[PATCH] nvme: Add quirks for Lexar 256GB SSD

[PATCH] nvme: Add quirks for Lexar 256GB SSD

[Pascal Terjan]

Add NVME_QUIRK_NO_NS_DESC_LIST to Lexar 256GB SSD to allow it to
work again, and add NVME_QUIRK_IGNORE_DEV_SUBNQN to avoid a warning.

[    0.637476] nvme nvme0: missing or invalid SUBNQN field.
[    0.638399] nvme nvme0: Identify Descriptors failed (16386)

Reported and tested in https://bugs.mageia.org/show_bug.cgi?id=28417

Signed-off-by: Pascal Terjan <pterjan@google.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 7b6632c00ffd..9a56ec70e93a 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3232,6 +3232,9 @@ static const struct pci_device_id nvme_id_table[] = {
 				NVME_QUIRK_DISABLE_WRITE_ZEROES, },
 	{ PCI_DEVICE(0x126f, 0x2263),	/* Silicon Motion unidentified */
 		.driver_data = NVME_QUIRK_NO_NS_DESC_LIST, },
+	{ PCI_DEVICE(0x1b4b, 0x1092),	/* Lexar 256 GB SSD */
+		.driver_data = NVME_QUIRK_NO_NS_DESC_LIST |
+				NVME_QUIRK_IGNORE_DEV_SUBNQN, },
 	{ PCI_DEVICE(0x1bb1, 0x0100),   /* Seagate Nytro Flash Storage */
 		.driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, },
 	{ PCI_DEVICE(0x1c58, 0x0003),	/* HGST adapter */
-- 
2.30.0.617.g56c4b15f3c-goog


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Re: [PATCH] nvme: Add quirks for Lexar 256GB SSD

[Chaitanya Kulkarni]

Pascal,

On 2/23/21 14:15, Pascal Terjan wrote:
> Add NVME_QUIRK_NO_NS_DESC_LIST to Lexar 256GB SSD to allow it to
> work again, and add NVME_QUIRK_IGNORE_DEV_SUBNQN to avoid a warning.
>
> [    0.637476] nvme nvme0: missing or invalid SUBNQN field.
> [    0.638399] nvme nvme0: Identify Descriptors failed (16386)
>
> Reported and tested in https://bugs.mageia.org/show_bug.cgi?id=28417
>
> Signed-off-by: Pascal Terjan <pterjan@google.com>

Do we need to add the Tested-by: tag ? if this is tested by other than the
patch author ?

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Re: [PATCH] nvme: Add quirks for Lexar 256GB SSD

[Christoph Hellwig]

On Tue, Feb 23, 2021 at 10:10:46PM +0000, Pascal Terjan wrote:
> Add NVME_QUIRK_NO_NS_DESC_LIST to Lexar 256GB SSD to allow it to
> work again, and add NVME_QUIRK_IGNORE_DEV_SUBNQN to avoid a warning.

Why again?  The drive has always been broken since the desc list has
been a mandatory feature since NVMe 1.3..

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Re: [PATCH] nvme: Add quirks for Lexar 256GB SSD

[Pascal Terjan]

On Wed, 24 Feb 2021 at 09:21, Christoph Hellwig <hch@infradead.org> wrote:
>
> On Tue, Feb 23, 2021 at 10:10:46PM +0000, Pascal Terjan wrote:
> > Add NVME_QUIRK_NO_NS_DESC_LIST to Lexar 256GB SSD to allow it to
> > work again, and add NVME_QUIRK_IGNORE_DEV_SUBNQN to avoid a warning.
>
> Why again?  The drive has always been broken since the desc list has
> been a mandatory feature since NVMe 1.3..

According to the reporter it works on Debian which is still running a
4.19 kernel
My guess is that it worked before
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=538af88ea7d9de241e6b6f006e9049c4d96723bb
as the error was ignored
And I believe it would have worked again until
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5bedd3afee8eb01ccd256f0cd2cc0fa6f841417a
as a waorkaround was added at some point (it changed at
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fb314eb0cbb2e11540d1ae1a7b28346397f621ef
but was laready there)

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Re: [PATCH] nvme: Add quirks for Lexar 256GB SSD

[Keith Busch]

On Wed, Feb 24, 2021 at 10:23:23AM +0000, Pascal Terjan wrote:
> On Wed, 24 Feb 2021 at 09:21, Christoph Hellwig <hch@infradead.org> wrote:
> >
> > On Tue, Feb 23, 2021 at 10:10:46PM +0000, Pascal Terjan wrote:
> > > Add NVME_QUIRK_NO_NS_DESC_LIST to Lexar 256GB SSD to allow it to
> > > work again, and add NVME_QUIRK_IGNORE_DEV_SUBNQN to avoid a warning.
> >
> > Why again?  The drive has always been broken since the desc list has
> > been a mandatory feature since NVMe 1.3..
> 
> According to the reporter it works on Debian which is still running a
> 4.19 kernel
> My guess is that it worked before
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=538af88ea7d9de241e6b6f006e9049c4d96723bb
> as the error was ignored
> And I believe it would have worked again until
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5bedd3afee8eb01ccd256f0cd2cc0fa6f841417a
> as a waorkaround was added at some point (it changed at
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fb314eb0cbb2e11540d1ae1a7b28346397f621ef
> but was laready there)

Right, the error used to be ignored, but now we avoid the error in the
first place with the quirk.

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