diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/processor_throttling.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c index 1685b40abda..5d2eae20788 100644 --- a/drivers/acpi/processor_throttling.c +++ b/drivers/acpi/processor_throttling.c @@ -589,6 +589,11 @@ static int acpi_processor_get_throttling(struct acpi_processor *pr) cpumask_t saved_mask; int ret; + if (!pr) + return -EINVAL; + + if (!pr->flags.throttling) + return -ENODEV; /* * Migrate task to the cpu pointed by pr. */ @@ -743,6 +748,16 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state) { cpumask_t saved_mask; int ret; + + if (!pr) + return -EINVAL; + + if (!pr->flags.throttling) + return -ENODEV; + + if ((state < 0) || (state > (pr->throttling.state_count - 1))) + return -EINVAL; + /* * Migrate task to the cpu pointed by pr. */ |