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[v4,4/5] x86/tboot: Fail extended mode reduced hardware sleep

Message ID 1372345323-9266-5-git-send-email-benjamin.guthro@citrix.com (mailing list archive)
State Superseded, archived
Headers show

Commit Message

Ben Guthro June 27, 2013, 3:02 p.m. UTC 
As tboot currently does not support the reduced hardware sleep
interface, fail this extended call.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Ben Guthro <benjamin.guthro@citrix.com>
Cc: tboot-devel@lists.sourceforge.net
Cc: Gang Wei <gang.wei@intel.com>
---
 arch/x86/kernel/tboot.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c
index f84fe00..57383b2 100644
--- a/arch/x86/kernel/tboot.c
+++ b/arch/x86/kernel/tboot.c
@@ -273,7 +273,8 @@  static void tboot_copy_fadt(const struct acpi_table_fadt *fadt)
 		offsetof(struct acpi_table_facs, firmware_waking_vector);
 }
 
-static int tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control)
+static int tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control,
+		       bool extended)
 {
 	static u32 acpi_shutdown_map[ACPI_S_STATE_COUNT] = {
 		/* S0,1,2: */ -1, -1, -1,
@@ -284,6 +285,9 @@  static int tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control)
 	if (!tboot_enabled())
 		return 0;
 
+	if (extended)
+		return -1;
+
 	tboot_copy_fadt(&acpi_gbl_FADT);
 	tboot->acpi_sinfo.pm1a_cnt_val = pm1a_control;
 	tboot->acpi_sinfo.pm1b_cnt_val = pm1b_control;