Commit 9cc0878c authored Jul 15, 2024 by WangYuli Committed by Greg Kroah-Hartman Aug 19, 2024

nvme/pci: Add APST quirk for Lenovo N60z laptop

commit ab091ec536cb7b271983c0c063b17f62f3591583 upstream.

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: hmy <huanglin@uniontech.com>
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>
Signed-off-by: WangYuli <wangyuli@uniontech.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent d5c3c7e2

drivers/nvme/host/pci.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -2481,6 +2481,13 @@ static unsigned long check_vendor_combination_bug(struct pci_dev *pdev)
		return NVME_QUIRK_NO_APST;
		}

		/*
		* 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;
		}