linux-kernel - [PATCH] dmaengine: sa11x0: Mark PM functions as __maybe

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Message-ID: <20211026020508.550-1-caihuoqing@baidu.com>
Date:   Tue, 26 Oct 2021 10:05:07 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <caihuoqing@...du.com>
CC:     Vinod Koul <vkoul@...nel.org>, <dmaengine@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] dmaengine: sa11x0: Mark PM functions as __maybe_unused

Without CONFIG_PM_SLEEP, the runtime suspend/resume functions
are unused, producing a warning:

../drivers/dma/sa11x0-dma.c:1042:12: error: 'sa11x0_dma_resume' defined but not used
../drivers/dma/sa11x0-dma.c:1004:12: error: 'sa11x0_dma_suspend' defined but not used

Signed-off-by: Cai Huoqing <caihuoqing@...du.com>
---
 drivers/dma/sa11x0-dma.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/sa11x0-dma.c b/drivers/dma/sa11x0-dma.c
index 38f318b2f80d..a29c13cae716 100644
--- a/drivers/dma/sa11x0-dma.c
+++ b/drivers/dma/sa11x0-dma.c
@@ -1001,7 +1001,7 @@ static int sa11x0_dma_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static int sa11x0_dma_suspend(struct device *dev)
+static __maybe_unused int sa11x0_dma_suspend(struct device *dev)
 {
 	struct sa11x0_dma_dev *d = dev_get_drvdata(dev);
 	unsigned pch;
@@ -1039,7 +1039,7 @@ static int sa11x0_dma_suspend(struct device *dev)
 	return 0;
 }
 
-static int sa11x0_dma_resume(struct device *dev)
+static __maybe_unused int sa11x0_dma_resume(struct device *dev)
 {
 	struct sa11x0_dma_dev *d = dev_get_drvdata(dev);
 	unsigned pch;
-- 
2.25.1