linux-kernel - [PATCH] slimbus: ngd: mark PM functions as __maybe

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Date:   Mon, 20 Aug 2018 11:35:37 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Vinod Koul <vkoul@...nel.org>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] slimbus: ngd: mark PM functions as __maybe_unused

qcom_slim_ngd_runtime_suspend is protected by an #ifdef,
qcom_slim_ngd_runtime_idle is now, which causes a build time warning:

drivers/slimbus/qcom-ngd-ctrl.c:1470:12: error: 'qcom_slim_ngd_runtime_idle' defined but not used [-Werror=unused-function]

Marking both as __maybe_unused lets us get rid of the warning
as well as the #ifdef.

Fixes: 917809e2280b ("slimbus: ngd: Add qcom SLIMBus NGD driver")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/slimbus/qcom-ngd-ctrl.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c
index 8be4d6786c61..14a9d18306cb 100644
--- a/drivers/slimbus/qcom-ngd-ctrl.c
+++ b/drivers/slimbus/qcom-ngd-ctrl.c
@@ -1467,7 +1467,7 @@ static int qcom_slim_ngd_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static int qcom_slim_ngd_runtime_idle(struct device *dev)
+static int __maybe_unused qcom_slim_ngd_runtime_idle(struct device *dev)
 {
 	struct qcom_slim_ngd_ctrl *ctrl = dev_get_drvdata(dev);
 
@@ -1477,8 +1477,7 @@ static int qcom_slim_ngd_runtime_idle(struct device *dev)
 	return -EAGAIN;
 }
 
-#ifdef CONFIG_PM
-static int qcom_slim_ngd_runtime_suspend(struct device *dev)
+static int __maybe_unused qcom_slim_ngd_runtime_suspend(struct device *dev)
 {
 	struct qcom_slim_ngd_ctrl *ctrl = dev_get_drvdata(dev);
 	int ret = 0;
@@ -1491,7 +1490,6 @@ static int qcom_slim_ngd_runtime_suspend(struct device *dev)
 
 	return ret;
 }
-#endif
 
 static const struct dev_pm_ops qcom_slim_ngd_dev_pm_ops = {
 	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-- 
2.18.0