Re: [PATCH v2 2/2] scsi: ufs: Use the resource-managed function to add devfreq device

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On 2016-11-08 01:16, Chanwoo Choi wrote:
This patch uses the resource-managed to add the devfreq device.
This function will make it easy to handle the devfreq device.

- struct devfreq *devm_devfreq_add_device(struct device *dev,
				  struct devfreq_dev_profile *profile,
				  const char *governor_name,
				  void *data);
Cc: Vinayak Holikatti <vinholikatti@xxxxxxxxx>
Cc: James E.J. Bottomley <jejb@xxxxxxxxxxxxxxxxxx>
Cc: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Cc: linux-scsi@xxxxxxxxxxxxxxx
Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
---
 drivers/scsi/ufs/ufshcd.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index e491c4bda32f..e8c5ba274830 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6250,8 +6250,6 @@ void ufshcd_remove(struct ufs_hba *hba)
 	ufshcd_hba_stop(hba, true);

 	ufshcd_exit_clk_gating(hba);
-	if (ufshcd_is_clkscaling_enabled(hba))
-		devfreq_remove_device(hba->devfreq);
 	ufshcd_hba_exit(hba);
 }
 EXPORT_SYMBOL_GPL(ufshcd_remove);
@@ -6579,7 +6577,7 @@ int ufshcd_init(struct ufs_hba *hba, void
__iomem *mmio_base, unsigned int irq)
 	}

 	if (ufshcd_is_clkscaling_enabled(hba)) {
-		hba->devfreq = devfreq_add_device(dev, &ufs_devfreq_profile,
+		hba->devfreq = devm_devfreq_add_device(dev, &ufs_devfreq_profile,
 						   "simple_ondemand", NULL);
 		if (IS_ERR(hba->devfreq)) {
 			dev_err(hba->dev, "Unable to register with devfreq %ld\n",

LGTM.
Reviewed-by: Subhash Jadavani <subhashj@xxxxxxxxxxxxxx>

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