RE: [PATCH v1 1/2] scsi: ufs: export hibern8 entry and exit

-----Original Message-----
From: nguyenb=codeaurora.org@mg.codeaurora.org
[mailto:nguyenb=codeaurora.org@mg.codeaurora.org] On Behalf Of Bao D.
Nguyen
Sent: Tuesday, September 21, 2021 2:38 AM
To: cang@codeaurora.org; asutoshd@codeaurora.org;
martin.petersen@oracle.com; linux-scsi@vger.kernel.org
Cc: linux-arm-msm@vger.kernel.org; Bao D . Nguyen
[off-list ref]; Alim Akhtar [off-list ref]; Avri
Altman [off-list ref]; James E.J. Bottomley [off-list ref];
Bean Huo [off-list ref]; Stanley Chu [off-list ref];
Bart Van Assche [off-list ref]; Jaegeuk Kim [off-list ref];
Adrian Hunter [off-list ref]; Keoseong Park
[off-list ref]; open list [off-list ref]
Subject: [PATCH v1 1/2] scsi: ufs: export hibern8 entry and exit

From: Asutosh Das <redacted>

Qualcomm controllers need to be in hibern8 before scaling up or down the
clocks. Hence, export the hibern8 entry and exit functions.

Signed-off-by: Asutosh Das <redacted>
Signed-off-by: Bao D. Nguyen <redacted>
---
drivers/scsi/ufs/ufshcd.c | 4 ++--
drivers/scsi/ufs/ufshcd.h | 2 ++
2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index

3841ab49..f3aad32 100644

--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c

@@ -227,7 +227,6 @@ static void ufshcd_hba_exit(struct ufs_hba *hba);

int ufshcd_clear_ua_wluns(struct ufs_hba *hba);  static int
ufshcd_probe_hba(struct ufs_hba *hba, bool async);  static int
ufshcd_setup_clocks(struct ufs_hba *hba, bool on); -static int
ufshcd_uic_hibern8_enter(struct ufs_hba *hba);  static inline void
ufshcd_add_delay_before_dme_cmd(struct ufs_hba *hba);  static int
ufshcd_host_reset_and_restore(struct ufs_hba *hba);  static void
ufshcd_resume_clkscaling(struct ufs_hba *hba); @@ -4116,7 +4115,7 @@ int
ufshcd_link_recovery(struct ufs_hba *hba)  }
EXPORT_SYMBOL_GPL(ufshcd_link_recovery);

-static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
+int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
{
	int ret;
	struct uic_command uic_cmd = {0};

@@ -4138,6 +4137,7 @@ static int ufshcd_uic_hibern8_enter(struct ufs_hba

*hba)

	return ret;
}
+EXPORT_SYMBOL_GPL(ufshcd_uic_hibern8_enter);

int ufshcd_uic_hibern8_exit(struct ufs_hba *hba)  { diff --git
a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index

100644

--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h

@@ -1397,4 +1397,6 @@ static inline int ufshcd_rpmb_rpm_put(struct ufs_hba

*hba)
	return pm_runtime_put(&hba->sdev_rpmb->sdev_gendev);
}

+int ufshcd_uic_hibern8_enter(struct ufs_hba *hba); int
+ufshcd_uic_hibern8_exit(struct ufs_hba *hba);