ -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
