linux-kernel - [PATCH v2] libata: Apply NOLPM quirk for SAMSUNG MZ7TD256HAFV-000L9

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Message-Id: <20181026015804.4120-1-diego.viola@gmail.com>
Date:   Thu, 25 Oct 2018 22:58:04 -0300
From:   Diego Viola <diego.viola@...il.com>
To:     hdegoede@...hat.com
Cc:     axboe@...nel.dk, tj@...nel.org, linux-kernel@...r.kernel.org,
        Diego Viola <diego.viola@...il.com>
Subject: [PATCH v2] libata: Apply NOLPM quirk for SAMSUNG MZ7TD256HAFV-000L9

med_power_with_dipm causes my T450 to freeze with a SAMSUNG
MZ7TD256HAFV-000L9 SSD (firmware DXT02L5Q).

Switching the LPM to max_performance fixes this issue.

Signed-off-by: Diego Viola <diego.viola@...il.com>
---
 drivers/ata/libata-core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index a9dd4ea7467d..a7f5202a4815 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4553,6 +4553,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
 	/* These specific Samsung models/firmware-revs do not handle LPM well */
 	{ "SAMSUNG MZMPC128HBFU-000MV", "CXM14M1Q", ATA_HORKAGE_NOLPM, },
 	{ "SAMSUNG SSD PM830 mSATA *",  "CXM13D1Q", ATA_HORKAGE_NOLPM, },
+	{ "SAMSUNG MZ7TD256HAFV-000L9", NULL,       ATA_HORKAGE_NOLPM, },
 
 	/* devices that don't properly handle queued TRIM commands */
 	{ "Micron_M500IT_*",		"MU01",	ATA_HORKAGE_NO_NCQ_TRIM |
-- 
2.19.1