Messages in this thread | | | Date | Tue, 30 Jul 2019 15:31:14 -0600 | From | Keith Busch <> | Subject | Re: [Regression] Commit "nvme/pci: Use host managed power state for suspend" has problems |
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On Tue, Jul 30, 2019 at 09:05:22PM +0000, Mario.Limonciello@dell.com wrote: > > -----Original Message----- > > From: Keith Busch <kbusch@kernel.org> > > Sent: Tuesday, July 30, 2019 2:20 PM > > To: Kai-Heng Feng > > Cc: Limonciello, Mario; rjw@rjwysocki.net; keith.busch@intel.com; hch@lst.de; > > sagi@grimberg.me; linux-nvme@lists.infradead.org; linux-pm@vger.kernel.org; > > linux-kernel@vger.kernel.org; rajatja@google.com > > Subject: Re: [Regression] Commit "nvme/pci: Use host managed power state for > > suspend" has problems > > > > > > [EXTERNAL EMAIL] > > > > On Wed, Jul 31, 2019 at 02:50:01AM +0800, Kai-Heng Feng wrote: > > > > > > Just did a quick test, this patch regress SK Hynix BC501, the SoC stays at > > > PC3 once the patch is applied. > > > > Okay, I'm afraid device/platform quirks may be required unless there are > > any other ideas out there. > > I think if a quirk goes in for Rafael's SSD it would have to be a quirk specific to this > device and FW version per the findings on KH checking the same device with the > older FW version.
That's fine, we have the infrastructure in place for fw specific quirks. See drivers/nvme/host/core.c:nvme_core_quirk_entry
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