From: Bean Huo <huobean@gmail.com>
To: alim.akhtar@samsung.com, avri.altman@wdc.com,
asutoshd@codeaurora.org, jejb@linux.ibm.com,
martin.petersen@oracle.com, stanley.chu@mediatek.com,
beanhuo@micron.com, bvanassche@acm.org, tomas.winkler@intel.com,
cang@codeaurora.org
Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v4 4/6] scsi: ufs: Remove d_wb_alloc_units from struct ufs_dev_info
Date: Fri, 11 Dec 2020 15:00:33 +0100 [thread overview]
Message-ID: <20201211140035.20016-5-huobean@gmail.com> (raw)
In-Reply-To: <20201211140035.20016-1-huobean@gmail.com>
From: Bean Huo <beanhuo@micron.com>
d_wb_alloc_units only be used while WB probe, just used to confirm the
condition that "if bWriteBoosterBufferType is set to 01h but
dNumSharedWriteBoosterBufferAllocUnits is set to zero, the WriteBooster
feature is disabled". So, don't need to keep it in runtime.
Signed-off-by: Bean Huo <beanhuo@micron.com>
---
drivers/scsi/ufs/ufs.h | 1 -
drivers/scsi/ufs/ufshcd.c | 6 ++----
2 files changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index 45bebca29fdd..8ed342e43883 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -544,7 +544,6 @@ struct ufs_dev_info {
bool wb_buf_flush_enabled;
u8 wb_dedicated_lu;
u8 b_wb_buffer_type;
- u32 d_wb_alloc_units;
bool b_rpm_dev_flush_capable;
u8 b_presrv_uspc_en;
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 528c257df48c..0998e6103cd7 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -7243,10 +7243,8 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf)
desc_buf[DEVICE_DESC_PARAM_WB_PRESRV_USRSPC_EN];
if (dev_info->b_wb_buffer_type == WB_BUF_MODE_SHARED) {
- dev_info->d_wb_alloc_units =
- get_unaligned_be32(desc_buf +
- DEVICE_DESC_PARAM_WB_SHARED_ALLOC_UNITS);
- if (!dev_info->d_wb_alloc_units)
+ if (!get_unaligned_be32(desc_buf +
+ DEVICE_DESC_PARAM_WB_SHARED_ALLOC_UNITS))
goto wb_disabled;
} else {
for (lun = 0; lun < UFS_UPIU_MAX_WB_LUN_ID; lun++) {
--
2.17.1
next prev parent reply other threads:[~2020-12-11 14:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-11 14:00 [PATCH v4 0/6] Several changes for UFS WriteBooster Bean Huo
2020-12-11 14:00 ` [PATCH v4 1/6] scsi: ufs: Add "wb_on" sysfs node to control WB on/off Bean Huo
2020-12-15 10:32 ` Greg KH
2020-12-15 19:56 ` Bean Huo
2020-12-11 14:00 ` [PATCH v4 2/6] scsi: ufs: Changes comment in the function ufshcd_wb_probe() Bean Huo
2020-12-11 14:00 ` [PATCH v4 3/6] scsi: ufs: Group UFS WB related flags to struct ufs_dev_info Bean Huo
2020-12-15 9:01 ` Stanley Chu
2020-12-15 9:42 ` Bean Huo
2020-12-15 10:11 ` Stanley Chu
2020-12-11 14:00 ` Bean Huo [this message]
2020-12-15 8:57 ` [PATCH v4 4/6] scsi: ufs: Remove d_wb_alloc_units from " Stanley Chu
2020-12-15 9:59 ` Bean Huo
2020-12-11 14:00 ` [PATCH v4 5/6] scsi: ufs: Cleanup WB buffer flush toggle implementation Bean Huo
2020-12-15 9:07 ` Stanley Chu
2020-12-15 9:28 ` Bean Huo
2020-12-11 14:00 ` [PATCH v4 6/6] scsi: ufs: Keep device active mode only fWriteBoosterBufferFlushDuringHibernate == 1 Bean Huo
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