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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-08-29 04:14:37 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-08-30 04:06:33 +0300
commit1b39e3f813b4685c7a30ae964d5529a1b0e3a286 (patch)
treec99c7dfdb062f77af7076c398358dadfcdffa9ca /drivers/acpi/processor_idle.c
parent34c2f65b718d44ea7d7b3cc10777f410677455ce (diff)
downloadlinux-1b39e3f813b4685c7a30ae964d5529a1b0e3a286.tar.xz
cpuidle: Make drivers initialize polling state
Make the drivers that want to include the polling state into their states table initialize it explicitly and drop the initialization of it (which in fact is conditional, but that is not obvious from the code) from the core. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Tested-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/acpi/processor_idle.c')
-rw-r--r--drivers/acpi/processor_idle.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 39a01ea7a46d..df38e81cc672 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -842,7 +842,7 @@ static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr,
static int acpi_processor_setup_cstates(struct acpi_processor *pr)
{
- int i, count = ACPI_IDLE_STATE_START;
+ int i, count;
struct acpi_processor_cx *cx;
struct cpuidle_state *state;
struct cpuidle_driver *drv = &acpi_idle_driver;
@@ -850,6 +850,13 @@ static int acpi_processor_setup_cstates(struct acpi_processor *pr)
if (max_cstate == 0)
max_cstate = 1;
+ if (IS_ENABLED(CONFIG_ARCH_HAS_CPU_RELAX)) {
+ cpuidle_poll_state_init(drv);
+ count = 1;
+ } else {
+ count = 0;
+ }
+
for (i = 1; i < ACPI_PROCESSOR_MAX_POWER && i <= max_cstate; i++) {
cx = &pr->power.states[i];