Skip to content

Commit 86aaa7e

Browse files
committed
ata: libata-core: Add ATA_HORKAGE_NOLPM for Crucial CT240BX500SSD1
Commit 7627a0e ("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: 7627a0e ("ata: ahci: Drop low power policy board type") Cc: [email protected] Reported-by: Aarrayy <[email protected]> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218832 Reviewed-by: Mika Westerberg <[email protected]> Reviewed-by: Damien Le Moal <[email protected]> Signed-off-by: Niklas Cassel <[email protected]>
1 parent 9e2f46c commit 86aaa7e

File tree

1 file changed

+2
-1
lines changed

1 file changed

+2
-1
lines changed

drivers/ata/libata-core.c

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -4136,8 +4136,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
41364136
{ "PIONEER BD-RW BDR-207M", NULL, ATA_HORKAGE_NOLPM },
41374137
{ "PIONEER BD-RW BDR-205", NULL, ATA_HORKAGE_NOLPM },
41384138

4139-
/* Crucial BX100 SSD 500GB has broken LPM support */
4139+
/* Crucial devices with broken LPM support */
41404140
{ "CT500BX100SSD1", NULL, ATA_HORKAGE_NOLPM },
4141+
{ "CT240BX500SSD1", NULL, ATA_HORKAGE_NOLPM },
41414142

41424143
/* 512GB MX100 with MU01 firmware has both queued TRIM and LPM issues */
41434144
{ "Crucial_CT512MX100*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM |

0 commit comments

Comments
 (0)