[PATCH] soc: mediatek: SVS: Use DEFINE_SIMPLE_DEV_PM_OPS for svs_pm_ops

From: Nathan Chancellor <nathan@kernel.org>
To: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Roger Lu <roger.lu@mediatek.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org, patches@lists.linux.dev,
	Nathan Chancellor <nathan@kernel.org>
Subject: [PATCH] soc: mediatek: SVS: Use DEFINE_SIMPLE_DEV_PM_OPS for svs_pm_ops
Date: Wed, 22 Jun 2022 10:56:49 -0700	[thread overview]
Message-ID: <20220622175649.1856337-1-nathan@kernel.org> (raw)

When building this driver for an architecture that does not support
CONFIG_PM_SLEEP, such as hexagon, the following warnings occur:

  drivers/soc/mediatek/mtk-svs.c:1481:12: error: unused function 'svs_suspend' [-Werror,-Wunused-function]
  static int svs_suspend(struct device *dev)
             ^
  drivers/soc/mediatek/mtk-svs.c:1515:12: error: unused function 'svs_resume' [-Werror,-Wunused-function]
  static int svs_resume(struct device *dev)
             ^
  2 errors generated.

This happens because SIMPLE_DEV_PM_OPS uses SET_SYSTEM_SLEEP_PM_OPS,
which evaluates to nothing when CONFIG_PM_SLEEP is not set, leaving the
functions unused in the eyes of the compiler.

This problem was rectified in commit 1a3c7bb08826 ("PM: core: Add new
*_PM_OPS macros, deprecate old ones") with new macros. Use
DEFINE_SIMPLE_DEV_PM_OPS to fix the warning while not changing
svs_pm_ops when CONFIG_PM_SLEEP is set.

Fixes: 681a02e95000 ("soc: mediatek: SVS: introduce MTK SVS engine")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
 drivers/soc/mediatek/mtk-svs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
index 606a00a2e57d..d70903f45ddf 100644
--- a/drivers/soc/mediatek/mtk-svs.c
+++ b/drivers/soc/mediatek/mtk-svs.c
@@ -2381,7 +2381,7 @@ static int svs_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static SIMPLE_DEV_PM_OPS(svs_pm_ops, svs_suspend, svs_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(svs_pm_ops, svs_suspend, svs_resume);
 
 static struct platform_driver svs_driver = {
 	.probe	= svs_probe,

base-commit: 71eaf1887203d0a59c92fd9dd3436b8d8489d68c
-- 
2.37.0.rc1

