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[95.91.252.233]) by smtp.gmail.com with ESMTPSA id e11sm19280455edj.44.2020.12.15.15.05.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Dec 2020 15:05:34 -0800 (PST) From: Bean Huo 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 v5 4/7] scsi: ufs: Remove two WB related fields from struct ufs_dev_info Date: Wed, 16 Dec 2020 00:05:16 +0100 Message-Id: <20201215230519.15158-5-huobean@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201215230519.15158-1-huobean@gmail.com> References: <20201215230519.15158-1-huobean@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Bean Huo d_wb_alloc_units and d_ext_ufs_feature_sup only be used while WB probe. They are just used to confirm the condition that "if bWriteBoosterBufferType is set to 01h but dNumSharedWriteBoosterBufferAllocUnits is set to zero, the WriteBooster feature is disabled", and if UFS device supports WB. After that, no user uses them any more. So, don't need to keep time in runtime. Signed-off-by: Bean Huo Reviewed-by: Stanley Chu --- drivers/scsi/ufs/ufs.h | 2 -- drivers/scsi/ufs/ufshcd.c | 14 ++++++-------- 2 files changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h index 14dfda735adf..a789e074ae3f 100644 --- a/drivers/scsi/ufs/ufs.h +++ b/drivers/scsi/ufs/ufs.h @@ -538,9 +538,7 @@ struct ufs_dev_info { u8 *model; u16 wspecversion; u32 clk_gating_wait_us; - u32 d_ext_ufs_feature_sup; 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 6a5532b752aa..5f08f4a59a17 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -7207,6 +7207,7 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf) struct ufs_dev_info *dev_info = &hba->dev_info; u8 lun; u32 d_lu_wb_buf_alloc; + u32 ext_ufs_feature; if (!ufshcd_is_wb_allowed(hba)) return; @@ -7224,11 +7225,10 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf) DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP + 4) goto wb_disabled; - dev_info->d_ext_ufs_feature_sup = - get_unaligned_be32(desc_buf + - DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP); + ext_ufs_feature = get_unaligned_be32(desc_buf + + DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP); - if (!(dev_info->d_ext_ufs_feature_sup & UFS_DEV_WRITE_BOOSTER_SUP)) + if (!(ext_ufs_feature & UFS_DEV_WRITE_BOOSTER_SUP)) goto wb_disabled; /* @@ -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++) {