linux-kernel - [PATCH] arm64: psci: Fix build breakage without PM

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Message-id: <1418125716-18528-1-git-send-email-k.kozlowski@samsung.com>
Date:	Tue, 09 Dec 2014 12:48:36 +0100
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Subject: [PATCH] arm64: psci: Fix build breakage without PM_SLEEP

Fix build failure of defconfig when PM_SLEEP is disabled (e.g. by
disabling SUSPEND) and CPU_IDLE enabled:

arch/arm64/kernel/psci.c:543:2: error: unknown field ‘cpu_suspend’ specified in initializer
  .cpu_suspend = cpu_psci_cpu_suspend,
  ^
arch/arm64/kernel/psci.c:543:2: warning: initialization from incompatible pointer type [enabled by default]
arch/arm64/kernel/psci.c:543:2: warning: (near initialization for ‘cpu_psci_ops.cpu_prepare’) [enabled by default]
make[1]: *** [arch/arm64/kernel/psci.o] Error 1

The cpu_operations.cpu_suspend field exists only if ARM64_CPU_SUSPEND is
defined, not CPU_IDLE.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
---
 arch/arm64/kernel/psci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kernel/psci.c b/arch/arm64/kernel/psci.c
index 3425f311c49e..f1dbca7d5c96 100644
--- a/arch/arm64/kernel/psci.c
+++ b/arch/arm64/kernel/psci.c
@@ -540,6 +540,8 @@ const struct cpu_operations cpu_psci_ops = {
 	.name		= "psci",
 #ifdef CONFIG_CPU_IDLE
 	.cpu_init_idle	= cpu_psci_cpu_init_idle,
+#endif
+#ifdef CONFIG_ARM64_CPU_SUSPEND
 	.cpu_suspend	= cpu_psci_cpu_suspend,
 #endif
 #ifdef CONFIG_SMP
-- 
1.9.1

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