ARM: 8586/1: cpuidle: make arm_cpuidle_suspend() a bit more efficient (c3fbbf93) · Commits · 戴 / test

arch/arm/kernel/cpuidle.c

+6 −11

Original line number	Diff line number	Diff line
		@@ -47,18 +47,13 @@ int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
		* This function calls the underlying arch specific low level PM code as
		* registered at the init time.
		*
		* Returns -EOPNOTSUPP if no suspend callback is defined, the result of the
		* callback otherwise.
		* Returns the result of the suspend callback.
		*/
		int arm_cpuidle_suspend(int index)
		{
		int ret = -EOPNOTSUPP;
		int cpu = smp_processor_id();

		if (cpuidle_ops[cpu].suspend)
		ret = cpuidle_ops[cpu].suspend(index);

		return ret;
		return cpuidle_ops[cpu].suspend(index);
		}

		/**
		@@ -92,8 +87,8 @@ static const struct cpuidle_ops __init arm_cpuidle_get_ops(const char method)
		* process.
		*
		* Return 0 on sucess, -ENOENT if no 'enable-method' is defined, -EOPNOTSUPP if
		* no cpuidle_ops is registered for the 'enable-method', or if no init callback
		* is defined.
		* no cpuidle_ops is registered for the 'enable-method', or if either init or
		* suspend callback isn't defined.
		*/
		static int __init arm_cpuidle_read_ops(struct device_node *dn, int cpu)
		{
		@@ -111,8 +106,8 @@ static int __init arm_cpuidle_read_ops(struct device_node *dn, int cpu)
		return -EOPNOTSUPP;
		}

		if (!ops->init) {
		pr_warn("cpuidle_ops '%s': no init callback\n",
		if (!ops->init \|\| !ops->suspend) {
		pr_warn("cpuidle_ops '%s': no init or suspend callback\n",
		enable_method);
		return -EOPNOTSUPP;
		}