Commit 9bb25e5d authored by Bart Van Assche's avatar Bart Van Assche Committed by Martin K. Petersen
Browse files

scsi: ufs: Only include power management code if necessary 

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

Link: https://lore.kernel.org/r/20210722033439.26550-4-bvanassche@acm.org


Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Stanley Chu <stanley.chu@mediatek.com>
Cc: Can Guo <cang@codeaurora.org>
Cc: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: default avatarAvri Altman <avri.altman@wdc.com>
Reviewed-by: default avatarBean Huo <beanhuo@micron.com>
Reviewed-by: default avatarDaejun Park <daejun7.park@samsung.com>
Reviewed-by: default avatarStanley Chu <stanley.chu@mediatek.com>
Signed-off-by: default avatarBart Van Assche <bvanassche@acm.org>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent f1ecbe1e

drivers/scsi/ufs/ufshcd.c

+8 −0
Original line number Diff line number Diff line
@@ -8805,6 +8805,7 @@ 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;
@@ -8832,6 +8833,7 @@ 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)

{
@@ -9239,6 +9241,7 @@ static int ufshcd_suspend(struct ufs_hba *hba) 
	return ret;

}



#ifdef CONFIG_PM

/**

 * ufshcd_resume - helper function for resume operations

 * @hba: per adapter instance
@@ -9276,7 +9279,9 @@ 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.
@@ -9332,7 +9337,9 @@ 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.
@@ -9380,6 +9387,7 @@ int ufshcd_runtime_resume(struct device *dev) 
	return ret;

}

EXPORT_SYMBOL(ufshcd_runtime_resume);

#endif /* CONFIG_PM */



/**

 * ufshcd_shutdown - shutdown routine

drivers/scsi/ufs/ufshcd.h

+4 −0
Original line number Diff line number Diff line
@@ -1030,10 +1030,14 @@ 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,