Commit ab091ec5 authored by WangYuli's avatar WangYuli Committed by Keith Busch
Browse files

nvme/pci: Add APST quirk for Lenovo N60z laptop 

There is a hardware power-saving problem with the Lenovo N60z
board. When turn it on and leave it for 10 hours, there is a
20% chance that a nvme disk will not wake up until reboot.

Link: https://lore.kernel.org/all/2B5581C46AC6E335+9c7a81f1-05fb-4fd0-9fbb-108757c21628@uniontech.com


Signed-off-by: default avatarhmy <huanglin@uniontech.com>
Signed-off-by: default avatarWentao Guan <guanwentao@uniontech.com>
Signed-off-by: default avatarWangYuli <wangyuli@uniontech.com>
Signed-off-by: default avatarKeith Busch <kbusch@kernel.org>
parent 8e64d235

drivers/nvme/host/pci.c

+7 −0
Original line number Diff line number Diff line
@@ -2968,6 +2968,13 @@ static unsigned long check_vendor_combination_bug(struct pci_dev *pdev) 
			return NVME_QUIRK_FORCE_NO_SIMPLE_SUSPEND;

	}



	/*

	 * NVMe SSD drops off the PCIe bus after system idle

	 * for 10 hours on a Lenovo N60z board.

	 */

	if (dmi_match(DMI_BOARD_NAME, "LXKT-ZXEG-N6"))

		return NVME_QUIRK_NO_APST;



	return 0;

}