From: Bean Huo <beanhuo@micron.com>
Date: Wed, 4 Aug 2021 20:21:28 +0200
Subject: [PATCH] scsi: ufs: core: Add lu_enable sysfs node
Git-commit: f5efd4fe78de871515444b660029074be17ec11f
Patch-mainline: v5.15-rc1
References: jsc#PED-818

We need to check whether HPB is enabled on a given LU from the userspace
tool. Add lu_enable sysfs node.

Link: https://lore.kernel.org/r/20210804182128.458356-3-huobean@gmail.com
Tested-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Hannes Reinecke <hare@suse.com>
---
 drivers/scsi/ufs/ufs-sysfs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c
index 08fe037069bc..5c405ff7b6ea 100644
--- a/drivers/scsi/ufs/ufs-sysfs.c
+++ b/drivers/scsi/ufs/ufs-sysfs.c
@@ -1163,6 +1163,7 @@ static DEVICE_ATTR_RO(_pname)
 #define UFS_UNIT_DESC_PARAM(_name, _uname, _size)			\
 	UFS_LUN_DESC_PARAM(_name, _uname, UNIT, _size)
 
+UFS_UNIT_DESC_PARAM(lu_enable, _LU_ENABLE, 1);
 UFS_UNIT_DESC_PARAM(boot_lun_id, _BOOT_LUN_ID, 1);
 UFS_UNIT_DESC_PARAM(lun_write_protect, _LU_WR_PROTECT, 1);
 UFS_UNIT_DESC_PARAM(lun_queue_depth, _LU_Q_DEPTH, 1);
@@ -1181,8 +1182,8 @@ UFS_UNIT_DESC_PARAM(hpb_pinned_region_start_offset, _HPB_PIN_RGN_START_OFF, 2);
 UFS_UNIT_DESC_PARAM(hpb_number_pinned_regions, _HPB_NUM_PIN_RGNS, 2);
 UFS_UNIT_DESC_PARAM(wb_buf_alloc_units, _WB_BUF_ALLOC_UNITS, 4);
 
-
 static struct attribute *ufs_sysfs_unit_descriptor[] = {
+	&dev_attr_lu_enable.attr,
 	&dev_attr_boot_lun_id.attr,
 	&dev_attr_lun_write_protect.attr,
 	&dev_attr_lun_queue_depth.attr,
-- 
2.35.3