[PATCH v3 03/18] scsi: ufs: Only include power management code if necessary

[Bart Van Assche <bvanassche@xxxxxxx>]

This patch slightly reduces the UFS driver size if built with power
management support disabled.

Reviewed-by: Avri Altman <avri.altman@xxxxxxx>
Reviewed-by: Bean Huo <beanhuo@xxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Stanley Chu <stanley.chu@xxxxxxxxxxxx>
Cc: Can Guo <cang@xxxxxxxxxxxxxx>
Cc: Asutosh Das <asutoshd@xxxxxxxxxxxxxx>
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
 drivers/scsi/ufs/ufshcd.c | 8 ++++++++
 drivers/scsi/ufs/ufshcd.h | 4 ++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 58b1742ec9b9..0503ebe197f6 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -8740,6 +8740,7 @@ static void ufshcd_vreg_set_lpm(struct ufs_hba *hba)
 		usleep_range(5000, 5100);
 }
 
+#ifdef CONFIG_PM
 static int ufshcd_vreg_set_hpm(struct ufs_hba *hba)
 {
 	int ret = 0;
@@ -8767,6 +8768,7 @@ static int ufshcd_vreg_set_hpm(struct ufs_hba *hba)
 out:
 	return ret;
 }
+#endif /* CONFIG_PM */
 
 static void ufshcd_hba_vreg_set_lpm(struct ufs_hba *hba)
 {
@@ -9169,6 +9171,7 @@ static int ufshcd_suspend(struct ufs_hba *hba)
 	return ret;
 }
 
+#ifdef CONFIG_PM
 /**
  * ufshcd_resume - helper function for resume operations
  * @hba: per adapter instance
@@ -9206,7 +9209,9 @@ static int ufshcd_resume(struct ufs_hba *hba)
 		ufshcd_update_evt_hist(hba, UFS_EVT_RESUME_ERR, (u32)ret);
 	return ret;
 }
+#endif /* CONFIG_PM */
 
+#ifdef CONFIG_PM_SLEEP
 /**
  * ufshcd_system_suspend - system suspend callback
  * @dev: Device associated with the UFS controller.
@@ -9262,7 +9267,9 @@ int ufshcd_system_resume(struct device *dev)
 	return ret;
 }
 EXPORT_SYMBOL(ufshcd_system_resume);
+#endif /* CONFIG_PM_SLEEP */
 
+#ifdef CONFIG_PM
 /**
  * ufshcd_runtime_suspend - runtime suspend callback
  * @dev: Device associated with the UFS controller.
@@ -9310,6 +9317,7 @@ int ufshcd_runtime_resume(struct device *dev)
 	return ret;
 }
 EXPORT_SYMBOL(ufshcd_runtime_resume);
+#endif /* CONFIG_PM */
 
 /**
  * ufshcd_shutdown - shutdown routine
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index cc971aebb9da..0a3afd9499c9 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -1001,10 +1001,14 @@ static inline u8 ufshcd_wb_get_query_index(struct ufs_hba *hba)
 	return 0;
 }
 
+#ifdef CONFIG_PM
 extern int ufshcd_runtime_suspend(struct device *dev);
 extern int ufshcd_runtime_resume(struct device *dev);
+#endif
+#ifdef CONFIG_PM_SLEEP
 extern int ufshcd_system_suspend(struct device *dev);
 extern int ufshcd_system_resume(struct device *dev);
+#endif
 extern int ufshcd_shutdown(struct ufs_hba *hba);
 extern int ufshcd_dme_configure_adapt(struct ufs_hba *hba,
 				      int agreed_gear,