diff options
Diffstat (limited to 'drivers/acpi/processor_throttling.c')
-rw-r--r-- | drivers/acpi/processor_throttling.c | 45 |
1 files changed, 20 insertions, 25 deletions
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c index b966549ec00..d044ec519db 100644 --- a/drivers/acpi/processor_throttling.c +++ b/drivers/acpi/processor_throttling.c @@ -55,13 +55,12 @@ static int acpi_processor_get_throttling(struct acpi_processor *pr) u32 duty_mask = 0; u32 duty_value = 0; - ACPI_FUNCTION_TRACE("acpi_processor_get_throttling"); if (!pr) - return_VALUE(-EINVAL); + return -EINVAL; if (!pr->flags.throttling) - return_VALUE(-ENODEV); + return -ENODEV; pr->throttling.state = 0; @@ -93,7 +92,7 @@ static int acpi_processor_get_throttling(struct acpi_processor *pr) "Throttling state is T%d (%d%% throttling applied)\n", state, pr->throttling.states[state].performance)); - return_VALUE(0); + return 0; } int acpi_processor_set_throttling(struct acpi_processor *pr, int state) @@ -102,19 +101,18 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state) u32 duty_mask = 0; u32 duty_value = 0; - ACPI_FUNCTION_TRACE("acpi_processor_set_throttling"); if (!pr) - return_VALUE(-EINVAL); + return -EINVAL; if ((state < 0) || (state > (pr->throttling.state_count - 1))) - return_VALUE(-EINVAL); + return -EINVAL; if (!pr->flags.throttling) - return_VALUE(-ENODEV); + return -ENODEV; if (state == pr->throttling.state) - return_VALUE(0); + return 0; /* * Calculate the duty_value and duty_mask. @@ -165,7 +163,7 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state) (pr->throttling.states[state].performance ? pr-> throttling.states[state].performance / 10 : 0))); - return_VALUE(0); + return 0; } int acpi_processor_get_throttling_info(struct acpi_processor *pr) @@ -174,7 +172,6 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr) int step = 0; int i = 0; - ACPI_FUNCTION_TRACE("acpi_processor_get_throttling_info"); ACPI_DEBUG_PRINT((ACPI_DB_INFO, "pblk_address[0x%08x] duty_offset[%d] duty_width[%d]\n", @@ -183,21 +180,21 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr) pr->throttling.duty_width)); if (!pr) - return_VALUE(-EINVAL); + return -EINVAL; /* TBD: Support ACPI 2.0 objects */ if (!pr->throttling.address) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No throttling register\n")); - return_VALUE(0); + return 0; } else if (!pr->throttling.duty_width) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No throttling states\n")); - return_VALUE(0); + return 0; } /* TBD: Support duty_cycle values that span bit 4. */ else if ((pr->throttling.duty_offset + pr->throttling.duty_width) > 4) { - ACPI_DEBUG_PRINT((ACPI_DB_WARN, "duty_cycle spans bit 4\n")); - return_VALUE(0); + printk(KERN_WARNING PREFIX "duty_cycle spans bit 4\n"); + return 0; } /* @@ -208,7 +205,7 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr) if (errata.piix4.throttle) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Throttling not supported on PIIX4 A- or B-step\n")); - return_VALUE(0); + return 0; } pr->throttling.state_count = 1 << acpi_fadt.duty_width; @@ -254,7 +251,7 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr) if (result) pr->flags.throttling = 0; - return_VALUE(result); + return result; } /* proc interface */ @@ -266,7 +263,6 @@ static int acpi_processor_throttling_seq_show(struct seq_file *seq, int i = 0; int result = 0; - ACPI_FUNCTION_TRACE("acpi_processor_throttling_seq_show"); if (!pr) goto end; @@ -296,7 +292,7 @@ static int acpi_processor_throttling_seq_show(struct seq_file *seq, throttling.states[i].performance / 10 : 0)); end: - return_VALUE(0); + return 0; } static int acpi_processor_throttling_open_fs(struct inode *inode, @@ -315,13 +311,12 @@ static ssize_t acpi_processor_write_throttling(struct file * file, struct acpi_processor *pr = (struct acpi_processor *)m->private; char state_string[12] = { '\0' }; - ACPI_FUNCTION_TRACE("acpi_processor_write_throttling"); if (!pr || (count > sizeof(state_string) - 1)) - return_VALUE(-EINVAL); + return -EINVAL; if (copy_from_user(state_string, buffer, count)) - return_VALUE(-EFAULT); + return -EFAULT; state_string[count] = '\0'; @@ -329,9 +324,9 @@ static ssize_t acpi_processor_write_throttling(struct file * file, simple_strtoul(state_string, NULL, 0)); if (result) - return_VALUE(result); + return result; - return_VALUE(count); + return count; } struct file_operations acpi_processor_throttling_fops = { |