From 63fdc72bdb6dbb98424afc0d672ccb6b800757f6 Mon Sep 17 00:00:00 2001 From: Niklas Cassel Date: Thu, 30 May 2024 23:32:44 +0200 Subject: [PATCH] ata: libata-core: Add ATA_HORKAGE_NOLPM for AMD Radeon S3 SSD BugLink: https://bugs.launchpad.net/bugs/2074091 commit 473880369304cfd4445720cdd8bae4c6f1e16e60 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 AMD Radeon S3 SSD 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 both HIPM and DIPM). Fixes: 7627a0edef54 ("ata: ahci: Drop low power policy board type") Cc: stable@vger.kernel.org Reported-by: Doru Iorgulescu Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218832 Reviewed-by: Mika Westerberg Reviewed-by: Damien Le Moal Signed-off-by: Niklas Cassel Signed-off-by: Greg Kroah-Hartman Signed-off-by: Portia Stephens Signed-off-by: Roxana Nicolescu --- drivers/ata/libata-core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index bf9c660cf64e..28caed151e05 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4203,6 +4203,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = { /* Apacer models with LPM issues */ { "Apacer AS340*", NULL, ATA_HORKAGE_NOLPM }, + /* AMD Radeon devices with broken LPM support */ + { "R3SL240G", NULL, ATA_HORKAGE_NOLPM }, + /* These specific Samsung models/firmware-revs do not handle LPM well */ { "SAMSUNG MZMPC128HBFU-000MV", "CXM14M1Q", ATA_HORKAGE_NOLPM }, { "SAMSUNG SSD PM830 mSATA *", "CXM13D1Q", ATA_HORKAGE_NOLPM },