scsi: ufs: Allow WriteBooster on UFS 2.2 devices

According to the UFS specification, WriteBooster is officially supported by
UFS 2.2.

Since UFS 2.2 specification has been finalized in JEDEC and such devices
have also showed up in the market, modify the checking rule for
ufshcd_wb_probe() to allow these devices to enable WriteBooster.

Link: https://lore.kernel.org/r/20200522083212.4008-3-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 9e55c52..0dbd8a7 100644 (file)
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6930,6 +6930,7 @@ static int ufs_get_device_desc(struct ufs_hba *hba)
         * UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES enabled
         */
        if (dev_info->wspecversion >= 0x310 ||
+           dev_info->wspecversion == 0x220 ||
            (hba->dev_quirks & UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES))
                ufshcd_wb_probe(hba, desc_buf);