diff mbox series

[v3,2/5] scsi: ufs: Allow WriteBooster on UFS 2.2 devices

Message ID 20200516174615.15445-3-stanley.chu@mediatek.com (mailing list archive)
State New, archived
Headers show
Series scsi: ufs: Fix WriteBooster and cleanup UFS driver | expand

Commit Message

Stanley Chu May 16, 2020, 5:46 p.m. UTC 
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.

Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
 drivers/scsi/ufs/ufshcd.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Avri Altman May 17, 2020, 6:12 a.m. UTC | #1 
> 
> 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.
> 
> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
diff mbox series

Patch

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 4a3f3648c64f..f7fa571020da 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6925,6 +6925,7 @@  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);