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[RFC,2/3] PM: Make *_DEV_PM_OPS macros use __maybe_unused

Message ID 20200211160321.22124-3-paul@crapouillou.net (mailing list archive)
State New, archived
Headers show
Series Introduce pm_ptr() / pm_sleep_ptr() | expand

Commit Message

Paul Cercueil Feb. 11, 2020, 4:03 p.m. UTC 
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: Paul Cercueil <paul@crapouillou.net>
---
 include/linux/pm.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/include/linux/pm.h b/include/linux/pm.h
index 1e183d78a1ae..892e4fd198c0 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -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) \
 }