linux-kernel - [PATCH v3 2/3] PM: Make *_DEV_PM_OPS macros use __maybe

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200716124250.9829-2-paul@crapouillou.net>
Date:   Thu, 16 Jul 2020 14:42:49 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>
Cc:     Ulf Hansson <ulf.hansson@...aro.org>, od@...c.me,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, Paul Cercueil <paul@...pouillou.net>
Subject: [PATCH v3 2/3] PM: Make *_DEV_PM_OPS macros use __maybe_unused

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@...pouillou.net>
Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>
---

Notes:
    v2: No change
    v3: Rebase on 5.8-rc5 and add Ulf's Reviewed-by

 include/linux/pm.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/pm.h b/include/linux/pm.h
index 1f227c518db3..a30a4b54df52 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) \
 }
-- 
2.27.0