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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-02-19 14:02:17 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-02-21 00:27:47 +0100 |
| commit | 772c53990fc29a34aec539abc6b2a1edbab8b2b5 (patch) | |
| tree | 5c7fba628d7b7139cb5af5856df2ba45910a0af6 /drivers/xen | |
| parent | 8b296d9412a087c1e2191d3e7448c76d9498714f (diff) | |
| download | linux-772c53990fc29a34aec539abc6b2a1edbab8b2b5.tar.gz linux-772c53990fc29a34aec539abc6b2a1edbab8b2b5.tar.bz2 linux-772c53990fc29a34aec539abc6b2a1edbab8b2b5.zip | |
ACPI / PAD / xen: use acpi_evaluate_ost() to replace open-coded version
Use public function acpi_evaluate_ost() to replace open-coded
version of evaluating ACPI _OST method.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/xen-acpi-pad.c | 26 |
1 files changed, 7 insertions, 19 deletions
diff --git a/drivers/xen/xen-acpi-pad.c b/drivers/xen/xen-acpi-pad.c index 40c4bc06b5fa..f83b754505f8 100644 --- a/drivers/xen/xen-acpi-pad.c +++ b/drivers/xen/xen-acpi-pad.c @@ -77,27 +77,14 @@ static int acpi_pad_pur(acpi_handle handle) return num; } -/* Notify firmware how many CPUs are idle */ -static void acpi_pad_ost(acpi_handle handle, int stat, - uint32_t idle_nums) -{ - union acpi_object params[3] = { - {.type = ACPI_TYPE_INTEGER,}, - {.type = ACPI_TYPE_INTEGER,}, - {.type = ACPI_TYPE_BUFFER,}, - }; - struct acpi_object_list arg_list = {3, params}; - - params[0].integer.value = ACPI_PROCESSOR_AGGREGATOR_NOTIFY; - params[1].integer.value = stat; - params[2].buffer.length = 4; - params[2].buffer.pointer = (void *)&idle_nums; - acpi_evaluate_object(handle, "_OST", &arg_list, NULL); -} - static void acpi_pad_handle_notify(acpi_handle handle) { int idle_nums; + struct acpi_buffer param = { + .length = 4, + .pointer = (void *)&idle_nums, + }; + mutex_lock(&xen_cpu_lock); idle_nums = acpi_pad_pur(handle); @@ -109,7 +96,8 @@ static void acpi_pad_handle_notify(acpi_handle handle) idle_nums = xen_acpi_pad_idle_cpus(idle_nums) ?: xen_acpi_pad_idle_cpus_num(); if (idle_nums >= 0) - acpi_pad_ost(handle, 0, idle_nums); + acpi_evaluate_ost(handle, ACPI_PROCESSOR_AGGREGATOR_NOTIFY, + 0, ¶m); mutex_unlock(&xen_cpu_lock); } |