[PATCH 4.19 07/52] scsi: ufs: Fix ufshcd_probe_hba() reture value in case ufshcd_scsi_add_wlus() fails

From: Greg Kroah-Hartman
Date: Thu Feb 13 2020 - 10:38:24 EST


From: Bean Huo <beanhuo@xxxxxxxxxx>

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@xxxxxxxxx
Reviewed-by: Asutosh Das <asutoshd@xxxxxxxxxxxxxx>
Reviewed-by: Alim Akhtar <alim.akhtar@xxxxxxxxxxx>
Reviewed-by: Stanley Chu <stanley.chu@xxxxxxxxxxxx>
Signed-off-by: Bean Huo <beanhuo@xxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
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
@@ -6685,7 +6685,8 @@ 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;

/* Initialize devfreq after UFS device is detected */