linux-kernel - Re: [PATCH v2] nvme: Add quirk for LiteON CL1 devices running FW 22301111

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Date:   Wed, 14 Aug 2019 14:08:47 -0600
From:   Keith Busch <kbusch@...nel.org>
To:     Mario Limonciello <mario.limonciello@...l.com>
Cc:     Jens Axboe <axboe@...com>, Christoph Hellwig <hch@....de>,
        Sagi Grimberg <sagi@...mberg.me>,
        "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Ryan Hong <Ryan.Hong@...l.com>, Crag Wang <Crag.Wang@...l.com>,
        "sjg@...gle.com" <sjg@...gle.com>,
        Charles Hyde <charles.hyde@...lteam.com>,
        Jared Dominguez <jared.dominguez@...l.com>
Subject: Re: [PATCH v2] nvme: Add quirk for LiteON CL1 devices running FW
 22301111

On Wed, Aug 14, 2019 at 01:08:24PM -0700, Mario Limonciello wrote:
> One of the components in LiteON CL1 device has limitations that
> can be encountered based upon boundary race conditions using the
> nvme bus specific suspend to idle flow.
> 
> When this situation occurs the drive doesn't resume properly from
> suspend-to-idle.
> 
> LiteON has confirmed this problem and fixed in the next firmware
> version.  As this firmware is already in the field, avoid running
> nvme specific suspend to idle flow.
> 
> Fixes: d916b1be94b6 ("nvme-pci: use host managed power state for suspend")
> Link: http://lists.infradead.org/pipermail/linux-nvme/2019-July/thread.html
> Signed-off-by: Mario Limonciello <mario.limonciello@...l.com>
> Signed-off-by: Charles Hyde <charles.hyde@...lteam.com>

Looks fine to me.

Reviewed-by: Keith Busch <kbusch@...nel.org>