linux-kernel - [PATCH] nvme: Add quirk for "SAMSUNG MZALQ128HBHQ-000L2"

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Message-Id: <20191217083430.3269-1-wuxy@bitland.com.cn>
Date:   Tue, 17 Dec 2019 16:34:30 +0800
From:   wuxy@...land.com.cn
To:     kbusch@...nel.org, axboe@...com, sagi@...mberg.me,
        linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org,
        evgreen@...omium.org, rajatja@...gle.com
Cc:     wuxy@...land.com.cn, wuxy <wuxy@...land.corp-partner.google.com>
Subject: [PATCH] nvme: Add quirk for "SAMSUNG MZALQ128HBHQ-000L2"

From: wuxy <wuxy@...land.corp-partner.google.com>

Samsung SSD with model number:SAMSUNG MZALQ128HBHQ-000L2 has no response
when doing the "suspend/resume" test.This patch applied
NVME_QUIRK_SIMPLE_SUSPEND to fix this issue.Run the 2500 cycles
"suspend/resume" test after applying this patch and the issue can not
be reproduced again.Co-work with Samsung,they will fix this issue
in future firmware.

BUG= https://partnerissuetracker.corp.google.com/issues/144257635
TEST= run 2500 cycles "suspend/resume" test,the result is passed.

Signed-off-by: Xingyu Wu <wuxy@...land.corp-partner.google.com>
---
 drivers/nvme/host/core.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 667f18f465be..d16d12abec50 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2414,6 +2414,16 @@ static const struct nvme_core_quirk_entry core_quirks[] = {
 		.vid = 0x14a4,
 		.fr = "22301111",
 		.quirks = NVME_QUIRK_SIMPLE_SUSPEND,
+	},
+	{
+		/*
+		 * This Samsung SSD encountered no repsonse issue when
+		 * running suspend to idle test.
+		 * Samsung will fix this issue in future firmware.
+		 */
+		.vid = 0x144d,
+		.mn = "SAMSUNG MZALQ128HBHQ-000L2",
+		.quirks = NVME_QUIRK_SIMPLE_SUSPEND,
 	}
 };
 
-- 
2.17.1