linux-kernel - [PATCH v1 3/3] scsi: ufs-mediatek: Print host information for failed supsend and resume

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Message-ID: <20200615143123.6627-4-stanley.chu@mediatek.com>
Date:   Mon, 15 Jun 2020 22:31:23 +0800
From:   Stanley Chu <stanley.chu@...iatek.com>
To:     <linux-scsi@...r.kernel.org>, <martin.petersen@...cle.com>,
        <avri.altman@....com>, <alim.akhtar@...sung.com>,
        <jejb@...ux.ibm.com>, <asutoshd@...eaurora.org>
CC:     <beanhuo@...ron.com>, <cang@...eaurora.org>,
        <matthias.bgg@...il.com>, <bvanassche@....org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <kuohong.wang@...iatek.com>,
        <peter.wang@...iatek.com>, <chun-hung.wu@...iatek.com>,
        <andy.teng@...iatek.com>, <cc.chou@...iatek.com>,
        <chaotian.jing@...iatek.com>,
        Stanley Chu <stanley.chu@...iatek.com>
Subject: [PATCH v1 3/3] scsi: ufs-mediatek: Print host information for failed supsend and resume

Print host state and register dumps while suspend or resume flow
is failed.

Signed-off-by: Stanley Chu <stanley.chu@...iatek.com>
---
 drivers/scsi/ufs/ufs-mediatek.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index d56ce8d97d4e..b0f626f6f9fe 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -469,22 +469,25 @@ static int ufs_mtk_link_set_hpm(struct ufs_hba *hba)
 
 	err = ufshcd_hba_enable(hba);
 	if (err)
-		return err;
+		goto out;
 
 	err = ufs_mtk_unipro_set_pm(hba, 0);
 	if (err)
-		return err;
+		goto out;
 
 	err = ufshcd_uic_hibern8_exit(hba);
 	if (!err)
 		ufshcd_set_link_active(hba);
 	else
-		return err;
+		goto out;
 
 	err = ufshcd_make_hba_operational(hba);
 	if (err)
-		return err;
-
+		goto out;
+out:
+	if (err)
+		ufshcd_print_info(hba, UFS_INFO_HOST_STATE |
+				  UFS_INFO_HOST_REGS | UFS_INFO_PWR);
 	return 0;
 }
 
@@ -494,6 +497,9 @@ static int ufs_mtk_link_set_lpm(struct ufs_hba *hba)
 
 	err = ufs_mtk_unipro_set_pm(hba, 1);
 	if (err) {
+		ufshcd_print_info(hba, UFS_INFO_HOST_STATE |
+				  UFS_INFO_HOST_REGS | UFS_INFO_PWR);
+
 		/* Resume UniPro state for following error recovery */
 		ufs_mtk_unipro_set_pm(hba, 0);
 		return err;
-- 
2.18.0