linux-kernel - Re: [PATCH v5 4/4] PCI/DPC: Enumerate the devices after DPC trigger event

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Message-ID: <20180119014310.GA12043@localhost.localdomain>
Date:   Thu, 18 Jan 2018 18:43:10 -0700
From:   Keith Busch <keith.busch@...el.com>
To:     Sinan Kaya <okaya@...eaurora.org>
Cc:     poza@...eaurora.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        Dongdong Liu <liudongdong3@...wei.com>,
        Wei Zhang <wzhang@...com>, Timur Tabi <timur@...eaurora.org>
Subject: Re: [PATCH v5 4/4] PCI/DPC: Enumerate the devices after DPC trigger
 event

On Thu, Jan 18, 2018 at 11:35:59AM -0500, Sinan Kaya wrote:
> On 1/18/2018 12:32 AM, poza@...eaurora.org wrote:
> > On 2018-01-18 08:26, Keith Busch wrote:
> >> On Wed, Jan 17, 2018 at 08:27:39AM -0800, Sinan Kaya wrote:
> >>> On 1/17/2018 5:37 AM, Oza Pawandeep wrote:
> >>> > +static bool dpc_wait_link_active(struct pci_dev *pdev)
> >>> > +{
> >>>
> >>> I think you can also make this function common instead of making another copy here.
> >>> Of course, this would be another patch.
> >>
> >> It is actually very similar to __pcie_wait_link_active in pciehp_hpc.c,
> >> so there's some opprotunity to make even more common code.
> > 
> > in that case there has to be a generic function in
> > drives/pci.c
> > 
> > which addresses folowing functions from
> > 
> > pcie-dpc.c:
> > dpc_wait_link_inactive
> > dpc_wait_link_active
> > 
> > drivers/pci/hotplug/pciehp_hpc.c
> > pcie_wait_link_active
> > 
> > 
> > all aboe making one generic function to be moved to drives/pci.c
> > 
> > please let me know if this is okay.
> 
> Works for me. Keith/Bjorn?

Yep, I believe common solutions that reduce code is always encouraged
in the Linux kernel.