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authorTang Liang <liang.tang@oracle.com>2011-12-09 10:05:54 +0800
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-03-13 14:06:33 -0400
commit09f98a825a821f7a3f1b162f9ed023f37213a63b (patch)
tree37d83899ccac13fe6aa6069aecef8dd8e86d5d2a /drivers/acpi/acpica
parent805a6af8dba5dfdd35ec35dc52ec0122400b2610 (diff)
x86, acpi, tboot: Have a ACPI os prepare sleep instead of calling tboot_sleep.
The ACPI suspend path makes a call to tboot_sleep right before it writes the PM1A, PM1B values. We replace the direct call to tboot via an registration callback similar to __acpi_register_gsi. CC: Len Brown <len.brown@intel.com> Acked-by: Joseph Cihula <joseph.cihula@intel.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> [v1: Added __attribute__ ((unused))] [v2: Introduced a wrapper instead of changing tboot_sleep return values] [v3: Added return value AE_CTRL_SKIP for acpi_os_sleep_prepare] Signed-off-by: Tang Liang <liang.tang@oracle.com> [v1: Fix compile issues on IA64 and PPC64] [v2: Fix where __acpi_os_prepare_sleep==NULL and did not go in sleep properly] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/acpi/acpica')
-rw-r--r--drivers/acpi/acpica/hwsleep.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index d52da3073650..992359af7e2f 100644
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -43,9 +43,9 @@
*/
#include <acpi/acpi.h>
+#include <linux/acpi.h>
#include "accommon.h"
#include "actables.h"
-#include <linux/tboot.h>
#include <linux/module.h>
#define _COMPONENT ACPI_HARDWARE
@@ -344,8 +344,12 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
ACPI_FLUSH_CPU_CACHE();
- tboot_sleep(sleep_state, pm1a_control, pm1b_control);
-
+ status = acpi_os_prepare_sleep(sleep_state, pm1a_control,
+ pm1b_control);
+ if (ACPI_SKIP(status))
+ return_ACPI_STATUS(AE_OK);
+ if (ACPI_FAILURE(status))
+ return_ACPI_STATUS(status);
/* Write #2: Write both SLP_TYP + SLP_EN */
status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control);