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gcc-4.6: ACPI: fix unused but set variables in ACPI 

Some minor improvements in error handling, but overall it was mostly dead
code.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Andi Kleen 2010-07-20 15:18:36 -07:00 committed by Len Brown
parent 43d9f87b79
commit cfa806f059
7 changed files with 11 additions and 26 deletions
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5
drivers/acpi/acpica/utmutex.c
View File

@ -279,13 +279,10 @@ acpi_status acpi_ut_acquire_mutex(acpi_mutex_handle mutex_id)
acpi_status acpi_ut_release_mutex(acpi_mutex_handle mutex_id)
{
acpi_thread_id this_thread_id;
ACPI_FUNCTION_NAME(ut_release_mutex);
this_thread_id = acpi_os_get_thread_id();
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Thread %p releasing Mutex [%s]\n",
ACPI_CAST_PTR(void, this_thread_id),
ACPI_CAST_PTR(void, acpi_os_get_thread_id()),
acpi_ut_get_mutex_name(mutex_id)));
if (mutex_id > ACPI_MAX_MUTEX) {

4
drivers/acpi/numa.c
View File

@ -255,12 +255,10 @@ acpi_parse_memory_affinity(struct acpi_subtable_header * header,
static int __init acpi_parse_srat(struct acpi_table_header *table)
{
struct acpi_table_srat *srat;
if (!table)
return -EINVAL;
srat = (struct acpi_table_srat *)table;
/* Real work done in acpi_table_parse_srat below. */
return 0;
}

7
drivers/acpi/osl.c
View File

@ -141,15 +141,14 @@ static struct osi_linux {
static void __init acpi_request_region (struct acpi_generic_address *addr,
unsigned int length, char *desc)
{
struct resource *res;
if (!addr->address || !length)
return;
/* Resources are never freed */
if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_IO)
res = request_region(addr->address, length, desc);
request_region(addr->address, length, desc);
else if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
res = request_mem_region(addr->address, length, desc);
request_mem_region(addr->address, length, desc);
}
static int __init acpi_reserve_resources(void)

2
drivers/acpi/power.c
View File

@ -242,8 +242,6 @@ static int acpi_power_off_device(acpi_handle handle, struct acpi_device *dev)
acpi_status status = AE_OK;
struct acpi_power_resource *resource = NULL;
struct list_head *node, *next;
struct acpi_power_reference *ref;
result = acpi_power_get_context(handle, &resource);
if (result)

3
drivers/acpi/processor_idle.c
View File

@ -722,13 +722,12 @@ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx)
} else if (cx->entry_method == ACPI_CSTATE_HALT) {
acpi_safe_halt();
} else {
int unused;
/* IO port based C-state */
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. */
unused = inl(acpi_gbl_FADT.xpm_timer_block.address);
inl(acpi_gbl_FADT.xpm_timer_block.address);
}
start_critical_timings();
}

10
drivers/acpi/video.c
View File

@ -2167,7 +2167,7 @@ acpi_video_bus_get_devices(struct acpi_video_bus *video,
status = acpi_video_bus_get_one_device(dev, video);
if (ACPI_FAILURE(status)) {
printk(KERN_WARNING PREFIX
"Cant attach device");
"Cant attach device\n");
continue;
}
}
@ -2177,19 +2177,19 @@ acpi_video_bus_get_devices(struct acpi_video_bus *video,
static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
{
acpi_status status;
struct acpi_video_bus *video;
if (!device || !device->video)
return -ENOENT;
video = device->video;
acpi_video_device_remove_fs(device->dev);
status = acpi_remove_notify_handler(device->dev->handle,
ACPI_DEVICE_NOTIFY,
acpi_video_device_notify);
if (ACPI_FAILURE(status)) {
printk(KERN_WARNING PREFIX
"Cant remove video notify handler\n");
}
if (device->backlight) {
sysfs_remove_link(&device->backlight->dev.kobj, "device");
backlight_device_unregister(device->backlight);

6
drivers/ata/libata-acpi.c
View File

@ -145,12 +145,6 @@ static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
struct ata_eh_info *ehi = &ap->link.eh_info;
int wait = 0;
unsigned long flags;
acpi_handle handle;
if (dev)
handle = dev->acpi_handle;
else
handle = ap->acpi_handle;
spin_lock_irqsave(ap->lock, flags);
/*