From: WangYuli <wangyuli@xxxxxxxxxxxxx> 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@xxxxxxxxxxxxx Signed-off-by: hmy <huanglin@xxxxxxxxxxxxx> Signed-off-by: Wentao Guan <guanwentao@xxxxxxxxxxxxx> Signed-off-by: WangYuli <wangyuli@xxxxxxxxxxxxx> Signed-off-by: Keith Busch <kbusch@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/nvme/host/pci.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2481,6 +2481,13 @@ static unsigned long check_vendor_combin 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; } Patches currently in stable-queue which might be from wangyuli@xxxxxxxxxxxxx are queue-4.19/nvme-pci-add-apst-quirk-for-lenovo-n60z-laptop.patch
