linux-kernel - [PATCH] PM: cpuidle: Fix cpuidle_poll_state

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Date:   Mon, 12 Feb 2018 10:21:35 +0100
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux PM <linux-pm@...r.kernel.org>
Cc:     Ville Syrjälä 
        <ville.syrjala@...ux.intel.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        x86 <x86@...nel.org>, Jiri Koshina <jikos@...nel.org>
Subject: [PATCH] PM: cpuidle: Fix cpuidle_poll_state_init() prototype

From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

Commit f85942207516 (x86: PM: Make APM idle driver initialize polling
state) made apm_init() call cpuidle_poll_state_init(), but that only
is defined for CONFIG_CPU_IDLE set, so make the empty stub of it
available for CONFIG_CPU_IDLE unset too to fix the resulting build
issue.

Fixes: f85942207516 (x86: PM: Make APM idle driver initialize polling state)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 include/linux/cpuidle.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-pm/include/linux/cpuidle.h
===================================================================
--- linux-pm.orig/include/linux/cpuidle.h
+++ linux-pm/include/linux/cpuidle.h
@@ -225,7 +225,7 @@ static inline void cpuidle_coupled_paral
 }
 #endif
 
-#ifdef CONFIG_ARCH_HAS_CPU_RELAX
+#if defined(CONFIG_CPU_IDLE) && defined(CONFIG_ARCH_HAS_CPU_RELAX)
 void cpuidle_poll_state_init(struct cpuidle_driver *drv);
 #else
 static inline void cpuidle_poll_state_init(struct cpuidle_driver *drv) {}