Re: [PATCH] nvme-core: add apst_override param to force APST if controller does not report APSTA=1

2017-05-03 Thread Keith Busch
On Wed, May 03, 2017 at 07:02:07PM -0700, Alexander Kappner wrote: > Some buggy NVMe controllers support APST (autonomous power > state transitions), but do not report APSTA=1. On these controllers, the NVMe > driver does not enable APST support. I have verified this problem occurring > on >

Re: [PATCH] nvme-core: add apst_override param to force APST if controller does not report APSTA=1

2017-05-03 Thread Keith Busch
On Wed, May 03, 2017 at 07:02:07PM -0700, Alexander Kappner wrote: > Some buggy NVMe controllers support APST (autonomous power > state transitions), but do not report APSTA=1. On these controllers, the NVMe > driver does not enable APST support. I have verified this problem occurring > on >

[PATCH] nvme-core: add apst_override param to force APST if controller does not report APSTA=1

2017-05-03 Thread Alexander Kappner
Some buggy NVMe controllers support APST (autonomous power state transitions), but do not report APSTA=1. On these controllers, the NVMe driver does not enable APST support. I have verified this problem occurring on - Samsung 960 Pro 2TB (Firmware 2B6QCXP7, current as of 5/4/17) -

[PATCH] nvme-core: add apst_override param to force APST if controller does not report APSTA=1

2017-05-03 Thread Alexander Kappner
Some buggy NVMe controllers support APST (autonomous power state transitions), but do not report APSTA=1. On these controllers, the NVMe driver does not enable APST support. I have verified this problem occurring on - Samsung 960 Pro 2TB (Firmware 2B6QCXP7, current as of 5/4/17) -