linux-kernel - [PATCH 4.9 099/116] scsi: ufs: Fix ufshcd_probe_hba() reture value in case ufshcd_scsi_add

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Date:   Thu, 13 Feb 2020 07:20:43 -0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Asutosh Das <asutoshd@...eaurora.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Stanley Chu <stanley.chu@...iatek.com>,
        Bean Huo <beanhuo@...ron.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Subject: [PATCH 4.9 099/116] scsi: ufs: Fix ufshcd_probe_hba() reture value in case ufshcd_scsi_add_wlus() fails

From: Bean Huo <beanhuo@...ron.com>

commit b9fc5320212efdfb4e08b825aaa007815fd11d16 upstream.

A non-zero error value likely being returned by ufshcd_scsi_add_wlus() in
case of failure of adding the WLs, but ufshcd_probe_hba() doesn't use this
value, and doesn't report this failure to upper caller.  This patch is to
fix this issue.

Fixes: 2a8fa600445c ("ufs: manually add well known logical units")
Link: https://lore.kernel.org/r/20200120130820.1737-2-huobean@gmail.com
Reviewed-by: Asutosh Das <asutoshd@...eaurora.org>
Reviewed-by: Alim Akhtar <alim.akhtar@...sung.com>
Reviewed-by: Stanley Chu <stanley.chu@...iatek.com>
Signed-off-by: Bean Huo <beanhuo@...ron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/scsi/ufs/ufshcd.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -5347,7 +5347,8 @@ static int ufshcd_probe_hba(struct ufs_h
 			ufshcd_init_icc_levels(hba);

 		/* Add required well known logical units to scsi mid layer */
-		if (ufshcd_scsi_add_wlus(hba))
+		ret = ufshcd_scsi_add_wlus(hba);
+		if (ret)
 			goto out;

 		scsi_scan_host(hba->host);