linux-kernel - [PATCH v3 5/6] PM: runtime: Add EXPORT[_GPL]_RUNTIME_DEV_PM

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Date:   Fri,  7 Jan 2022 18:17:22 +0000
From:   Paul Cercueil <paul@...pouillou.net>
To:     "Rafael J . Wysocki" <rafael@...nel.org>
Cc:     Ulf Hansson <ulf.hansson@...aro.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Arnd Bergmann <arnd@...db.de>, Len Brown <len.brown@...el.com>,
        Pavel Machek <pavel@....cz>, list@...ndingux.net,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-pm@...r.kernel.org, Paul Cercueil <paul@...pouillou.net>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>
Subject: [PATCH v3 5/6] PM: runtime: Add EXPORT[_GPL]_RUNTIME_DEV_PM_OPS macros

Similar to EXPORT[_GPL]_SIMPLE_DEV_PM_OPS, but for users with runtime-PM
suspend/resume callbacks.

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
Acked-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
---

Notes:
    v2: No change
    v3: Add comment about the necesity to use the new export macro when
        the dev_pm_ops has to be exported

 include/linux/pm_runtime.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index 4af454d29281..9f09601c465a 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -30,12 +30,22 @@
  * macro, which uses the provided callbacks for both runtime PM and system
  * sleep, while DEFINE_RUNTIME_DEV_PM_OPS() uses pm_runtime_force_suspend()
  * and pm_runtime_force_resume() for its system sleep callbacks.
+ *
+ * If the underlying dev_pm_ops struct symbol has to be exported, use
+ * EXPORT_RUNTIME_DEV_PM_OPS() or EXPORT_GPL_RUNTIME_DEV_PM_OPS() instead.
  */
 #define DEFINE_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
 	_DEFINE_DEV_PM_OPS(name, pm_runtime_force_suspend, \
 			   pm_runtime_force_resume, suspend_fn, \
 			   resume_fn, idle_fn)
 
+#define EXPORT_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
+	_EXPORT_DEV_PM_OPS(name, pm_runtime_force_suspend, pm_runtime_force_resume, \
+			   suspend_fn, resume_fn, idle_fn, "")
+#define EXPORT_GPL_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
+	_EXPORT_DEV_PM_OPS(name, pm_runtime_force_suspend, pm_runtime_force_resume, \
+			   suspend_fn, resume_fn, idle_fn, "_gpl")
+
 #ifdef CONFIG_PM
 extern struct workqueue_struct *pm_wq;
 
-- 
2.34.1