ACK: [SRU] [Yakkety] [Zesty] [PATCH 0/2] New Quirk for NVMe APST

Seth Forshee seth.forshee at
Fri Apr 28 12:18:41 UTC 2017

On Thu, Apr 27, 2017 at 12:53:28PM +0800, Kai-Heng Feng wrote:
> BugLink:
> Impact:
> Several users reported that their NVMe stopped to work correctly after
> NVMe APST is enabled.
> Affected users confirmed disable deepest state (ps 4) can workaround the issue
> on Dell Precision 5510 / XPS 9550 with Samsung NVMe.
> There's also a Thoshiba NVMe requires disabling all power state.
> Fix:
> A new quirk to disable deepest power state on above mentioned Dell & Samsung
> combination.
> Also, disable the malfunction Toshiba NVMe.
> This fix is in Jens Axboe's block tree, hasn't landed in Linus' tree yet.
> Test:
> A user reported back this new quirk works on his system.
> Andy Lutomirski (2):
>   nvme: Adjust the Samsung APST quirk
>   nvme: Quirk APST off on "THNSF5256GPUK TOSHIBA"

Acked-by: Seth Forshee <seth.forshee at>

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