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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: 0ae349a0f3 ("iommu/qcom: Add qcom_iommu")
Acked-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
zero-colors
Arnd Bergmann 2017-08-23 15:42:45 +02:00 committed by Joerg Roedel
parent d43ecff3ef
commit 6ce5b0f22d
1 changed files with 2 additions and 4 deletions
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6
drivers/iommu/qcom_iommu.c
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@ -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)