5.4-stable review patch. If anyone has any objections, please let me know.
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From: WangYuli wangyuli@uniontech.com
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-108757c... 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 --- drivers/nvme/host/pci.c | 7 +++++++ 1 file changed, 7 insertions(+)
--- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2822,6 +2822,13 @@ static unsigned long check_vendor_combin return NVME_QUIRK_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; }