d94b93a910
Since commit83109d5d5f("x86/build: Warn on orphan section placement"), we get a warning for objects in orphan sections. The cpuidle implementation for OMAP causes this when CONFIG_CPU_IDLE is disabled: arm-linux-gnueabi-ld: warning: orphan section `__cpuidle_method_of_table' from `arch/arm/mach-omap2/pm33xx-core.o' being placed in section `__cpuidle_method_of_table' arm-linux-gnueabi-ld: warning: orphan section `__cpuidle_method_of_table' from `arch/arm/mach-omap2/pm33xx-core.o' being placed in section `__cpuidle_method_of_table' arm-linux-gnueabi-ld: warning: orphan section `__cpuidle_method_of_table' from `arch/arm/mach-omap2/pm33xx-core.o' being placed in section `__cpuidle_method_of_table' Change the definition of CPUIDLE_METHOD_OF_DECLARE() to silently drop the table and all code referenced from it when CONFIG_CPU_IDLE is disabled. Fixes:06ee7a950b("ARM: OMAP2+: pm33xx-core: Add cpuidle_ops for am335x/am437x") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Miguel Ojeda <ojeda@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20201230155506.1085689-1-arnd@kernel.org
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_ARM_CPUIDLE_H
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#define __ASM_ARM_CPUIDLE_H
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#include <asm/proc-fns.h>
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#ifdef CONFIG_CPU_IDLE
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extern int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
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struct cpuidle_driver *drv, int index);
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#define __cpuidle_method_section __used __section("__cpuidle_method_of_table")
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#else
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static inline int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
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struct cpuidle_driver *drv, int index) { return -ENODEV; }
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#define __cpuidle_method_section __maybe_unused /* drop silently */
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#endif
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/* Common ARM WFI state */
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#define ARM_CPUIDLE_WFI_STATE_PWR(p) {\
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.enter = arm_cpuidle_simple_enter,\
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.exit_latency = 1,\
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.target_residency = 1,\
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.power_usage = p,\
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.name = "WFI",\
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.desc = "ARM WFI",\
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}
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/*
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* in case power_specified == 1, give a default WFI power value needed
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* by some governors
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*/
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#define ARM_CPUIDLE_WFI_STATE ARM_CPUIDLE_WFI_STATE_PWR(UINT_MAX)
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struct device_node;
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struct cpuidle_ops {
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int (*suspend)(unsigned long arg);
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int (*init)(struct device_node *, int cpu);
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};
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struct of_cpuidle_method {
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const char *method;
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const struct cpuidle_ops *ops;
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};
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#define CPUIDLE_METHOD_OF_DECLARE(name, _method, _ops) \
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static const struct of_cpuidle_method __cpuidle_method_of_table_##name \
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__cpuidle_method_section = { .method = _method, .ops = _ops }
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extern int arm_cpuidle_suspend(int index);
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extern int arm_cpuidle_init(int cpu);
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#endif
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