diff --git a/[refs] b/[refs]
index 73b90010bb60..da611d53ba08 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a51a69c0ed955f4fa6f64b4377378c744f9b737b
+refs/heads/master: a3c6598f92cf27d3d201a2a5b052563148156837
diff --git a/trunk/drivers/acpi/ec.c b/trunk/drivers/acpi/ec.c
index 8c5d7df7d343..874f912962c4 100644
--- a/trunk/drivers/acpi/ec.c
+++ b/trunk/drivers/acpi/ec.c
@@ -213,7 +213,7 @@ static int acpi_ec_intr_wait(union acpi_ec *ec, unsigned int event)
 
 	switch (event) {
 	case ACPI_EC_EVENT_IBE:
-		if (~acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF) {
+		if (~acpi_ec_read_status(ec) & event) {
 			ec->intr.expect_event = 0;
 			return 0;
 		}
@@ -782,15 +782,12 @@ static u32 acpi_ec_gpe_intr_handler(void *data)
 	case ACPI_EC_EVENT_OBF:
 		if (!(value & ACPI_EC_FLAG_OBF))
 			break;
-		ec->intr.expect_event = 0;
-		wake_up(&ec->intr.wait);
-		break;
 	case ACPI_EC_EVENT_IBE:
 		if ((value & ACPI_EC_FLAG_IBF))
 			break;
 		ec->intr.expect_event = 0;
 		wake_up(&ec->intr.wait);
-		break;
+		return ACPI_INTERRUPT_HANDLED;
 	default:
 		break;
 	}
diff --git a/trunk/drivers/acpi/processor_idle.c b/trunk/drivers/acpi/processor_idle.c
index 2278b21b5eb8..6d1e238e2375 100644
--- a/trunk/drivers/acpi/processor_idle.c
+++ b/trunk/drivers/acpi/processor_idle.c
@@ -97,9 +97,6 @@ static int set_max_cstate(struct dmi_system_id *id)
 /* Actually this shouldn't be __cpuinitdata, would be better to fix the
    callers to only run once -AK */
 static struct dmi_system_id __cpuinitdata processor_power_dmi_table[] = {
-	{ set_max_cstate, "IBM ThinkPad R40e", {
-	  DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
-	  DMI_MATCH(DMI_BIOS_VERSION,"1SET70WW")}, (void *)1},
 	{ set_max_cstate, "IBM ThinkPad R40e", {
 	  DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
 	  DMI_MATCH(DMI_BIOS_VERSION,"1SET60WW")}, (void *)1},
@@ -325,8 +322,6 @@ static void acpi_processor_idle(void)
 		cx = &pr->power.states[ACPI_STATE_C1];
 #endif
 
-	cx->usage++;
-
 	/*
 	 * Sleep:
 	 * ------
@@ -368,9 +363,7 @@ static void acpi_processor_idle(void)
 		t1 = inl(acpi_fadt.xpm_tmr_blk.address);
 		/* Invoke C2 */
 		inb(cx->address);
-		/* Dummy wait op - must do something useless after P_LVL2 read
-		   because chipsets cannot guarantee that STPCLK# signal
-		   gets asserted in time to freeze execution properly. */
+		/* Dummy op - must do something useless after P_LVL2 read */
 		t2 = inl(acpi_fadt.xpm_tmr_blk.address);
 		/* Get end time (ticks) */
 		t2 = inl(acpi_fadt.xpm_tmr_blk.address);
@@ -408,7 +401,7 @@ static void acpi_processor_idle(void)
 		t1 = inl(acpi_fadt.xpm_tmr_blk.address);
 		/* Invoke C3 */
 		inb(cx->address);
-		/* Dummy wait op (see above) */
+		/* Dummy op - must do something useless after P_LVL3 read */
 		t2 = inl(acpi_fadt.xpm_tmr_blk.address);
 		/* Get end time (ticks) */
 		t2 = inl(acpi_fadt.xpm_tmr_blk.address);
@@ -435,6 +428,9 @@ static void acpi_processor_idle(void)
 		local_irq_enable();
 		return;
 	}
+	cx->usage++;
+	if ((cx->type != ACPI_STATE_C1) && (sleep_ticks > 0))
+		cx->time += sleep_ticks;
 
 	next_state = pr->power.state;
 
@@ -1058,9 +1054,10 @@ static int acpi_processor_power_seq_show(struct seq_file *seq, void *offset)
 		else
 			seq_puts(seq, "demotion[--] ");
 
-		seq_printf(seq, "latency[%03d] usage[%08d]\n",
+		seq_printf(seq, "latency[%03d] usage[%08d] duration[%020llu]\n",
 			   pr->power.states[i].latency,
-			   pr->power.states[i].usage);
+			   pr->power.states[i].usage,
+			   pr->power.states[i].time);
 	}
 
       end:
diff --git a/trunk/include/acpi/processor.h b/trunk/include/acpi/processor.h
index 77371b3cdc44..9dd5b75961f8 100644
--- a/trunk/include/acpi/processor.h
+++ b/trunk/include/acpi/processor.h
@@ -62,6 +62,7 @@ struct acpi_processor_cx {
 	u32 latency_ticks;
 	u32 power;
 	u32 usage;
+	u64 time;
 	struct acpi_processor_cx_policy promotion;
 	struct acpi_processor_cx_policy demotion;
 };