um: Fix IPC on um

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / acpi / processor_idle.c

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 47a8caa..ad3730b 100644 (file)
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -221,10 +221,6 @@ static void lapic_timer_state_broadcast(struct acpi_processor *pr,
 
 #endif
 
-/*
- * Suspend / resume control
- */
-static int acpi_idle_suspend;
 static u32 saved_bm_rld;
 
 static void acpi_idle_bm_rld_save(void)
@@ -241,23 +237,15 @@ static void acpi_idle_bm_rld_restore(void)
                acpi_write_bit_register(ACPI_BITREG_BUS_MASTER_RLD, saved_bm_rld);
 }
 
-int acpi_processor_suspend(struct acpi_device * device, pm_message_t state)
+int acpi_processor_suspend(struct device *dev)
 {
-       if (acpi_idle_suspend == 1)
-               return 0;
-
        acpi_idle_bm_rld_save();
-       acpi_idle_suspend = 1;
        return 0;
 }
 
-int acpi_processor_resume(struct acpi_device * device)
+int acpi_processor_resume(struct device *dev)
 {
-       if (acpi_idle_suspend == 0)
-               return 0;
-
        acpi_idle_bm_rld_restore();
-       acpi_idle_suspend = 0;
        return 0;
 }
 
@@ -313,16 +301,16 @@ static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr)
        pr->power.states[ACPI_STATE_C3].address = pr->pblk + 5;
 
        /* determine latencies from FADT */
-       pr->power.states[ACPI_STATE_C2].latency = acpi_gbl_FADT.C2latency;
-       pr->power.states[ACPI_STATE_C3].latency = acpi_gbl_FADT.C3latency;
+       pr->power.states[ACPI_STATE_C2].latency = acpi_gbl_FADT.c2_latency;
+       pr->power.states[ACPI_STATE_C3].latency = acpi_gbl_FADT.c3_latency;
 
        /*
         * FADT specified C2 latency must be less than or equal to
         * 100 microseconds.
         */
-       if (acpi_gbl_FADT.C2latency > ACPI_PROCESSOR_MAX_C2_LATENCY) {
+       if (acpi_gbl_FADT.c2_latency > ACPI_PROCESSOR_MAX_C2_LATENCY) {
                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                       "C2 latency too large [%d]\n", acpi_gbl_FADT.C2latency));
+                       "C2 latency too large [%d]\n", acpi_gbl_FADT.c2_latency));
                /* invalidate C2 */
                pr->power.states[ACPI_STATE_C2].address = 0;
        }
@@ -331,9 +319,9 @@ static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr)
         * FADT supplied C3 latency must be less than or equal to
         * 1000 microseconds.
         */
-       if (acpi_gbl_FADT.C3latency > ACPI_PROCESSOR_MAX_C3_LATENCY) {
+       if (acpi_gbl_FADT.c3_latency > ACPI_PROCESSOR_MAX_C3_LATENCY) {
                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                       "C3 latency too large [%d]\n", acpi_gbl_FADT.C3latency));
+                       "C3 latency too large [%d]\n", acpi_gbl_FADT.c3_latency));
                /* invalidate C3 */
                pr->power.states[ACPI_STATE_C3].address = 0;
        }
@@ -595,7 +583,6 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
         */
        cx->valid = 1;
 
-       cx->latency_ticks = cx->latency;
        /*
         * On older chipsets, BM_RLD needs to be set
         * in order for Bus Master activity to wake the
@@ -628,7 +615,6 @@ static int acpi_processor_power_verify(struct acpi_processor *pr)
                        if (!cx->address)
                                break;
                        cx->valid = 1; 
-                       cx->latency_ticks = cx->latency; /* Normalize latency */
                        break;
 
                case ACPI_STATE_C3:
@@ -763,11 +749,6 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
 
        local_irq_disable();
 
-       if (acpi_idle_suspend) {
-               local_irq_enable();
-               cpu_relax();
-               return -EBUSY;
-       }
 
        lapic_timer_state_broadcast(pr, cx, 1);
        kt1 = ktime_get_real();
@@ -779,7 +760,6 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
        dev->last_residency = (int)idle_time;
 
        local_irq_enable();
-       cx->usage++;
        lapic_timer_state_broadcast(pr, cx, 0);
 
        return index;
@@ -838,11 +818,6 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
 
        local_irq_disable();
 
-       if (acpi_idle_suspend) {
-               local_irq_enable();
-               cpu_relax();
-               return -EBUSY;
-       }
 
        if (cx->entry_method != ACPI_CSTATE_FFH) {
                current_thread_info()->status &= ~TS_POLLING;
@@ -887,10 +862,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
        if (cx->entry_method != ACPI_CSTATE_FFH)
                current_thread_info()->status |= TS_POLLING;
 
-       cx->usage++;
-
        lapic_timer_state_broadcast(pr, cx, 0);
-       cx->time += idle_time;
        return index;
 }
 
@@ -928,8 +900,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
                                                drv, drv->safe_state_index);
                } else {
                        local_irq_disable();
-                       if (!acpi_idle_suspend)
-                               acpi_safe_halt();
+                       acpi_safe_halt();
                        local_irq_enable();
                        return -EBUSY;
                }
@@ -937,11 +908,6 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 
        local_irq_disable();
 
-       if (acpi_idle_suspend) {
-               local_irq_enable();
-               cpu_relax();
-               return -EBUSY;
-       }
 
        if (cx->entry_method != ACPI_CSTATE_FFH) {
                current_thread_info()->status &= ~TS_POLLING;
@@ -1014,10 +980,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
        if (cx->entry_method != ACPI_CSTATE_FFH)
                current_thread_info()->status |= TS_POLLING;
 
-       cx->usage++;
-
        lapic_timer_state_broadcast(pr, cx, 0);
-       cx->time += idle_time;
        return index;
 }