static void acpi_safe_halt(void)
{
- clear_thread_flag(TIF_POLLING_NRFLAG);
+ current_thread_info()->status &= ~TS_POLLING;
smp_mb__after_clear_bit();
if (!need_resched())
safe_halt();
- set_thread_flag(TIF_POLLING_NRFLAG);
+ current_thread_info()->status |= TS_POLLING;
}
static atomic_t c3_cpu_count;
* Invoke the current Cx state to put the processor to sleep.
*/
if (cx->type == ACPI_STATE_C2 || cx->type == ACPI_STATE_C3) {
- clear_thread_flag(TIF_POLLING_NRFLAG);
+ current_thread_info()->status &= ~TS_POLLING;
smp_mb__after_clear_bit();
if (need_resched()) {
- set_thread_flag(TIF_POLLING_NRFLAG);
+ current_thread_info()->status |= TS_POLLING;
local_irq_enable();
return;
}
#endif
/* Re-enable interrupts */
local_irq_enable();
- set_thread_flag(TIF_POLLING_NRFLAG);
+ current_thread_info()->status |= TS_POLLING;
/* Compute time (ticks) that we were actually asleep */
sleep_ticks =
ticks_elapsed(t1, t2) - cx->latency_ticks - C2_OVERHEAD;
#endif
/* Re-enable interrupts */
local_irq_enable();
- set_thread_flag(TIF_POLLING_NRFLAG);
+ current_thread_info()->status |= TS_POLLING;
/* Compute time (ticks) that we were actually asleep */
sleep_ticks =
ticks_elapsed(t1, t2) - cx->latency_ticks - C3_OVERHEAD;
struct acpi_processor_cx *higher = NULL;
struct acpi_processor_cx *cx;
- ACPI_FUNCTION_TRACE("acpi_processor_set_power_policy");
if (!pr)
- return_VALUE(-EINVAL);
+ return -EINVAL;
/*
* This function sets the default Cx state policy (OS idle handler).
}
if (!state_is_set)
- return_VALUE(-ENODEV);
+ return -ENODEV;
/* demotion */
for (i = 1; i < ACPI_PROCESSOR_MAX_POWER; i++) {
higher = cx;
}
- return_VALUE(0);
+ return 0;
}
static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr)
{
- ACPI_FUNCTION_TRACE("acpi_processor_get_power_info_fadt");
if (!pr)
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (!pr->pblk)
- return_VALUE(-ENODEV);
+ return -ENODEV;
/* if info is obtained from pblk/fadt, type equals state */
pr->power.states[ACPI_STATE_C2].type = ACPI_STATE_C2;
* an SMP system.
*/
if ((num_online_cpus() > 1) && !acpi_fadt.plvl2_up)
- return_VALUE(-ENODEV);
+ return -ENODEV;
#endif
/* determine C2 and C3 address from pblk */
pr->power.states[ACPI_STATE_C2].address,
pr->power.states[ACPI_STATE_C3].address));
- return_VALUE(0);
+ return 0;
}
static int acpi_processor_get_power_info_default_c1(struct acpi_processor *pr)
{
- ACPI_FUNCTION_TRACE("acpi_processor_get_power_info_default_c1");
/* Zero initialize all the C-states info. */
memset(pr->power.states, 0, sizeof(pr->power.states));
pr->power.states[ACPI_STATE_C0].valid = 1;
pr->power.states[ACPI_STATE_C1].valid = 1;
- return_VALUE(0);
+ return 0;
}
static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *cst;
- ACPI_FUNCTION_TRACE("acpi_processor_get_power_info_cst");
if (nocst)
- return_VALUE(-ENODEV);
+ return -ENODEV;
current_count = 1;
status = acpi_evaluate_object(pr->handle, "_CST", NULL, &buffer);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No _CST, giving up\n"));
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
cst = (union acpi_object *)buffer.pointer;
/* There must be at least 2 elements */
if (!cst || (cst->type != ACPI_TYPE_PACKAGE) || cst->package.count < 2) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "not enough elements in _CST\n"));
+ printk(KERN_ERR PREFIX "not enough elements in _CST\n");
status = -EFAULT;
goto end;
}
/* Validate number of power states. */
if (count < 1 || count != cst->package.count - 1) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "count given by _CST is not valid\n"));
+ printk(KERN_ERR PREFIX "count given by _CST is not valid\n");
status = -EFAULT;
goto end;
}
end:
acpi_os_free(buffer.pointer);
- return_VALUE(status);
+ return status;
}
static void acpi_processor_power_verify_c2(struct acpi_processor_cx *cx)
{
- ACPI_FUNCTION_TRACE("acpi_processor_get_power_verify_c2");
if (!cx->address)
- return_VOID;
+ return;
/*
* C2 latency must be less than or equal to 100
else if (cx->latency > ACPI_PROCESSOR_MAX_C2_LATENCY) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"latency too large [%d]\n", cx->latency));
- return_VOID;
+ return;
}
/*
cx->valid = 1;
cx->latency_ticks = US_TO_PM_TIMER_TICKS(cx->latency);
- return_VOID;
+ return;
}
static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
{
static int bm_check_flag;
- ACPI_FUNCTION_TRACE("acpi_processor_get_power_verify_c3");
if (!cx->address)
- return_VOID;
+ return;
/*
* C3 latency must be less than or equal to 1000
else if (cx->latency > ACPI_PROCESSOR_MAX_C3_LATENCY) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"latency too large [%d]\n", cx->latency));
- return_VOID;
+ return;
}
/*
else if (errata.piix4.fdma) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"C3 not supported on PIIX4 with Type-F DMA\n"));
- return_VOID;
+ return;
}
/* All the logic here assumes flags.bm_check is same across all CPUs */
if (!pr->flags.bm_control) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"C3 support requires bus mastering control\n"));
- return_VOID;
+ return;
}
} else {
/*
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Cache invalidation should work properly"
" for C3 to be enabled on SMP systems\n"));
- return_VOID;
+ return;
}
acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD,
0, ACPI_MTX_DO_NOT_LOCK);
cx->valid = 1;
cx->latency_ticks = US_TO_PM_TIMER_TICKS(cx->latency);
- return_VOID;
+ return;
}
static int acpi_processor_power_verify(struct acpi_processor *pr)
unsigned int i;
int result;
- ACPI_FUNCTION_TRACE("acpi_processor_get_power_info");
/* NOTE: the idle thread may not be running while calling
* this function */
*/
result = acpi_processor_set_power_policy(pr);
if (result)
- return_VALUE(result);
+ return result;
/*
* if one state of type C2 or C3 is available, mark this
}
}
- return_VALUE(0);
+ return 0;
}
int acpi_processor_cst_has_changed(struct acpi_processor *pr)
{
int result = 0;
- ACPI_FUNCTION_TRACE("acpi_processor_cst_has_changed");
if (!pr)
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (nocst) {
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
if (!pr->flags.power_setup_done)
- return_VALUE(-ENODEV);
+ return -ENODEV;
/* Fall back to the default idle loop */
pm_idle = pm_idle_save;
if ((pr->flags.power == 1) && (pr->flags.power_setup_done))
pm_idle = acpi_processor_idle;
- return_VALUE(result);
+ return result;
}
/* proc interface */
struct acpi_processor *pr = (struct acpi_processor *)seq->private;
unsigned int i;
- ACPI_FUNCTION_TRACE("acpi_processor_power_seq_show");
if (!pr)
goto end;
}
end:
- return_VALUE(0);
+ return 0;
}
static int acpi_processor_power_open_fs(struct inode *inode, struct file *file)
struct proc_dir_entry *entry = NULL;
unsigned int i;
- ACPI_FUNCTION_TRACE("acpi_processor_power_init");
if (!first_run) {
dmi_check_system(processor_power_dmi_table);
}
if (!pr)
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (acpi_fadt.cst_cnt && !nocst) {
status =
acpi_os_write_port(acpi_fadt.smi_cmd, acpi_fadt.cst_cnt, 8);
if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Notifying BIOS of _CST ability failed\n"));
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Notifying BIOS of _CST ability failed"));
}
}
entry = create_proc_entry(ACPI_PROCESSOR_FILE_POWER,
S_IRUGO, acpi_device_dir(device));
if (!entry)
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Unable to create '%s' fs entry\n",
- ACPI_PROCESSOR_FILE_POWER));
+ return -EIO;
else {
entry->proc_fops = &acpi_processor_power_fops;
entry->data = acpi_driver_data(device);
pr->flags.power_setup_done = 1;
- return_VALUE(0);
+ return 0;
}
int acpi_processor_power_exit(struct acpi_processor *pr,
struct acpi_device *device)
{
- ACPI_FUNCTION_TRACE("acpi_processor_power_exit");
pr->flags.power_setup_done = 0;
cpu_idle_wait();
}
- return_VALUE(0);
+ return 0;
}
projects / karo-tx-linux.git / blobdiff