Merge branch 'stable/for-x86-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel...

diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c
index e2410e27f97ef94d7b87d8338b61f5b7bb87611e..6410744ac5cb7249544fb9424853b0e88f28679f 100644 (file)
--- a/arch/x86/kernel/tboot.c
+++ b/arch/x86/kernel/tboot.c
@@ -272,7 +272,7 @@ static void tboot_copy_fadt(const struct acpi_table_fadt *fadt)
                offsetof(struct acpi_table_facs, firmware_waking_vector);
 }
 
-void tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control)
+static int tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control)
 {
        static u32 acpi_shutdown_map[ACPI_S_STATE_COUNT] = {
                /* S0,1,2: */ -1, -1, -1,
@@ -281,7 +281,7 @@ void tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control)
                /* S5: */ TB_SHUTDOWN_S5 };
 
        if (!tboot_enabled())
-               return;
+               return 0;
 
        tboot_copy_fadt(&acpi_gbl_FADT);
        tboot->acpi_sinfo.pm1a_cnt_val = pm1a_control;
@@ -292,10 +292,11 @@ void tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control)
        if (sleep_state >= ACPI_S_STATE_COUNT ||
            acpi_shutdown_map[sleep_state] == -1) {
                pr_warning("unsupported sleep state 0x%x\n", sleep_state);
-               return;
+               return -1;
        }
 
        tboot_shutdown(acpi_shutdown_map[sleep_state]);
+       return 0;
 }
 
 static atomic_t ap_wfs_count;
@@ -345,6 +346,8 @@ static __init int tboot_late_init(void)
 
        atomic_set(&ap_wfs_count, 0);
        register_hotcpu_notifier(&tboot_cpu_notifier);
+
+       acpi_os_set_prepare_sleep(&tboot_sleep);
        return 0;
 }
 

diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index 3c4a922a9fc2810b607e47ffd3d799277ffcea5e..af702a7a69d9a6c9af64d762b57853630f30c979 100644 (file)
--- 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);

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 412a1e04a9226a84970654c433597455cb53f0ca..17516ad599372e4736cf8ffdf2d124d4854a3713 100644 (file)
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -77,6 +77,9 @@ EXPORT_SYMBOL(acpi_in_debugger);
 extern char line_buf[80];
 #endif                         /*ENABLE_DEBUGGER */
 
+static int (*__acpi_os_prepare_sleep)(u8 sleep_state, u32 pm1a_ctrl,
+                                     u32 pm1b_ctrl);
+
 static acpi_osd_handler acpi_irq_handler;
 static void *acpi_irq_context;
 static struct workqueue_struct *kacpid_wq;
@@ -1641,3 +1644,24 @@ acpi_status acpi_os_terminate(void)
 
        return AE_OK;
 }
+
+acpi_status acpi_os_prepare_sleep(u8 sleep_state, u32 pm1a_control,
+                                 u32 pm1b_control)
+{
+       int rc = 0;
+       if (__acpi_os_prepare_sleep)
+               rc = __acpi_os_prepare_sleep(sleep_state,
+                                            pm1a_control, pm1b_control);
+       if (rc < 0)
+               return AE_ERROR;
+       else if (rc > 0)
+               return AE_CTRL_SKIP;
+
+       return AE_OK;
+}
+
+void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
+                              u32 pm1a_ctrl, u32 pm1b_ctrl))
+{
+       __acpi_os_prepare_sleep = func;
+}

diff --git a/include/acpi/acexcep.h b/include/acpi/acexcep.h
index 5b6c391efc8e658adba3eac683f46ea3938495ab..fa0d22ce089e202bff550af19f004fa0002f2c7a 100644 (file)
--- a/include/acpi/acexcep.h
+++ b/include/acpi/acexcep.h
@@ -57,6 +57,7 @@
 #define ACPI_SUCCESS(a)                 (!(a))
 #define ACPI_FAILURE(a)                 (a)
 
+#define ACPI_SKIP(a)                    (a == AE_CTRL_SKIP)
 #define AE_OK                           (acpi_status) 0x0000
 
 /*

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 3f968665899b9cadeef825dab03666d04eac3c64..104eda758e7f27dacb9446a33c7f26dde31c2493 100644 (file)
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -371,4 +371,14 @@ static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
 
 #endif /* !CONFIG_ACPI */
 
+#ifdef CONFIG_ACPI
+void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
+                              u32 pm1a_ctrl,  u32 pm1b_ctrl));
+
+acpi_status acpi_os_prepare_sleep(u8 sleep_state,
+                                 u32 pm1a_control, u32 pm1b_control);
+#else
+#define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0)
+#endif
+
 #endif /*_LINUX_ACPI_H*/

diff --git a/include/linux/tboot.h b/include/linux/tboot.h
index 1dba6ee55203fec99992d211eb169938fcec918e..c75128bed5fa39116952fd148ff01374993b8f44 100644 (file)
--- a/include/linux/tboot.h
+++ b/include/linux/tboot.h
@@ -143,7 +143,6 @@ static inline int tboot_enabled(void)
 
 extern void tboot_probe(void);
 extern void tboot_shutdown(u32 shutdown_type);
-extern void tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control);
 extern struct acpi_table_header *tboot_get_dmar_table(
                                      struct acpi_table_header *dmar_tbl);
 extern int tboot_force_iommu(void);