[PATCH v10 11/18] scsi: ufs: Change the return type of ufshcd_auto_hibern8_update()

[Bart Van Assche <bvanassche@acm.org>]

A later patch will introduce an error path in ufshcd_auto_hibern8_update().
Change the return type of that function before introducing calls to that
function in the host drivers such that the host drivers only have to be
modified once.

Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Can Guo <quic_cang@quicinc.com>
Cc: Avri Altman <avri.altman@wdc.com>
Cc: Bao D. Nguyen <quic_nguyenb@quicinc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/ufs/core/ufs-sysfs.c   | 2 +-
 drivers/ufs/core/ufshcd-priv.h | 1 -
 drivers/ufs/core/ufshcd.c      | 6 ++++--
 include/ufs/ufshcd.h           | 2 +-
 4 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/ufs/core/ufs-sysfs.c b/drivers/ufs/core/ufs-sysfs.c
index 6c72075750dd..a693dea1bd18 100644
--- a/drivers/ufs/core/ufs-sysfs.c
+++ b/drivers/ufs/core/ufs-sysfs.c
@@ -203,7 +203,7 @@ static ssize_t auto_hibern8_store(struct device *dev,
 		goto out;
 	}
 
-	ufshcd_auto_hibern8_update(hba, ufshcd_us_to_ahit(timer));
+	ret = ufshcd_auto_hibern8_update(hba, ufshcd_us_to_ahit(timer));
 
 out:
 	up(&hba->host_sem);
diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h
index 0f3bd943b58b..a2b74fbc2056 100644
--- a/drivers/ufs/core/ufshcd-priv.h
+++ b/drivers/ufs/core/ufshcd-priv.h
@@ -60,7 +60,6 @@ int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode,
 		      enum attr_idn idn, u8 index, u8 selector, u32 *attr_val);
 int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
 	enum flag_idn idn, u8 index, bool *flag_res);
-void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
 void ufshcd_compl_one_cqe(struct ufs_hba *hba, int task_tag,
 			  struct cq_entry *cqe);
 int ufshcd_mcq_init(struct ufs_hba *hba);
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 129446775796..053b82eac80f 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -4337,13 +4337,13 @@ int ufshcd_uic_hibern8_exit(struct ufs_hba *hba)
 }
 EXPORT_SYMBOL_GPL(ufshcd_uic_hibern8_exit);
 
-void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit)
+int ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit)
 {
 	unsigned long flags;
 	bool update = false;
 
 	if (!ufshcd_is_auto_hibern8_supported(hba))
-		return;
+		return 0;
 
 	spin_lock_irqsave(hba->host->host_lock, flags);
 	if (hba->ahit != ahit) {
@@ -4360,6 +4360,8 @@ void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit)
 		ufshcd_release(hba);
 		ufshcd_rpm_put_sync(hba);
 	}
+
+	return 0;
 }
 EXPORT_SYMBOL_GPL(ufshcd_auto_hibern8_update);
 
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index 6dc11fa0ebb1..ffc6ffe45fe1 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -1364,7 +1364,7 @@ static inline int ufshcd_disable_host_tx_lcc(struct ufs_hba *hba)
 }
 
 void ufshcd_auto_hibern8_enable(struct ufs_hba *hba);
-void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
+int ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
 void ufshcd_fixup_dev_quirks(struct ufs_hba *hba,
 			     const struct ufs_dev_quirk *fixups);
 #define SD_ASCII_STD true