[PATCH] ata: libata-core: Disable LPM on Silicon Motion MD619HXCLDE3TC

[Niklas Cassel <cassel@kernel.org>]

According to a user report, the Silicon Motion MD619HXCLDE3TC SSD has
problems with LPM.

Reported-by: Yihang Li <liyihang9@h-partners.com>
Closes: https://lore.kernel.org/linux-ide/20251121073502.3388239-1-liyihang9@h-partners.com/
Signed-off-by: Niklas Cassel <cassel@kernel.org>
---
Hello Yihang Li,

Please test this patch.

Before we apply this patch, it would be nice if you could try another SSD,
that supports LPM (HIPM and DIPM) with your AHCI controller:
Huawei Technologies Co., Ltd. HiSilicon AHCI HBA [19e5:a235] (rev 30)

Note: You can see if your drive supports HIPM and DIPM from the
ata_dev_print_features() print to dmesg during boot, e.g.:
ata6.00: Features: Trust Dev-Sleep HIPM DIPM NCQ-sndrcv NCQ-prio

Just so we can verify that it is the MD619HXCLDE3TC SSD that is not
handling LPM correctly, and that it is not the AHCI HBA that is at fault.

E.g. there have been some weird bugs with this AHCI controller before,
see e.g. 234e6d2c18f5 ("ata: ahci: Disable SXS for Hisilicon Kunpeng920").


 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 f48fb63d7e85..a8f4d5db2c9b 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4216,6 +4216,9 @@ static const struct ata_dev_quirks_entry __ata_dev_quirks[] = {
 	/* Apacer models with LPM issues */
 	{ "Apacer AS340*",		NULL,	ATA_QUIRK_NOLPM },
 
+	/* Silicon Motion models with LPM issues */
+	{ "MD619HXCLDE3TC",		"ID",	ATA_QUIRK_NOLPM },
+
 	/* These specific Samsung models/firmware-revs do not handle LPM well */
 	{ "SAMSUNG MZMPC128HBFU-000MV", "CXM14M1Q", ATA_QUIRK_NOLPM },
 	{ "SAMSUNG SSD PM830 mSATA *",  "CXM13D1Q", ATA_QUIRK_NOLPM },
-- 
2.52.0