[PATCH v5 6/7] scsi: ufs: Cleanup WB buffer flush toggle implementation

Bean Huo
2020-12-15T23:15:38Z

From: Bean Huo <beanhuo@micron.com>

Delete ufshcd_wb_buf_flush_enable() and ufshcd_wb_buf_flush_disable(),
move the implementation into ufshcd_wb_toggle_flush().

Signed-off-by: Bean Huo <beanhuo@micron.com>
---
drivers/scsi/ufs/ufshcd.c | 66 +++++++++++++--------------------------
1 file changed, 21 insertions(+), 45 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 466a85051d54..ba8298f0d017 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -244,10 +244,8 @@ static int ufshcd_setup_vreg(struct ufs_hba *hba, bool on);
static inline int ufshcd_config_vreg_hpm(struct ufs_hba *hba,
struct ufs_vreg *vreg);
static int ufshcd_try_to_abort_task(struct ufs_hba *hba, int tag);
-static int ufshcd_wb_buf_flush_enable(struct ufs_hba *hba);
-static int ufshcd_wb_buf_flush_disable(struct ufs_hba *hba);
static int ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set);
-static inline void ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable);
+static inline int ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable);
static void ufshcd_hba_vreg_set_lpm(struct ufs_hba *hba);
static void ufshcd_hba_vreg_set_hpm(struct ufs_hba *hba);

@@ -5398,60 +5396,38 @@ static int ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set)
index, NULL);
}

-static inline void ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable)
-{
- if (hba->quirks & UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL)
- return;
-
- if (enable)
- ufshcd_wb_buf_flush_enable(hba);
- else
- ufshcd_wb_buf_flush_disable(hba);
-
-}
-
-static int ufshcd_wb_buf_flush_enable(struct ufs_hba *hba)
+static inline int ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable)
{
int ret;
u8 index;
+ enum query_opcode opcode;

- if (!ufshcd_is_wb_allowed(hba) || hba->dev_info.wb_buf_flush_enabled)
+ if (hba->quirks & UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL)
return 0;

- index = ufshcd_wb_get_query_index(hba);
- ret = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_SET_FLAG,
- QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN,
- index, NULL);
- if (ret)
- dev_err(hba->dev, "%s WB - buf flush enable failed %d\n",
- __func__, ret);
- else
- hba->dev_info.wb_buf_flush_enabled = true;
-
- dev_dbg(hba->dev, "WB - Flush enabled: %d\n", ret);
- return ret;
-}
-
-static int ufshcd_wb_buf_flush_disable(struct ufs_hba *hba)
-{
- int ret;
- u8 index;
-
- if (!ufshcd_is_wb_allowed(hba) || !hba->dev_info.wb_buf_flush_enabled)
+ if (!ufshcd_is_wb_allowed(hba) ||
+ hba->dev_info.wb_buf_flush_enabled == enable)
return 0;

+ if (enable)
+ opcode = UPIU_QUERY_OPCODE_SET_FLAG;
+ else
+ opcode = UPIU_QUERY_OPCODE_CLEAR_FLAG;
+
index = ufshcd_wb_get_query_index(hba);
- ret = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_CLEAR_FLAG,
- QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN,
- index, NULL);
+ ret = ufshcd_query_flag_retry(hba, opcode,
+ QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN, index,
+ NULL);
if (ret) {
- dev_warn(hba->dev, "%s: WB - buf flush disable failed %d\n",
- __func__, ret);
- } else {
- hba->dev_info.wb_buf_flush_enabled = false;
- dev_dbg(hba->dev, "WB - Flush disabled: %d\n", ret);
+ dev_err(hba->dev, "%s WB-Buf Flush %s failed %d\n", __func__,
+ enable ? "enable" : "disable", ret);
+ goto out;
}

+ hba->dev_info.wb_buf_flush_enabled = enable;
+
+ dev_dbg(hba->dev, "WB-Buf Flush %s\n", enable ? "enabled" : "disabled");
+out:
return ret;
}

--
2.17.1