linux-kernel - [PATCH] nvme-pci: Add quirk changes for Samsung X5 SSDs

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Date:   Wed, 16 Mar 2022 13:24:49 +0530
From:   monish.kumar.r@...el.com
To:     kbusch@...nel.org, axboe@...com, hch@....de, sagi@...mberg.me,
        linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     abhijeet.rao@...el.com, monish.kumar.r@...el.com
Subject: [PATCH] nvme-pci: Add quirk changes for Samsung X5 SSDs

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

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>
---
 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 6a99ed680915..c1150e01394c 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3463,7 +3463,10 @@ 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, }
 };
-- 
2.17.1