linux-kernel - Re: [PATCH 2/2] NTB: PCI Quirk to Enable Switchtec NT Functionality with IOMMU On

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Date:   Tue, 22 May 2018 14:08:27 -0700
From:   Doug Meyer <dmeyer@...aio.com>
To:     Logan Gunthorpe <logang@...tatee.com>
Cc:     kurt.schwemmer@...rosemi.com, linux-pci@...r.kernel.org,
        linux-ntb <linux-ntb@...glegroups.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Jon Mason <jdmason@...zu.us>,
        "Jiang, Dave" <dave.jiang@...el.com>,
        Allen Hubbe <allenbh@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] NTB: PCI Quirk to Enable Switchtec NT Functionality
 with IOMMU On

[resending because I forgot the mailing lists want plain text mode]


Dear Logan,

I agree. I'll add pci_disable_device().

Blessings,
Doug



On Thu, May 17, 2018 at 8:48 AM, Logan Gunthorpe <logang@...tatee.com> wrote:
>
> Thanks for your hard work on this Doug!
>
> On 17/05/18 06:00 AM, dmeyer@...aio.com wrote:
>
> > +     if (pci_enable_device(pdev)) {
> > +             dev_err(&pdev->dev, "Cannot enable Switchtec device\n");
> > +             return;
> > +     }
>
> I suspect we should probably cass pci_disable_device() before leaving
> this function so it's in the same state we started. Just like we unmap
> the mmio.
>
> Logan
>
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