PM: Make *_DEV_PM_OPS macros use __maybe_unused (756a64ce) · Commits · 戴 / test

This way, when the dev_pm_ops instance is not referenced anywhere, it will simply be dropped by the compiler without a warning. Signed-off-by:

include/linux/pm.h

+2 −2

Original line number	Diff line number	Diff line
		@@ -351,7 +351,7 @@ struct dev_pm_ops {
		* to RAM and hibernation.
		*/
		#define SIMPLE_DEV_PM_OPS(name, suspend_fn, resume_fn) \
		const struct dev_pm_ops name = { \
		const struct dev_pm_ops __maybe_unused name = { \
		SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
		}

		@@ -369,7 +369,7 @@ const struct dev_pm_ops name = { \
		* .runtime_resume(), respectively (and analogously for hibernation).
		*/
		#define UNIVERSAL_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
		const struct dev_pm_ops name = { \
		const struct dev_pm_ops __maybe_unused name = { \
		SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
		SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
		}