linux-kernel - [PATCH] Revert "nvme-pci: add quirks for Samsung X5 SSDs"

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Date:   Thu,  9 Jun 2022 10:40:51 +0200
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     "open list:NVM EXPRESS DRIVER" <linux-nvme@...ts.infradead.org>,
        Sagi Grimberg <sagi@...mberg.me>, alan.adamson@...cle.com,
        LKML <linux-kernel@...r.kernel.org>,
        Yi Zhang <yi.zhang@...hat.com>,
        Keith Busch <kbusch@...nel.org>, axboe@...com,
        Christoph Hellwig <hch@....de>, abhijeet.rao@...el.com,
        monish.kumar.r@...el.com
Cc:     "Jason A. Donenfeld" <Jason@...c4.com>, stable@...r.kernel.org
Subject: [PATCH] Revert "nvme-pci: add quirks for Samsung X5 SSDs"

This reverts commit bc360b0b1611566e1bd47384daf49af6a1c51837.

This matches the hardware identifier of the Samsung 970 EVO Plus, a very
popular internal laptop NVMe drive, which is not the Samsung X5, an
external thunderbolt drive. In particular, this causes:

1) a 2.3 second boot time delay; and
2) disabling of deep power saving states.

So just revert this until whatever funny business can be worked out
regarding Samsung's PCI IDs.

Fixes: bc360b0b1611 ("nvme-pci: add quirks for Samsung X5 SSDs")
Cc: stable@...r.kernel.org
Cc: Monish Kumar R <monish.kumar.r@...el.com>
Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
---
 drivers/nvme/host/pci.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 48f4f6eb877b..47b9e3e0ea5a 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3483,10 +3483,7 @@ 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