linux-kernel - [PATCH] scsi: ufs: Enable HOST_PA_TACTIVATE quirk for WDC UFS devices

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Message-Id: <1580977315-19321-1-git-send-email-cang@codeaurora.org>
Date:   Thu,  6 Feb 2020 00:21:50 -0800
From:   Can Guo <cang@...eaurora.org>
To:     asutoshd@...eaurora.org, nguyenb@...eaurora.org,
        hongwus@...eaurora.org, rnayak@...eaurora.org,
        linux-scsi@...r.kernel.org, kernel-team@...roid.com,
        saravanak@...gle.com, salyzyn@...gle.com, cang@...eaurora.org
Cc:     Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Bean Huo <beanhuo@...ron.com>,
        Stanley Chu <stanley.chu@...iatek.com>,
        Bart Van Assche <bvanassche@....org>,
        Venkat Gopalakrishnan <venkatg@...eaurora.org>,
        Tomas Winkler <tomas.winkler@...el.com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] scsi: ufs: Enable HOST_PA_TACTIVATE quirk for WDC UFS devices

Western Digital UFS devices require host PA_TACTIVATE to be lower than
device PA_TACTIVATE, otherwise it may get stuck during hibern8 sequence.

Signed-off-by: Can Guo <cang@...eaurora.org>

diff --git a/drivers/scsi/ufs/ufs_quirks.h b/drivers/scsi/ufs/ufs_quirks.h
index d0ab147..df7a1e6 100644
--- a/drivers/scsi/ufs/ufs_quirks.h
+++ b/drivers/scsi/ufs/ufs_quirks.h
@@ -15,6 +15,7 @@
 #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
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 1fe0a97..a066f00 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -239,6 +239,8 @@ struct ufs_pm_lvl_states ufs_pm_lvl_states[] = {
 		UFS_DEVICE_QUIRK_HOST_PA_SAVECONFIGTIME),
 	UFS_FIX(UFS_VENDOR_SKHYNIX, "hB8aL1" /*H28U62301AMR*/,
 		UFS_DEVICE_QUIRK_HOST_VS_DEBUGSAVECONFIGTIME),
+	UFS_FIX(UFS_VENDOR_WDC, UFS_ANY_MODEL,
+		UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE),
 
 	END_FIX
 };
-- 
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