diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 6d1e238e2375..af9f2afd72da 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -3,7 +3,7 @@ * * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> - * Copyright (C) 2004 Dominik Brodowski <linux@brodo.de> + * Copyright (C) 2004, 2005 Dominik Brodowski <linux@brodo.de> * Copyright (C) 2004 Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> * - Added processor hotplug support * Copyright (C) 2005 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> @@ -261,21 +261,15 @@ static void acpi_processor_idle(void) u32 bm_status = 0; unsigned long diff = jiffies - pr->power.bm_check_timestamp; - if (diff > 32) - diff = 32; + if (diff > 31) + diff = 31; - while (diff) { - /* if we didn't get called, assume there was busmaster activity */ - diff--; - if (diff) - pr->power.bm_activity |= 0x1; - pr->power.bm_activity <<= 1; - } + pr->power.bm_activity <<= diff; acpi_get_register(ACPI_BITREG_BUS_MASTER_STATUS, &bm_status, ACPI_MTX_DO_NOT_LOCK); if (bm_status) { - pr->power.bm_activity++; + pr->power.bm_activity |= 0x1; acpi_set_register(ACPI_BITREG_BUS_MASTER_STATUS, 1, ACPI_MTX_DO_NOT_LOCK); } @@ -287,7 +281,7 @@ static void acpi_processor_idle(void) else if (errata.piix4.bmisx) { if ((inb_p(errata.piix4.bmisx + 0x02) & 0x01) || (inb_p(errata.piix4.bmisx + 0x0A) & 0x01)) - pr->power.bm_activity++; + pr->power.bm_activity |= 0x1; } pr->power.bm_check_timestamp = jiffies; |