[PATCH 5.4 041/107] scsi: ufs: Add DELAY_BEFORE_LPM quirk for Micron devices

[Greg Kroah-Hartman]

From: Stanley Chu <stanley.chu@xxxxxxxxxxxx>

[ Upstream commit c0a18ee0ce78d7957ec1a53be35b1b3beba80668 ]

It is confirmed that Micron device needs DELAY_BEFORE_LPM quirk to have a
delay before VCC is powered off. Sdd Micron vendor ID and this quirk for
Micron devices.

Link: https://lore.kernel.org/r/20200612012625.6615-2-stanley.chu@xxxxxxxxxxxx
Reviewed-by: Bean Huo <beanhuo@xxxxxxxxxx>
Reviewed-by: Alim Akhtar <alim.akhtar@xxxxxxxxxxx>
Signed-off-by: Stanley Chu <stanley.chu@xxxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/scsi/ufs/ufs_quirks.h | 1 +
 drivers/scsi/ufs/ufshcd.c     | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/scsi/ufs/ufs_quirks.h b/drivers/scsi/ufs/ufs_quirks.h
index fe6cad9b2a0d2..03985919150b9 100644
--- a/drivers/scsi/ufs/ufs_quirks.h
+++ b/drivers/scsi/ufs/ufs_quirks.h
@@ -12,6 +12,7 @@
 #define UFS_ANY_VENDOR 0xFFFF
 #define UFS_ANY_MODEL  "ANY_MODEL"
 
+#define UFS_VENDOR_MICRON      0x12C
 #define UFS_VENDOR_TOSHIBA     0x198
 #define UFS_VENDOR_SAMSUNG     0x1CE
 #define UFS_VENDOR_SKHYNIX     0x1AD
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 2b6853c7375c9..b41b88bcab3d9 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -217,6 +217,8 @@ ufs_get_desired_pm_lvl_for_dev_link_state(enum ufs_dev_pwr_mode dev_state,
 
 static struct ufs_dev_fix ufs_fixups[] = {
 	/* UFS cards deviations table */
+	UFS_FIX(UFS_VENDOR_MICRON, UFS_ANY_MODEL,
+		UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM),
 	UFS_FIX(UFS_VENDOR_SAMSUNG, UFS_ANY_MODEL,
 		UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM),
 	UFS_FIX(UFS_VENDOR_SAMSUNG, UFS_ANY_MODEL,
-- 
2.25.1