linux-kernel - [PATCH v5 2/8] scsi: ufs: remove init_prefetch_data in struct ufs

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Date:   Mon, 16 Mar 2020 11:42:12 +0800
From:   Stanley Chu <stanley.chu@...iatek.com>
To:     <linux-scsi@...r.kernel.org>, <martin.peter~sen@...cle.com>,
        <avri.altman@....com>, <alim.akhtar@...sung.com>,
        <jejb@...ux.ibm.com>
CC:     <beanhuo@...ron.com>, <asutoshd@...eaurora.org>,
        <cang@...eaurora.org>, <matthias.bgg@...il.com>,
        <bvanassche@....org>, <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <kuohong.wang@...iatek.com>,
        <peter.wang@...iatek.com>, <chun-hung.wu@...iatek.com>,
        <andy.teng@...iatek.com>, Stanley Chu <stanley.chu@...iatek.com>
Subject: [PATCH v5 2/8] scsi: ufs: remove init_prefetch_data in struct ufs_hba

Struct init_prefetch_data currently is used privately in
ufshcd_init_icc_levels(), thus it can be removed from struct ufs_hba.

Signed-off-by: Stanley Chu <stanley.chu@...iatek.com>
Reviewed-by: Asutosh Das <asutoshd@...eaurora.org>
Reviewed-by: Avri Altman <avri.altman@....com>
---
 drivers/scsi/ufs/ufshcd.c | 15 ++++++---------
 drivers/scsi/ufs/ufshcd.h | 11 -----------
 2 files changed, 6 insertions(+), 20 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 314e808b0d4e..b4988b9ee36c 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6501,6 +6501,7 @@ static void ufshcd_init_icc_levels(struct ufs_hba *hba)
 {
 	int ret;
 	int buff_len = hba->desc_size.pwr_desc;
+	u32 icc_level;
 	u8 *desc_buf;
 
 	desc_buf = kmalloc(buff_len, GFP_KERNEL);
@@ -6516,21 +6517,17 @@ static void ufshcd_init_icc_levels(struct ufs_hba *hba)
 		goto out;
 	}
 
-	hba->init_prefetch_data.icc_level =
-			ufshcd_find_max_sup_active_icc_level(hba,
-			desc_buf, buff_len);
-	dev_dbg(hba->dev, "%s: setting icc_level 0x%x",
-			__func__, hba->init_prefetch_data.icc_level);
+	icc_level =
+		ufshcd_find_max_sup_active_icc_level(hba, desc_buf, buff_len);
+	dev_dbg(hba->dev, "%s: setting icc_level 0x%x",	__func__, icc_level);
 
 	ret = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_WRITE_ATTR,
-		QUERY_ATTR_IDN_ACTIVE_ICC_LVL, 0, 0,
-		&hba->init_prefetch_data.icc_level);
+		QUERY_ATTR_IDN_ACTIVE_ICC_LVL, 0, 0, &icc_level);
 
 	if (ret)
 		dev_err(hba->dev,
 			"%s: Failed configuring bActiveICCLevel = %d ret = %d",
-			__func__, hba->init_prefetch_data.icc_level , ret);
-
+			__func__, icc_level, ret);
 out:
 	kfree(desc_buf);
 }
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 5c10777154fc..5cf79d2319a6 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -402,15 +402,6 @@ struct ufs_clk_scaling {
 	bool is_suspended;
 };
 
-/**
- * struct ufs_init_prefetch - contains data that is pre-fetched once during
- * initialization
- * @icc_level: icc level which was read during initialization
- */
-struct ufs_init_prefetch {
-	u32 icc_level;
-};
-
 #define UFS_ERR_REG_HIST_LENGTH 8
 /**
  * struct ufs_err_reg_hist - keeps history of errors
@@ -541,7 +532,6 @@ enum ufshcd_quirks {
  * @intr_mask: Interrupt Mask Bits
  * @ee_ctrl_mask: Exception event control mask
  * @is_powered: flag to check if HBA is powered
- * @init_prefetch_data: data pre-fetched during initialization
  * @eh_work: Worker to handle UFS errors that require s/w attention
  * @eeh_work: Worker to handle exception events
  * @errors: HBA errors
@@ -627,7 +617,6 @@ struct ufs_hba {
 	u32 intr_mask;
 	u16 ee_ctrl_mask;
 	bool is_powered;
-	struct ufs_init_prefetch init_prefetch_data;
 
 	/* Work Queues */
 	struct work_struct eh_work;
-- 
2.18.0