[PATCH v5 4/6] scsi: ufs: wb: Add ufshcd_is_wb_buf_flush_allowed()

From: Jinyoung CHOI
Date: Fri Jul 29 2022 - 00:57:07 EST


The explicit flushing should check the following.
- UFSHCD_CAP_WB_EN
- UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL

Changed to improve readability.

Acked-by: Bean Huo <beanhuo@xxxxxxxxxx>
Reviewed-by: Avri Altman <avri.altman@xxxxxxx>
Signed-off-by: Jinyoung Choi <j-young.choi@xxxxxxxxxxx>
---
drivers/ufs/core/ufs-sysfs.c | 3 +--
drivers/ufs/core/ufshcd-priv.h | 6 ++++++
drivers/ufs/core/ufshcd.c | 5 +++--
3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/ufs/core/ufs-sysfs.c b/drivers/ufs/core/ufs-sysfs.c
index 920094665f4d..63b02b2541c8 100644
--- a/drivers/ufs/core/ufs-sysfs.c
+++ b/drivers/ufs/core/ufs-sysfs.c
@@ -271,8 +271,7 @@ static ssize_t wb_buf_flush_en_store(struct device *dev,
unsigned int wb_buf_flush_en;
ssize_t res;

- if (!ufshcd_is_wb_allowed(hba) ||
- (hba->quirks & UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL)) {
+ if (!ufshcd_is_wb_buf_flush_allowed(hba)) {
dev_warn(dev, "It is not allowed to configure WB buf flush!\n");
return -EOPNOTSUPP;
}
diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h
index 8f67db202d7b..d00dba17297d 100644
--- a/drivers/ufs/core/ufshcd-priv.h
+++ b/drivers/ufs/core/ufshcd-priv.h
@@ -26,6 +26,12 @@ static inline u8 ufshcd_wb_get_query_index(struct ufs_hba *hba)
return 0;
}

+static inline bool ufshcd_is_wb_buf_flush_allowed(struct ufs_hba *hba)
+{
+ return ufshcd_is_wb_allowed(hba) &&
+ !(hba->quirks & UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL);
+}
+
#ifdef CONFIG_SCSI_UFS_HWMON
void ufs_hwmon_probe(struct ufs_hba *hba, u8 mask);
void ufs_hwmon_remove(struct ufs_hba *hba);
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 36d4708eaee0..584e246c769a 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -294,7 +294,8 @@ static void ufshcd_wb_set_default_flags(struct ufs_hba *hba)
ufshcd_wb_toggle(hba, true);

ufshcd_wb_toggle_buf_flush_during_h8(hba, true);
- if (!(hba->quirks & UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL))
+
+ if (ufshcd_is_wb_buf_flush_allowed(hba))
ufshcd_wb_toggle_buf_flush(hba, true);
}

@@ -5815,7 +5816,7 @@ static bool ufshcd_wb_presrv_usrspc_keep_vcc_on(struct ufs_hba *hba,

static void ufshcd_wb_force_disable(struct ufs_hba *hba)
{
- if (!(hba->quirks & UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL))
+ if (ufshcd_is_wb_buf_flush_allowed(hba))
ufshcd_wb_toggle_buf_flush(hba, false);

ufshcd_wb_toggle_buf_flush_during_h8(hba, false);
--
2.25.1