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 4.4-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-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b17e5729a630d8326a48ec34ef02e6b4464a6aef Mon Sep 17 00:00:00 2001
From: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
Date: Sun, 18 Feb 2018 22:17:09 +0800
Subject: libata: disable LPM for Crucial BX100 SSD 500GB drive
From: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
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@xxxxxxxxxxxxx>
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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_ZERO_AFTER_TRIM |
Patches currently in stable-queue which might be from kai.heng.feng@xxxxxxxxxxxxx are
queue-4.4/libata-disable-lpm-for-crucial-bx100-ssd-500gb-drive.patch
queue-4.4/libata-make-crucial-bx100-500gb-lpm-quirk-apply-to-all-firmware-versions.patch