From: Sinan Kaya <okaya@codeaurora.org>
To: Bjorn Helgaas <helgaas@kernel.org>
Cc: linux-pci@vger.kernel.org, timur@codeaurora.org,
linux-arm-msm@vger.kernel.org,
Mayurkumar Patel <mayurkumar.patel@intel.com>,
open list <linux-kernel@vger.kernel.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH V3] PCI/ASPM: reconfigure ASPM following hotplug for POLICY_DEFAULT
Date: Fri, 10 Mar 2017 09:36:09 -0500 [thread overview]
Message-ID: <ec7ee607-60f3-7e1a-b1cd-8e4534ab98eb@codeaurora.org> (raw)
In-Reply-To: <20170309222751.GD19517@bhelgaas-glaptop.roam.corp.google.com>
Hi Bjorn,
On 3/9/2017 5:27 PM, Bjorn Helgaas wrote:
> How hard do you think it would be to rework this path slightly so we:
>
> - call pcie_aspm_init_link_state() for every device, maybe from
> pci_init_capabilities()
>
> - for bridges, have pcie_aspm_init_link_state() allocate a
> link_state, regardless of whether it currently has any children,
> and save the ASPM settings done by firmware
>
> - for endpoints, have pcie_aspm_init_link_state() do the actual ASPM
> setup of the link as it currently does
>
> - for endpoints, change pcie_aspm_exit_link_state() so it cleans up
> the device's own state and disables ASPM if necessary, but doesn't
> remove the parent's link_state
>
> - for bridges, change pcie_aspm_exit_link_state() so it frees the
> bridge's own link_state
Thanks for the feedback, Let me take a stab at this.
Sinan
--
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.
next prev parent reply other threads:[~2017-03-10 14:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-08 20:39 [PATCH V3] PCI/ASPM: reconfigure ASPM following hotplug for POLICY_DEFAULT Sinan Kaya
2017-03-09 22:27 ` Bjorn Helgaas
2017-03-10 14:36 ` Sinan Kaya [this message]
2017-03-13 8:49 ` Patel, Mayurkumar
2017-03-13 21:06 ` Sinan Kaya
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