6.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Niklas Cassel <cassel@xxxxxxxxxx>
commit 86aaa7e9d641c1ad1035ed2df88b8d0b48c86b30 upstream.
Commit 7627a0edef54 ("ata: ahci: Drop low power policy board type")
dropped the board_ahci_low_power board type, and instead enables LPM if:
-The AHCI controller reports that it supports LPM (Partial/Slumber), and
-CONFIG_SATA_MOBILE_LPM_POLICY != 0, and
-The port is not defined as external in the per port PxCMD register, and
-The port is not defined as hotplug capable in the per port PxCMD
register.
Partial and Slumber LPM states can either be initiated by HIPM or DIPM.
For HIPM (host initiated power management) to get enabled, both the AHCI
controller and the drive have to report that they support HIPM.
For DIPM (device initiated power management) to get enabled, only the
drive has to report that it supports DIPM. However, the HBA will reject
device requests to enter LPM states which the HBA does not support.
The problem is that Crucial CT240BX500SSD1 drives do not handle low power
modes correctly. The problem was most likely not seen before because no
one had used this drive with a AHCI controller with LPM enabled.
Add a quirk so that we do not enable LPM for this drive, since we see
command timeouts if we do (even though the drive claims to support DIPM).
Fixes: 7627a0edef54 ("ata: ahci: Drop low power policy board type")
Cc: stable@xxxxxxxxxxxxxxx
Reported-by: Aarrayy <lp610mh@xxxxxxxxx>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218832
Reviewed-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Reviewed-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
Signed-off-by: Niklas Cassel <cassel@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/ata/libata-core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4180,8 +4180,9 @@ static const struct ata_blacklist_entry
{ "PIONEER BD-RW BDR-207M", NULL, ATA_HORKAGE_NOLPM },
{ "PIONEER BD-RW BDR-205", NULL, ATA_HORKAGE_NOLPM },
- /* Crucial BX100 SSD 500GB has broken LPM support */
+ /* Crucial devices with broken LPM support */
{ "CT500BX100SSD1", NULL, ATA_HORKAGE_NOLPM },
+ { "CT240BX500SSD1", NULL, ATA_HORKAGE_NOLPM },
/* 512GB MX100 with MU01 firmware has both queued TRIM and LPM issues */
{ "Crucial_CT512MX100*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM |
