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authorArnd Bergmann <arnd@arndb.de>2020-12-30 18:54:56 +0300
committerKees Cook <keescook@chromium.org>2021-06-02 22:41:03 +0300
commitd94b93a9101573eb75b819dee94b1417acff631b (patch)
tree20fcf9cbac2525f832755469834ddd5baead666b /arch
parentd07f6ca923ea0927a1024dfccafc5b53b61cfecc (diff)
downloadlinux-d94b93a9101573eb75b819dee94b1417acff631b.tar.xz
ARM: cpuidle: Avoid orphan section warning
Since commit 83109d5d5fba ("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: 06ee7a950b6a ("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
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/include/asm/cpuidle.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/arm/include/asm/cpuidle.h b/arch/arm/include/asm/cpuidle.h
index 0d67ed682e07..bc4ffa7ca04c 100644
--- a/arch/arm/include/asm/cpuidle.h
+++ b/arch/arm/include/asm/cpuidle.h
@@ -7,9 +7,11 @@
#ifdef CONFIG_CPU_IDLE
extern int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index);
+#define __cpuidle_method_section __used __section("__cpuidle_method_of_table")
#else
static inline int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index) { return -ENODEV; }
+#define __cpuidle_method_section __maybe_unused /* drop silently */
#endif
/* Common ARM WFI state */
@@ -42,8 +44,7 @@ struct of_cpuidle_method {
#define CPUIDLE_METHOD_OF_DECLARE(name, _method, _ops) \
static const struct of_cpuidle_method __cpuidle_method_of_table_##name \
- __used __section("__cpuidle_method_of_table") \
- = { .method = _method, .ops = _ops }
+ __cpuidle_method_section = { .method = _method, .ops = _ops }
extern int arm_cpuidle_suspend(int index);