linux-kernel - [PATCH AUTOSEL 5.10 08/25] nvme-pci: add quirks for Samsung X5 SSDs

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Date:   Wed,  6 Apr 2022 21:13:56 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Monish Kumar R <monish.kumar.r@...el.com>,
        Christoph Hellwig <hch@....de>,
        Sasha Levin <sashal@...nel.org>, kbusch@...nel.org,
        axboe@...com, sagi@...mberg.me, linux-nvme@...ts.infradead.org
Subject: [PATCH AUTOSEL 5.10 08/25] nvme-pci: add quirks for Samsung X5 SSDs

From: Monish Kumar R <monish.kumar.r@...el.com>

[ Upstream commit bc360b0b1611566e1bd47384daf49af6a1c51837 ]

Add quirks to not fail the initialization and to have quick resume
latency after cold/warm reboot.

Signed-off-by: Monish Kumar R <monish.kumar.r@...el.com>
Signed-off-by: Christoph Hellwig <hch@....de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/nvme/host/pci.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 97afeb898b25..ba067c1a6cf6 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3262,7 +3262,10 @@ static const struct pci_device_id nvme_id_table[] = {
 				NVME_QUIRK_128_BYTES_SQES |
 				NVME_QUIRK_SHARED_TAGS |
 				NVME_QUIRK_SKIP_CID_GEN },
-
+	{ PCI_DEVICE(0x144d, 0xa808),   /* Samsung X5 */
+		.driver_data =  NVME_QUIRK_DELAY_BEFORE_CHK_RDY|
+				NVME_QUIRK_NO_DEEPEST_PS |
+				NVME_QUIRK_IGNORE_DEV_SUBNQN, },
 	{ PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_EXPRESS, 0xffffff) },
 	{ 0, }
 };
-- 
2.35.1