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From: Stanley Chu <stanley.chu@mediatek.com>
To: <linux-scsi@vger.kernel.org>, <martin.petersen@oracle.com>,
	<avri.altman@wdc.com>, <alim.akhtar@samsung.com>,
	<jejb@linux.ibm.com>
Cc: <beanhuo@micron.com>, <asutoshd@codeaurora.org>,
	<cang@codeaurora.org>, <matthias.bgg@gmail.com>,
	<bvanassche@acm.org>, <linux-mediatek@lists.infradead.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <kuohong.wang@mediatek.com>,
	<peter.wang@mediatek.com>, <chun-hung.wu@mediatek.com>,
	<andy.teng@mediatek.com>, Stanley Chu <stanley.chu@mediatek.com>
Subject: [PATCH v3 1/2] scsi: ufs: export ufshcd_link_recovery for vendor's error recovery
Date: Fri, 27 Mar 2020 17:53:28 +0800
Message-ID: <20200327095329.10083-2-stanley.chu@mediatek.com> (raw)
In-Reply-To: <20200327095329.10083-1-stanley.chu@mediatek.com>

export ufshcd_link_recovery to allow vendors to recover failed link
in vendor's callbacks.

Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
---
 drivers/scsi/ufs/ufshcd.c | 3 ++-
 drivers/scsi/ufs/ufshcd.h | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index b4294b2c6f4a..227660a1a446 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -3756,7 +3756,7 @@ static int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode)
 	return ret;
 }
 
-static int ufshcd_link_recovery(struct ufs_hba *hba)
+int ufshcd_link_recovery(struct ufs_hba *hba)
 {
 	int ret;
 	unsigned long flags;
@@ -3783,6 +3783,7 @@ static int ufshcd_link_recovery(struct ufs_hba *hba)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(ufshcd_link_recovery);
 
 static int __ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
 {
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 9f1576bbfc50..b7bd81795c24 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -795,6 +795,7 @@ int ufshcd_alloc_host(struct device *, struct ufs_hba **);
 void ufshcd_dealloc_host(struct ufs_hba *);
 int ufshcd_hba_enable(struct ufs_hba *hba);
 int ufshcd_init(struct ufs_hba * , void __iomem * , unsigned int);
+int ufshcd_link_recovery(struct ufs_hba *hba);
 int ufshcd_make_hba_operational(struct ufs_hba *hba);
 void ufshcd_remove(struct ufs_hba *);
 int ufshcd_uic_hibern8_exit(struct ufs_hba *hba);
-- 
2.18.0

  reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-27  9:53 [PATCH v3 0/2] scsi: ufs: add error recovery for suspend and resume in ufs-mediatek Stanley Chu
2020-03-27  9:53 ` Stanley Chu [this message]
2020-03-27  9:53 ` [PATCH v3 2/2] scsi: ufs-mediatek: add error recovery for suspend and resume Stanley Chu
2020-03-27 17:06 ` [PATCH v3 0/2] scsi: ufs: add error recovery for suspend and resume in ufs-mediatek Martin K. Petersen

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