linux-kernel - [PATCH] nvme-pci: Add TUXEDO IBS Gen8 to Samsung sleep quirk

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Message-ID: <20250701205630.64031-1-wse@tuxedocomputers.com>
Date: Tue,  1 Jul 2025 22:55:49 +0200
From: Werner Sembach <wse@...edocomputers.com>
To: Keith Busch <kbusch@...nel.org>,
	Jens Axboe <axboe@...nel.dk>,
	Christoph Hellwig <hch@....de>,
	Sagi Grimberg <sagi@...mberg.me>
Cc: Georg Gottleuber <ggo@...edocomputers.com>,
	Werner Sembach <wse@...edocomputers.com>,
	linux-nvme@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] nvme-pci: Add TUXEDO IBS Gen8 to Samsung sleep quirk

From: Georg Gottleuber <ggo@...edocomputers.com>

On the TUXEDO InfinityBook S Gen8, a Samsung 990 Evo NVMe leads to
a high power consumption in s2idle sleep (3.5 watts).

This patch applies 'Force No Simple Suspend' quirk to achieve a sleep with
a lower power consumption, typically around 1 watts.

Signed-off-by: Georg Gottleuber <ggo@...edocomputers.com>
Signed-off-by: Werner Sembach <wse@...edocomputers.com>
Cc: stable@...r.kernel.org
---
 drivers/nvme/host/pci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 8ff12e415cb5d..d677080e67d33 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3198,10 +3198,12 @@ static unsigned long check_vendor_combination_bug(struct pci_dev *pdev)
 		 * Exclude Samsung 990 Evo from NVME_QUIRK_SIMPLE_SUSPEND
 		 * because of high power consumption (> 2 Watt) in s2idle
 		 * sleep. Only some boards with Intel CPU are affected.
+		 * (Note for testing: Samsung 990 Evo Plus has same PCI ID)
 		 */
 		if (dmi_match(DMI_BOARD_NAME, "DN50Z-140HC-YD") ||
 		    dmi_match(DMI_BOARD_NAME, "GMxPXxx") ||
 		    dmi_match(DMI_BOARD_NAME, "GXxMRXx") ||
+		    dmi_match(DMI_BOARD_NAME, "NS5X_NS7XAU") ||
 		    dmi_match(DMI_BOARD_NAME, "PH4PG31") ||
 		    dmi_match(DMI_BOARD_NAME, "PH4PRX1_PH6PRX1") ||
 		    dmi_match(DMI_BOARD_NAME, "PH6PG01_PH6PG71"))
-- 
2.43.0