Register for the extended sleep callback from acpi. As tboot currently does not support the reduced hardware sleep interface, fail this extended call.
Signed-off-by: Jan Beulich <[email protected]> Signed-off-by: Ben Guthro <[email protected]> Cc: [email protected] Cc: Gang Wei <[email protected]> Reviewed-by: Konrad Rzeszutek Wilk <[email protected]> --- arch/x86/kernel/tboot.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c index addf7b5..760f431 100644 --- a/arch/x86/kernel/tboot.c +++ b/arch/x86/kernel/tboot.c @@ -301,6 +301,17 @@ static int tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control) return 0; } +static int tboot_extended_sleep(u8 sleep_state, u32 val_a, u32 val_b) +{ + if (!tboot_enabled()) + return 0; + + pr_warning("tboot is not able to suspend on platforms with" + " reduced hardware sleep (ACPIv5). Please contact" + " [email protected] mailing list."); + return -1; +} + static atomic_t ap_wfs_count; static int tboot_wait_for_aps(int num_aps) @@ -422,6 +433,7 @@ static __init int tboot_late_init(void) #endif acpi_os_set_prepare_sleep(&tboot_sleep); + acpi_os_set_prepare_extended_sleep(&tboot_extended_sleep); return 0; } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
