From 6ce5b0f22d6061b33aaf302f73302f402fea0c17 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 23 Aug 2017 15:42:45 +0200 Subject: [PATCH] iommu: qcom: annotate PM functions as __maybe_unused The qcom_iommu_disable_clocks() function is only called from PM code that is hidden in an #ifdef, causing a harmless warning without CONFIG_PM: drivers/iommu/qcom_iommu.c:601:13: error: 'qcom_iommu_disable_clocks' defined but not used [-Werror=unused-function] static void qcom_iommu_disable_clocks(struct qcom_iommu_dev *qcom_iommu) drivers/iommu/qcom_iommu.c:581:12: error: 'qcom_iommu_enable_clocks' defined but not used [-Werror=unused-function] static int qcom_iommu_enable_clocks(struct qcom_iommu_dev *qcom_iommu) Replacing that #ifdef with __maybe_unused annotations lets the compiler drop the functions silently instead. Fixes: 0ae349a0f33f ("iommu/qcom: Add qcom_iommu") Acked-by: Rob Clark Signed-off-by: Arnd Bergmann Signed-off-by: Joerg Roedel --- drivers/iommu/qcom_iommu.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/qcom_iommu.c b/drivers/iommu/qcom_iommu.c index 48b62aa52787..c8a587d034b0 100644 --- a/drivers/iommu/qcom_iommu.c +++ b/drivers/iommu/qcom_iommu.c @@ -860,8 +860,7 @@ static int qcom_iommu_device_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM -static int qcom_iommu_resume(struct device *dev) +static int __maybe_unused qcom_iommu_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct qcom_iommu_dev *qcom_iommu = platform_get_drvdata(pdev); @@ -869,7 +868,7 @@ static int qcom_iommu_resume(struct device *dev) return qcom_iommu_enable_clocks(qcom_iommu); } -static int qcom_iommu_suspend(struct device *dev) +static int __maybe_unused qcom_iommu_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct qcom_iommu_dev *qcom_iommu = platform_get_drvdata(pdev); @@ -878,7 +877,6 @@ static int qcom_iommu_suspend(struct device *dev) return 0; } -#endif static const struct dev_pm_ops qcom_iommu_pm_ops = { SET_RUNTIME_PM_OPS(qcom_iommu_suspend, qcom_iommu_resume, NULL)