[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <87182CEADE011558+20240731075113.51089-1-xuerpeng@uniontech.com>
Date: Wed, 31 Jul 2024 15:50:46 +0800
From: Erpeng Xu <xuerpeng@...ontech.com>
To: stable@...r.kernel.org,
gregkh@...uxfoundation.org,
sashal@...nel.org,
shyjumon.n@...el.com
Cc: kbusch@...nel.org, axboe@...nel.dk, hch@....de, sagi@...mberg.me,
"linux-nvme@...ts.infradead.orglinux-kernel"@vger.kernel.org,
linux-kernel@...r.kernel.org, jonathan.derrick@...el.com,
wangyuli@...ontech.com, Erpeng Xu <xuerpeng@...ontech.com>
Subject: [PATCH 4.19] nvme/pci: Add sleep quirk for Samsung and Toshiba drives
From: Shyjumon N <shyjumon.n@...el.com>
commit 1fae37accfc5872af3905d4ba71dc6ab15829be7 upstream
The Samsung SSD SM981/PM981 and Toshiba SSD KBG40ZNT256G on the Lenovo
C640 platform experience runtime resume issues when the SSDs are kept in
sleep/suspend mode for long time.
This patch applies the 'Simple Suspend' quirk to these configurations.
With this patch, the issue had not been observed in a 1+ day test.
Reviewed-by: Jon Derrick <jonathan.derrick@...el.com>
Reviewed-by: Christoph Hellwig <hch@....de>
Signed-off-by: Shyjumon N <shyjumon.n@...el.com>
Signed-off-by: Keith Busch <kbusch@...nel.org>
Signed-off-by: Erpeng Xu <xuerpeng@...ontech.com>
---
drivers/nvme/host/pci.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 9c80f9f08149..b0434b687b17 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2747,6 +2747,18 @@ static unsigned long check_vendor_combination_bug(struct pci_dev *pdev)
(dmi_match(DMI_BOARD_NAME, "PRIME B350M-A") ||
dmi_match(DMI_BOARD_NAME, "PRIME Z370-A")))
return NVME_QUIRK_NO_APST;
+ } else if ((pdev->vendor == 0x144d && (pdev->device == 0xa801 ||
+ pdev->device == 0xa808 || pdev->device == 0xa809)) ||
+ (pdev->vendor == 0x1e0f && pdev->device == 0x0001)) {
+ /*
+ * Forcing to use host managed nvme power settings for
+ * lowest idle power with quick resume latency on
+ * Samsung and Toshiba SSDs based on suspend behavior
+ * on Coffee Lake board for LENOVO C640
+ */
+ if ((dmi_match(DMI_BOARD_VENDOR, "LENOVO")) &&
+ dmi_match(DMI_BOARD_NAME, "LNVNB161216"))
+ return NVME_QUIRK_SIMPLE_SUSPEND;
}
return 0;
--
2.45.2
Powered by blists - more mailing lists