linux-kernel - [PATCH 3.16 274/410] libata: disable LPM for Crucial BX100 SSD 500GB drive

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Message-ID: <lsq.1528380321.413492161@decadent.org.uk>
Date:   Thu, 07 Jun 2018 15:05:21 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Kai-Heng Feng" <kai.heng.feng@...onical.com>,
        "Tejun Heo" <tj@...nel.org>
Subject: [PATCH 3.16 274/410] libata: disable LPM for Crucial BX100 SSD
 500GB drive

3.16.57-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Kai-Heng Feng <kai.heng.feng@...onical.com>

commit b17e5729a630d8326a48ec34ef02e6b4464a6aef upstream.

After Laptop Mode Tools starts to use min_power for LPM, a user found
out Crucial BX100 SSD can't get mounted.

Crucial BX100 SSD 500GB drive don't work well with min_power. This also
happens to med_power_with_dipm.

So let's disable LPM for Crucial BX100 SSD 500GB drive.

BugLink: https://bugs.launchpad.net/bugs/1726930
Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
Signed-off-by: Tejun Heo <tj@...nel.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/ata/libata-core.c | 3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4224,6 +4224,9 @@ static const struct ata_blacklist_entry
 	{ "PIONEER DVD-RW  DVR-212D",	NULL,	ATA_HORKAGE_NOSETXFER },
 	{ "PIONEER DVD-RW  DVR-216D",	NULL,	ATA_HORKAGE_NOSETXFER },
 
+	/* Crucial BX100 SSD 500GB has broken LPM support */
+	{ "CT500BX100SSD1",		"MU02",	ATA_HORKAGE_NOLPM },
+
 	/* The 512GB version of the MX100 has both queued TRIM and LPM issues */
 	{ "Crucial_CT512MX100*",	NULL,	ATA_HORKAGE_NO_NCQ_TRIM |
 						ATA_HORKAGE_NOLPM, },