From 47d054580a75b7d14d275a76146ce2f41bc16a81 Mon Sep 17 00:00:00 2001
From: Stanley Chu <stanley.chu@mediatek.com>
Date: Mon, 2 Mar 2020 21:53:46 +0800
Subject: [PATCH] scsi: ufs-mediatek: fix HOST_PA_TACTIVATE quirk for Samsung
UFS Devices
Device quirk "UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE" is enabled for all
Samsung devices by default currently.
However MediaTek UFS host requires different host PA_TACTIVATE
configuration. Hence clear this quirk first and then apply vendor-specific
value in vops callback.
Link: https://lore.kernel.org/r/20200302135346.16797-1-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---
drivers/scsi/ufs/ufs-mediatek.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index de650822c9d92..3b0e575d74609 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -533,8 +533,10 @@ static int ufs_mtk_apply_dev_quirks(struct ufs_hba *hba)
struct ufs_dev_info *dev_info = &hba->dev_info;
u16 mid = dev_info->wmanufacturerid;
- if (mid == UFS_VENDOR_SAMSUNG)
+ if (mid == UFS_VENDOR_SAMSUNG) {
+ hba->dev_quirks &= ~UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE;
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 6);
+ }
/*
* Decide waiting time before gating reference clock and
--
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