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>

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 7168ff4cc62bba4d660d2110981f978239dbac00..a823330567ff8b9cc4cde367c2ff04570c900227 100644 (file)
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2933,6 +2933,13 @@ 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;
 }