linux-kernel - [PATCH 09/28] mfd: ucb1x00: Remove #ifdef guards for PM related functions

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: <20220807145247.46107-10-paul@crapouillou.net>
Date:   Sun,  7 Aug 2022 16:52:28 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     linux-kernel@...r.kernel.org, Paul Cercueil <paul@...pouillou.net>
Subject: [PATCH 09/28] mfd: ucb1x00: Remove #ifdef guards for PM related functions

Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros
to handle the .suspend/.resume callbacks.

These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards.

The advantage is then that these functions are now always compiled
independently of any Kconfig option, and thanks to that bugs and
regressions are easier to catch.

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
---
 drivers/mfd/ucb1x00-core.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c
index b690796d24d4..fc4d4c844a81 100644
--- a/drivers/mfd/ucb1x00-core.c
+++ b/drivers/mfd/ucb1x00-core.c
@@ -660,7 +660,6 @@ void ucb1x00_unregister_driver(struct ucb1x00_driver *drv)
 	mutex_unlock(&ucb1x00_mutex);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int ucb1x00_suspend(struct device *dev)
 {
 	struct ucb1x00_plat_data *pdata = dev_get_platdata(dev);
@@ -728,15 +727,15 @@ static int ucb1x00_resume(struct device *dev)
 	mutex_unlock(&ucb1x00_mutex);
 	return 0;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(ucb1x00_pm_ops, ucb1x00_suspend, ucb1x00_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(ucb1x00_pm_ops,
+				ucb1x00_suspend, ucb1x00_resume);
 
 static struct mcp_driver ucb1x00_driver = {
 	.drv		= {
 		.name	= "ucb1x00",
 		.owner	= THIS_MODULE,
-		.pm	= &ucb1x00_pm_ops,
+		.pm	= pm_sleep_ptr(&ucb1x00_pm_ops),
 	},
 	.probe		= ucb1x00_probe,
 	.remove		= ucb1x00_remove,
-- 
2.35.1