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From: iBug <i@ibugone.com>
To: kbusch@kernel.org,
	axboe@kernel.dk,
	hch@lst.de,
	sagi@grimberg.me,
	linux-nvme@lists.infradead.org
Cc: linux-kernel@vger.kernel.org,
	"Jiawei Fu (iBug)" <i@ibugone.com>
Subject: [PATCH] drivers/nvme: Add quirks for device 126f:2262
Date: Sat, 16 Mar 2024 03:27:49 +0800
Message-ID: <20240315192747.1749119-3-i@ibugone.com>
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From: "Jiawei Fu (iBug)" <i@ibugone.com>

This commit adds NVME_QUIRK_NO_DEEPEST_PS and NVME_QUIRK_BOGUS_NID for
device [126f:2262], which appears to be a generic VID:PID pair used for
many SSDs based on the Silicon Motion SM2262/SM2262EN controller.

Two of my SSDs with this VID:PID pair exhibit the same behavior:

  * They frequently have trouble exiting the deepest power state (5),
    resulting in the entire disk unresponsive.
    Verified by setting nvme_core.default_ps_max_latency_us=10000 and
    observing them behaving normally.
  * They produce all-zero nguid and eui64 with `nvme id-ns` command.

The offending products are:

  * HP SSD EX950 1TB
  * HIKVISION C2000Pro 2TB

Signed-off-by: Jiawei Fu <i@ibugone.com>
---
 drivers/nvme/host/pci.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index e6267a6aa380..8e0bb9692685 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3363,6 +3363,9 @@ static const struct pci_device_id nvme_id_table[] = {
 				NVME_QUIRK_BOGUS_NID, },
 	{ PCI_VDEVICE(REDHAT, 0x0010),	/* Qemu emulated controller */
 		.driver_data = NVME_QUIRK_BOGUS_NID, },
+	{ PCI_DEVICE(0x126f, 0x2262),	/* Silicon Motion generic */
+		.driver_data = NVME_QUIRK_NO_DEEPEST_PS |
+				NVME_QUIRK_BOGUS_NID, },
 	{ PCI_DEVICE(0x126f, 0x2263),	/* Silicon Motion unidentified */
 		.driver_data = NVME_QUIRK_NO_NS_DESC_LIST |
 				NVME_QUIRK_BOGUS_NID, },
-- 
2.43.2