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iommu/mediatek: Mark PM functions as __maybe_unused

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When CONFIG_PM is unset, we get a harmless warning for this driver:

drivers/iommu/mtk_iommu.c:665:12: error: 'mtk_iommu_suspend' defined but not used [-Werror=unused-function]
drivers/iommu/mtk_iommu.c:680:12: error: 'mtk_iommu_resume' defined but not used [-Werror=unused-function]

Marking the functions as __maybe_unused gits rid of the two functions
and lets the compiler silently drop the object code, while still
doing syntax checking on them for build-time verification.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 0df4fabe20 ("iommu/mediatek: Add mt8173 IOMMU driver")
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Arnd Bergmann 2016-02-29 10:19:07 +01:00 committed by Joerg Roedel
parent 1928832f02
commit fd99f796a2
1 changed files with 2 additions and 2 deletions
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4
drivers/iommu/mtk_iommu.c
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@ -662,7 +662,7 @@ static int mtk_iommu_remove(struct platform_device *pdev)
return 0;
}
static int mtk_iommu_suspend(struct device *dev)
static int __maybe_unused mtk_iommu_suspend(struct device *dev)
{
struct mtk_iommu_data *data = dev_get_drvdata(dev);
struct mtk_iommu_suspend_reg *reg = &data->reg;
@ -677,7 +677,7 @@ static int mtk_iommu_suspend(struct device *dev)
return 0;
}
static int mtk_iommu_resume(struct device *dev)
static int __maybe_unused mtk_iommu_resume(struct device *dev)
{
struct mtk_iommu_data *data = dev_get_drvdata(dev);
struct mtk_iommu_suspend_reg *reg = &data->reg;