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Message-ID: <20240731235629.3929769-2-sashal@kernel.org>
Date: Wed, 31 Jul 2024 19:56:28 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Cc: WangYuli <wangyuli@...ontech.com>,
hmy <huanglin@...ontech.com>,
Wentao Guan <guanwentao@...ontech.com>,
Keith Busch <kbusch@...nel.org>,
Sasha Levin <sashal@...nel.org>,
sagi@...mberg.me,
linux-nvme@...ts.infradead.org
Subject: [PATCH AUTOSEL 4.19 2/2] nvme/pci: Add APST quirk for Lenovo N60z laptop
From: WangYuli <wangyuli@...ontech.com>
[ Upstream commit ab091ec536cb7b271983c0c063b17f62f3591583 ]
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@...ontech.com>
Signed-off-by: Wentao Guan <guanwentao@...ontech.com>
Signed-off-by: WangYuli <wangyuli@...ontech.com>
Signed-off-by: Keith Busch <kbusch@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/nvme/host/pci.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 163497ef48fd7..a243c066d9234 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -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;
}
--
2.43.0
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