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Tao Jiangkeithbusch
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nvme-pci: add quirk for Memblaze Pblaze5 (0x1c5f:0x0555)
The Memblaze Pblaze5 NVMe device (PCI ID 0x1c5f:0x0555) is detected as a controller on recent kernels (tested on 5.15.85 and 6.8.4), but no namespace is exposed. Tools like lsblk and fdisk do not report any block device. dmesg shows: nvme nvme0: missing or invalid SUBNQN field. The device works correctly on older kernels (e.g. 4.19), suggesting a compatibility issue with newer namespace handling. This indicates the device does not properly support the Namespace Descriptor List feature. Applying NVME_QUIRK_NO_NS_DESC_LIST allows the namespace to be discovered correctly. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Signed-off-by: Tao Jiang <tanroame.kyle@gmail.com> Signed-off-by: Keith Busch <kbusch@kernel.org>
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drivers/nvme/host/pci.c

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@@ -4102,6 +4102,8 @@ static const struct pci_device_id nvme_id_table[] = {
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.driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, },
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{ PCI_DEVICE(0x1c5f, 0x0540), /* Memblaze Pblaze4 adapter */
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.driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, },
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{ PCI_DEVICE(0x1c5f, 0x0555), /* Memblaze Pblaze5 adapter */
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.driver_data = NVME_QUIRK_NO_NS_DESC_LIST, },
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{ PCI_DEVICE(0x144d, 0xa808), /* Samsung PM981/983 */
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.driver_data = NVME_QUIRK_IGNORE_DEV_SUBNQN, },
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{ PCI_DEVICE(0x144d, 0xa821), /* Samsung PM1725 */

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