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Subject[PATCH -next] scsi: ufs: ufs-mediatek: Fix build error
If CONFIG_PM is not set,
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu-, will be failed, like this:
drivers/ufs/host/ufs-mediatek.c: In function ‘ufs_mtk_runtime_suspend’:
drivers/ufs/host/ufs-mediatek.c:1435:8: error: implicit declaration of function ‘ufshcd_runtime_suspend’; did you mean ‘ufs_mtk_runtime_suspend’? [-Werror=implicit-function-declaration]
ret = ufshcd_runtime_suspend(dev);
drivers/ufs/host/ufs-mediatek.c: In function ‘ufs_mtk_runtime_resume’:
drivers/ufs/host/ufs-mediatek.c:1450:9: error: implicit declaration of function ‘ufshcd_runtime_resume’; did you mean ‘ufs_mtk_runtime_resume’? [-Werror=implicit-function-declaration]
return ufshcd_runtime_resume(dev);
At top level:
drivers/ufs/host/ufs-mediatek.c:1444:12: error: ‘ufs_mtk_runtime_resume’ defined but not used [-Werror=unused-function]
static int ufs_mtk_runtime_resume(struct device *dev)
drivers/ufs/host/ufs-mediatek.c:1430:12: error: ‘ufs_mtk_runtime_suspend’ defined but not used [-Werror=unused-function]
static int ufs_mtk_runtime_suspend(struct device *dev)
cc1: all warnings being treated as errors

The declarations of func "ufshcd_runtime_suspend()" and "ufshcd_runtime_resume()" depended on CONFIG_PM, so the function wrappers "ufs_mtk_runtime_suspend()" and "ufs_mtk_runtime_resume()" both should warpped by CONFIG_PM too.

Reported-by: Hulk Robot <>
Fixes: e7bf1d50063c ("scsi: ufs: ufs-mediatek: Fix build warnings")
Signed-off-by: Ren Zhijie <>
drivers/ufs/host/ufs-mediatek.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
index c958279bdd8f..e006c2528a3a 100644
--- a/drivers/ufs/host/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -1427,6 +1427,7 @@ static int ufs_mtk_system_resume(struct device *dev)

+#ifdef CONFIG_PM
static int ufs_mtk_runtime_suspend(struct device *dev)
struct ufs_hba *hba = dev_get_drvdata(dev);
@@ -1449,6 +1450,7 @@ static int ufs_mtk_runtime_resume(struct device *dev)

return ufshcd_runtime_resume(dev);

static const struct dev_pm_ops ufs_mtk_pm_ops = {
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