linux-kernel - [RFC PATCH 1/3] PM: introduce pm_ptr() and pm_sleep

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Message-Id: <20200211160321.22124-2-paul@crapouillou.net>
Date:   Tue, 11 Feb 2020 13:03:19 -0300
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-pm@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-kernel@...r.kernel.org, Paul Cercueil <paul@...pouillou.net>
Subject: [RFC PATCH 1/3] PM: introduce pm_ptr() and pm_sleep_ptr()

These macros are analogous to the infamous of_match_ptr(). If CONFIG_PM
or CONFIG_PM_SLEEP are enabled (respectively), these macros will resolve
to their argument, otherwise to NULL.

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
---
 include/linux/pm.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/linux/pm.h b/include/linux/pm.h
index e057d1fa2469..1e183d78a1ae 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -374,6 +374,18 @@ const struct dev_pm_ops name = { \
 	SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
 }
 
+#ifdef CONFIG_PM
+#define pm_ptr(_ptr) (_ptr)
+#else
+#define pm_ptr(_ptr) NULL
+#endif
+
+#ifdef CONFIG_PM_SLEEP
+#define pm_sleep_ptr(_ptr) (_ptr)
+#else
+#define pm_sleep_ptr(_ptr) NULL
+#endif
+
 /*
  * PM_EVENT_ messages
  *
-- 
2.25.0