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-rw-r--r--drivers/acpi/acpica/tbutils.c3
-rw-r--r--drivers/acpi/pci_link.c4
-rw-r--r--drivers/acpi/video.c5
-rw-r--r--drivers/cpuidle/governors/menu.c10
4 files changed, 16 insertions, 6 deletions
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
index 3a8d8d2eee9..9684cc82793 100644
--- a/drivers/acpi/acpica/tbutils.c
+++ b/drivers/acpi/acpica/tbutils.c
@@ -445,7 +445,8 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address, u8 flags)
/* Differentiate between RSDT and XSDT root tables */
- if (rsdp->revision > 1 && rsdp->xsdt_physical_address) {
+ if (rsdp->revision > 1 && rsdp->xsdt_physical_address
+ && !acpi_rsdt_forced) {
/*
* Root table is an XSDT (64-bit physical addresses). We must use the
* XSDT if the revision is > 1 and the XSDT pointer is present, as per
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 4869fa1b789..1c6e73c7865 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -796,10 +796,6 @@ static int irqrouter_resume(struct sys_device *dev)
struct list_head *node = NULL;
struct acpi_pci_link *link = NULL;
-
- /* Make sure SCI is enabled again (Apple firmware bug?) */
- acpi_set_register(ACPI_BITREG_SCI_ENABLE, 1);
-
list_for_each(node, &acpi_link.entries) {
link = list_entry(node, struct acpi_pci_link, node);
if (!link) {
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 38bf8b43fd1..f261737636d 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -482,6 +482,7 @@ acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)
int status = AE_OK;
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list args = { 1, &arg0 };
+ int state;
arg0.integer.value = level;
@@ -490,6 +491,10 @@ acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)
status = acpi_evaluate_object(device->dev->handle, "_BCM",
&args, NULL);
device->brightness->curr = level;
+ for (state = 2; state < device->brightness->count; state++)
+ if (level == device->brightness->levels[state])
+ device->backlight->props.brightness = state - 2;
+
return status;
}
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index 8d7cf3f3145..f1df59f59a3 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -15,12 +15,14 @@
#include <linux/tick.h>
#define BREAK_FUZZ 4 /* 4 us */
+#define PRED_HISTORY_PCT 50
struct menu_device {
int last_state_idx;
unsigned int expected_us;
unsigned int predicted_us;
+ unsigned int current_predicted_us;
unsigned int last_measured_us;
unsigned int elapsed_us;
};
@@ -47,6 +49,12 @@ static int menu_select(struct cpuidle_device *dev)
data->expected_us =
(u32) ktime_to_ns(tick_nohz_get_sleep_length()) / 1000;
+ /* Recalculate predicted_us based on prediction_history_pct */
+ data->predicted_us *= PRED_HISTORY_PCT;
+ data->predicted_us += (100 - PRED_HISTORY_PCT) *
+ data->current_predicted_us;
+ data->predicted_us /= 100;
+
/* find the deepest idle state that satisfies our constraints */
for (i = CPUIDLE_DRIVER_STATE_START + 1; i < dev->state_count; i++) {
struct cpuidle_state *s = &dev->states[i];
@@ -97,7 +105,7 @@ static void menu_reflect(struct cpuidle_device *dev)
measured_us = -1;
/* Predict time until next break event */
- data->predicted_us = max(measured_us, data->last_measured_us);
+ data->current_predicted_us = max(measured_us, data->last_measured_us);
if (last_idle_us + BREAK_FUZZ <
data->expected_us - target->exit_latency) {