[PATCH] libata: disable LPM for Crucial BX100 SSD drives

From: Kai-Heng Feng
Date: Thu Feb 15 2018 - 14:00:34 EST


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 drives don't work well with min_power. This also
happens to med_power_with_dipm.

So let's disable LPM for Crucial BX100 SSD drives.

BugLink: https://bugs.launchpad.net/bugs/1726930
Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
---
drivers/ata/libata-core.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 3c09122bf038..577cf820eed4 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4592,6 +4592,14 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
{ "WDC WD3000JD-*", NULL, ATA_HORKAGE_WD_BROKEN_LPM },
{ "WDC WD3200JD-*", NULL, ATA_HORKAGE_WD_BROKEN_LPM },

+ /*
+ * Crucial BX100 SSD has broken min_power and med_power_with_dipm
+ * support.
+ *
+ * https://bugs.launchpad.net/bugs/1726930
+ */
+ { "CT*BX100SSD1", NULL, ATA_HORKAGE_NOLPM },
+
/* End Marker */
{ }
};
--
2.15.1