2020-12-15 23:23:36

by Bean Huo

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

From: Bean Huo <[email protected]>

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 <[email protected]>
---
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

2020-12-22 06:16:41

by Can Guo

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

On 2020-12-16 07:05, Bean Huo wrote:
> From: Bean Huo <[email protected]>
>
> Delete ufshcd_wb_buf_flush_enable() and ufshcd_wb_buf_flush_disable(),
> move the implementation into ufshcd_wb_toggle_flush().
>

Reviewed-by: Can Guo <[email protected]>

> Signed-off-by: Bean Huo <[email protected]>
> ---
> 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;
> }