libata: disable LPM for Crucial BX100 SSD 500GB drive

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@canonical.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 0162c9d..0c98594 100644 (file)
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4155,6 +4155,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
        { "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 LPM issues */
        { "Crucial_CT512MX100*",        NULL,   ATA_HORKAGE_NOLPM, },