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Patch "libata: disable LPM for Crucial BX100 SSD 500GB drive" has been added to the 3.18-stable tree

PATCH [email protected] 1 participant 1 message Mar 25, 2018

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This is a note to let you know that I've just added the patch titled

libata: disable LPM for Crucial BX100 SSD 500GB drive

to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:

     libata-disable-lpm-for-crucial-bx100-ssd-500gb-drive.patch

and it can be found in the queue-3.18 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From b17e5729a630d8326a48ec34ef02e6b4464a6aef Mon Sep 17 00:00:00 2001

From: Kai-Heng Feng <[email protected]>
Date: Sun, 18 Feb 2018 22:17:09 +0800
Subject: libata: disable LPM for Crucial BX100 SSD 500GB drive

From: Kai-Heng Feng <[email protected]>

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.

---
 drivers/ata/libata-core.c |    3 +++
 1 file changed, 3 insertions(+)
drivers/ata/libata-core.c +3 -0
@@ -4225,6 +4225,9 @@ 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_ZERO_AFTER_TRIM |

Patches currently in stable-queue which might be from [email protected] are

queue-3.18/libata-disable-lpm-for-crucial-bx100-ssd-500gb-drive.patch queue-3.18/libata-make-crucial-bx100-500gb-lpm-quirk-apply-to-all-firmware-versions.patch