Commit cc77e2ce authored by Daniel Baumann's avatar Daniel Baumann Committed by Niklas Cassel
Browse files

ata: libata-core: Add ATA_QUIRK_NOLPM for Samsung SSD 870 QVO drives 



Disabling link power management on Samsung SSD 870 QVO drives
to make them work again after the switch of the default LPM
policy to low.

Testing so far has shown that regular Samsung SSD 870
(the non QVO variants) do not need it and work fine with
the default LPM policy.

Cc: stable@vger.kernel.org
Fixes: 7627a0ed ("ata: ahci: Drop low power policy board type")
Signed-off-by: default avatarDaniel Baumann <daniel@debian.org>
Link: https://lore.kernel.org/linux-ide/ac64a484-022c-42a0-95bc-1520333b1536@debian.org/


Signed-off-by: default avatarNiklas Cassel <cassel@kernel.org>
parent f2809aa4

drivers/ata/libata-core.c

+4 −0
Original line number Diff line number Diff line
@@ -4143,6 +4143,10 @@ static const struct ata_dev_quirks_entry __ata_dev_quirks[] = { 
	{ "Samsung SSD 860*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |

						ATA_QUIRK_ZERO_AFTER_TRIM |

						ATA_QUIRK_NO_NCQ_ON_ATI },

	{ "Samsung SSD 870 QVO*",	NULL,	ATA_QUIRK_NO_NCQ_TRIM |

						ATA_QUIRK_ZERO_AFTER_TRIM |

						ATA_QUIRK_NO_NCQ_ON_ATI |

						ATA_QUIRK_NOLPM },

	{ "Samsung SSD 870*",		NULL,	ATA_QUIRK_NO_NCQ_TRIM |

						ATA_QUIRK_ZERO_AFTER_TRIM |

						ATA_QUIRK_NO_NCQ_ON_ATI },