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SubjectRe: [PATCH] x86: PM: Make APM idle driver initialize polling state
On Tue, Feb 06, 2018 at 07:02:58PM +0100, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>
> Update the APM driver overlooked by commit 1b39e3f813b4 (cpuidle: Make
> drivers initialize polling state) to initialize the polling state like
> the other cpuidle drivers modified by that commit to prevent cpuidle
> from crashing.
>
> Fixes: 1b39e3f813b4 (cpuidle: Make drivers initialize polling state)
> Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

And maybe?

Cc: <stable@vger.kernel.org> # v4.14+

> ---
> arch/x86/kernel/apm_32.c | 1 +
> 1 file changed, 1 insertion(+)
>
> Index: linux-pm/arch/x86/kernel/apm_32.c
> ===================================================================
> --- linux-pm.orig/arch/x86/kernel/apm_32.c
> +++ linux-pm/arch/x86/kernel/apm_32.c
> @@ -2389,6 +2389,7 @@ static int __init apm_init(void)
> if (HZ != 100)
> idle_period = (idle_period * HZ) / 100;
> if (idle_threshold < 100) {
> + cpuidle_poll_state_init(&apm_idle_driver);
> if (!cpuidle_register_driver(&apm_idle_driver))
> if (cpuidle_register_device(&apm_cpuidle_device))
> cpuidle_unregister_driver(&apm_idle_driver);
>

--
Ville Syrjälä
Intel OTC

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