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Commit 6a0adbd1 authored by Veerabhadrarao Badiganti's avatar Veerabhadrarao Badiganti
Browse files

scsi: ufs: Don't turn of the link for WDC devices during LPM 



WDC has confirmed that their device can't handle frequent power cycles.
So don't turn off the link for WDC devise when switching to low power
mode.

Change-Id: If2f438c5df025fc79051031ca2a098c48324ec22
Signed-off-by: default avatarVeerabhadrarao Badiganti <vbadigan@codeaurora.org>
parent 888efb8c

drivers/scsi/ufs/ufs_quirks.h

+2 −1
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2014-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2014-2020, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -24,6 +24,7 @@ 
#define UFS_VENDOR_TOSHIBA     0x198

#define UFS_VENDOR_SAMSUNG     0x1CE

#define UFS_VENDOR_SKHYNIX     0x1AD

#define UFS_VENDOR_WDC		0x145



/**

 * ufs_dev_fix - ufs device quirk info

drivers/scsi/ufs/ufshcd.c

+3 −1
Original line number Diff line number Diff line
@@ -3,7 +3,7 @@ 
 *

 * This code is based on drivers/scsi/ufs/ufshcd.c

 * Copyright (C) 2011-2013 Samsung India Software Operations

 * Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2013-2020, The Linux Foundation. All rights reserved.

 *

 * Authors:

 *	Santosh Yaraganavi <santosh.sy@samsung.com>
@@ -414,6 +414,8 @@ static struct ufs_dev_fix ufs_fixups[] = { 
		UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM),

	UFS_FIX(UFS_VENDOR_TOSHIBA, UFS_ANY_MODEL,

		UFS_DEVICE_QUIRK_NO_LINK_OFF),

	UFS_FIX(UFS_VENDOR_WDC, UFS_ANY_MODEL,

		UFS_DEVICE_QUIRK_NO_LINK_OFF),

	UFS_FIX(UFS_VENDOR_TOSHIBA, "THGLF2G9C8KBADG",

		UFS_DEVICE_QUIRK_PA_TACTIVATE),

	UFS_FIX(UFS_VENDOR_TOSHIBA, "THGLF2G9D8KBADG",