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-rw-r--r--drivers/acpi/ec.c6
-rw-r--r--drivers/acpi/executer/exregion.c5
-rw-r--r--drivers/acpi/fan.c30
-rw-r--r--drivers/acpi/processor_core.c37
-rw-r--r--drivers/acpi/processor_idle.c10
-rw-r--r--drivers/acpi/video.c3
6 files changed, 56 insertions, 35 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 7222a18a0319..caf873c14bfb 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -943,7 +943,11 @@ int __init acpi_ec_ecdt_probe(void)
boot_ec->command_addr = ecdt_ptr->control.address;
boot_ec->data_addr = ecdt_ptr->data.address;
boot_ec->gpe = ecdt_ptr->gpe;
- boot_ec->handle = ACPI_ROOT_OBJECT;
+ if (ACPI_FAILURE(acpi_get_handle(NULL, ecdt_ptr->id,
+ &boot_ec->handle))) {
+ pr_info("Failed to locate handle for boot EC\n");
+ boot_ec->handle = ACPI_ROOT_OBJECT;
+ }
} else {
/* This workaround is needed only on some broken machines,
* which require early EC, but fail to provide ECDT */
diff --git a/drivers/acpi/executer/exregion.c b/drivers/acpi/executer/exregion.c
index 2e9ce94798c7..3f51b7e84a17 100644
--- a/drivers/acpi/executer/exregion.c
+++ b/drivers/acpi/executer/exregion.c
@@ -338,6 +338,7 @@ acpi_ex_pci_config_space_handler(u32 function,
acpi_status status = AE_OK;
struct acpi_pci_id *pci_id;
u16 pci_register;
+ u32 value32;
ACPI_FUNCTION_TRACE(ex_pci_config_space_handler);
@@ -364,9 +365,9 @@ acpi_ex_pci_config_space_handler(u32 function,
switch (function) {
case ACPI_READ:
- *value = 0;
status = acpi_os_read_pci_configuration(pci_id, pci_register,
- value, bit_width);
+ &value32, bit_width);
+ *value = value32;
break;
case ACPI_WRITE:
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 48cb705b274a..c8e3cba423ef 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -256,22 +256,28 @@ static int acpi_fan_add(struct acpi_device *device)
cdev = thermal_cooling_device_register("Fan", device,
&fan_cooling_ops);
- if (cdev)
+ if (IS_ERR(cdev)) {
+ result = PTR_ERR(cdev);
+ goto end;
+ }
+ if (cdev) {
printk(KERN_INFO PREFIX
"%s is registered as cooling_device%d\n",
device->dev.bus_id, cdev->id);
- else
- goto end;
- acpi_driver_data(device) = cdev;
- result = sysfs_create_link(&device->dev.kobj, &cdev->device.kobj,
- "thermal_cooling");
- if (result)
- return result;
- result = sysfs_create_link(&cdev->device.kobj, &device->dev.kobj,
- "device");
- if (result)
- return result;
+ acpi_driver_data(device) = cdev;
+ result = sysfs_create_link(&device->dev.kobj,
+ &cdev->device.kobj,
+ "thermal_cooling");
+ if (result)
+ return result;
+
+ result = sysfs_create_link(&cdev->device.kobj,
+ &device->dev.kobj,
+ "device");
+ if (result)
+ return result;
+ }
result = acpi_fan_add_fs(device);
if (result)
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 923fddb2caa3..a3cc8a98255c 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -670,21 +670,26 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
pr->cdev = thermal_cooling_device_register("Processor", device,
&processor_cooling_ops);
- if (pr->cdev)
+ if (IS_ERR(pr->cdev)) {
+ result = PTR_ERR(pr->cdev);
+ goto end;
+ }
+ if (pr->cdev) {
printk(KERN_INFO PREFIX
"%s is registered as cooling_device%d\n",
device->dev.bus_id, pr->cdev->id);
- else
- goto end;
- result = sysfs_create_link(&device->dev.kobj, &pr->cdev->device.kobj,
- "thermal_cooling");
- if (result)
- return result;
- result = sysfs_create_link(&pr->cdev->device.kobj, &device->dev.kobj,
- "device");
- if (result)
- return result;
+ result = sysfs_create_link(&device->dev.kobj,
+ &pr->cdev->device.kobj,
+ "thermal_cooling");
+ if (result)
+ return result;
+ result = sysfs_create_link(&pr->cdev->device.kobj,
+ &device->dev.kobj,
+ "device");
+ if (result)
+ return result;
+ }
if (pr->flags.throttling) {
printk(KERN_INFO PREFIX "%s [%s] (supports",
@@ -809,10 +814,12 @@ static int acpi_processor_remove(struct acpi_device *device, int type)
acpi_processor_remove_fs(device);
- sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
- sysfs_remove_link(&pr->cdev->device.kobj, "device");
- thermal_cooling_device_unregister(pr->cdev);
- pr->cdev = NULL;
+ if (pr->cdev) {
+ sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
+ sysfs_remove_link(&pr->cdev->device.kobj, "device");
+ thermal_cooling_device_unregister(pr->cdev);
+ pr->cdev = NULL;
+ }
processors[pr->id] = NULL;
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 980e1c33e6c5..6f3b217699e9 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -364,7 +364,7 @@ int acpi_processor_resume(struct acpi_device * device)
return 0;
}
-#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86_TSC)
+#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
static int tsc_halts_in_c(int state)
{
switch (boot_cpu_data.x86_vendor) {
@@ -544,7 +544,7 @@ static void acpi_processor_idle(void)
/* Get end time (ticks) */
t2 = inl(acpi_gbl_FADT.xpm_timer_block.address);
-#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86_TSC)
+#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
/* TSC halts in C2, so notify users */
if (tsc_halts_in_c(ACPI_STATE_C2))
mark_tsc_unstable("possible TSC halt in C2");
@@ -609,7 +609,7 @@ static void acpi_processor_idle(void)
acpi_set_register(ACPI_BITREG_ARB_DISABLE, 0);
}
-#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86_TSC)
+#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
/* TSC halts in C3, so notify users */
if (tsc_halts_in_c(ACPI_STATE_C3))
mark_tsc_unstable("TSC halts in C3");
@@ -1500,7 +1500,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
acpi_idle_do_entry(cx);
t2 = inl(acpi_gbl_FADT.xpm_timer_block.address);
-#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86_TSC)
+#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
/* TSC could halt in idle, so notify users */
if (tsc_halts_in_c(cx->type))
mark_tsc_unstable("TSC halts in idle");;
@@ -1614,7 +1614,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
spin_unlock(&c3_lock);
}
-#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86_TSC)
+#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
/* TSC could halt in idle, so notify users */
if (tsc_halts_in_c(ACPI_STATE_C3))
mark_tsc_unstable("TSC halts in idle");
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 7f714fa2a454..12cce69b5441 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -731,6 +731,9 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
device->cdev = thermal_cooling_device_register("LCD",
device->dev, &video_cooling_ops);
+ if (IS_ERR(device->cdev))
+ return;
+
if (device->cdev) {
printk(KERN_INFO PREFIX
"%s is registered as cooling_device%d\n",
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