diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-07-26 08:10:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-07-26 08:10:00 -0700 |
| commit | dbbe4649d683577de1063dbd9f6da7d4b8de2fed (patch) | |
| tree | 039ff36f35190cbbf235afdaf90d66d4e78fbd07 /drivers/acpi/processor_idle.c | |
| parent | 24b1442d01ae155ea716dfb94ed21605541c317d (diff) | |
| parent | 0e1cf38889110a7188999388614aef17a84d9d25 (diff) | |
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI / Sleep: Allow the NVS saving to be skipped during suspend to RAM
ACPI: create "processor.bm_check_disable" boot param
ACPI: skip checking BM_STS if the BIOS doesn't ask for it
ACPI: fix unused function warning
ACPI: processor: fix processor_physically_present on UP
ACPI video: fix string mismatch for Sony SR290 laptop
ACPI battery: don't invoke power_supply_changed twice when battery is hot-added
ACPI: handle systems which asynchoronously enable ACPI mode
Diffstat (limited to 'drivers/acpi/processor_idle.c')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index b1b385692f46..e9a8026d39f0 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -76,14 +76,19 @@ static unsigned int max_cstate __read_mostly = ACPI_PROCESSOR_MAX_POWER; module_param(max_cstate, uint, 0000); static unsigned int nocst __read_mostly; module_param(nocst, uint, 0000); +static int bm_check_disable __read_mostly; +module_param(bm_check_disable, uint, 0000); static unsigned int latency_factor __read_mostly = 2; module_param(latency_factor, uint, 0644); +#ifdef CONFIG_ACPI_PROCFS static u64 us_to_pm_timer_ticks(s64 t) { return div64_u64(t * PM_TIMER_FREQUENCY, 1000000); } +#endif + /* * IBM ThinkPad R40e crashes mysteriously when going into C2 or C3. * For now disable this. Probably a bug somewhere else. @@ -763,6 +768,9 @@ static int acpi_idle_bm_check(void) { u32 bm_status = 0; + if (bm_check_disable) + return 0; + acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_STATUS, &bm_status); if (bm_status) acpi_write_bit_register(ACPI_BITREG_BUS_MASTER_STATUS, 1); @@ -947,7 +955,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, if (acpi_idle_suspend) return(acpi_idle_enter_c1(dev, state)); - if (acpi_idle_bm_check()) { + if (!cx->bm_sts_skip && acpi_idle_bm_check()) { if (dev->safe_state) { dev->last_state = dev->safe_state; return dev->safe_state->enter(dev, dev->safe_state); |