linux-kernel - Re: [PATCH V4 0/2] PCI/ASPM: Save/restore L1SS Capability for suspend/resume

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Date:   Tue, 13 Sep 2022 12:17:53 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Vidya Sagar <vidyas@...dia.com>
Cc:     bhelgaas@...gle.com, lorenzo.pieralisi@....com,
        refactormyself@...il.com, kw@...ux.com, rajatja@...gle.com,
        kenny@...ix.com, kai.heng.feng@...onical.com, abhsahu@...dia.com,
        sagupta@...dia.com, treding@...dia.com, jonathanh@...dia.com,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        kthota@...dia.com, mmaddireddy@...dia.com, sagar.tv@...il.com
Subject: Re: [PATCH V4 0/2] PCI/ASPM: Save/restore L1SS Capability for
 suspend/resume

On Tue, Sep 13, 2022 at 06:48:20PM +0530, Vidya Sagar wrote:
> This patch series saves and restores the ASPM L1SS capability registers
> during suspend/resume cycle of the system.
> First patch refactors the existing L1SS register programming code to
> take out the common code.
> Second patch adds support to save and restore of the L1SS registers using
> the common code extracted in the first patch to restore the registers.
> 
> This patch is verified on Tegra194 and Tegra234 platforms.
> 
> Vidya Sagar (2):
>   PCI/ASPM: Refactor ASPM L1SS control register programming
>   PCI/ASPM: Save/restore L1SS Capability for suspend/resume
> 
>  drivers/pci/pci.c       |   7 +++
>  drivers/pci/pci.h       |   4 ++
>  drivers/pci/pcie/aspm.c | 106 +++++++++++++++++++++++++++-------------
>  3 files changed, 83 insertions(+), 34 deletions(-)

Applied to pci/aspm for v6.1, thanks!

I dropped the pci_is_pcie() testing since pci_configure_ltr() only
sets dev->l1ss for PCIe devices.