[PATCH v4 01/16] ufs: core: Optimize duplicate code to read extended feature

Asutosh Das
2022-11-09T19:43:20Z

The code to parse the extended feature is duplicated twice
in the ufs core. Replace the duplicated code with a
function.

Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
---
drivers/ufs/core/ufshcd.c | 21 +++++++++++++--------
1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 768cb49..c9d7b78 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -215,6 +215,17 @@ ufs_get_desired_pm_lvl_for_dev_link_state(enum ufs_dev_pwr_mode dev_state,
return UFS_PM_LVL_0;
}

+static unsigned int ufs_get_ext_ufs_feature(struct ufs_hba *hba,
+ const u8 *desc_buf)
+{
+ if (hba->desc_size[QUERY_DESC_IDN_DEVICE] <
+ DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP + 4)
+ return 0;
+
+ return get_unaligned_be32(desc_buf +
+ DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP);
+}
+
static const struct ufs_dev_quirk ufs_fixups[] = {
/* UFS cards deviations table */
{ .wmanufacturerid = UFS_VENDOR_MICRON,
@@ -7584,13 +7595,7 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, const u8 *desc_buf)
(hba->dev_quirks & UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES)))
goto wb_disabled;

- if (hba->desc_size[QUERY_DESC_IDN_DEVICE] <
- DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP + 4)
- goto wb_disabled;
-
- ext_ufs_feature = get_unaligned_be32(desc_buf +
- DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP);
-
+ ext_ufs_feature = ufs_get_ext_ufs_feature(hba, desc_buf);
if (!(ext_ufs_feature & UFS_DEV_WRITE_BOOSTER_SUP))
goto wb_disabled;

@@ -7644,7 +7649,7 @@ static void ufshcd_temp_notif_probe(struct ufs_hba *hba, const u8 *desc_buf)
if (!(hba->caps & UFSHCD_CAP_TEMP_NOTIF) || dev_info->wspecversion < 0x300)
return;

- ext_ufs_feature = get_unaligned_be32(desc_buf + DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP);
+ ext_ufs_feature = ufs_get_ext_ufs_feature(hba, desc_buf);

if (ext_ufs_feature & UFS_DEV_LOW_TEMP_NOTIF)
mask |= MASK_EE_TOO_LOW_TEMP;
--
2.7.4