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

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Date:   Thu, 17 May 2018 09:48:04 -0600
From:   Logan Gunthorpe <logang@...tatee.com>
To:     dmeyer@...aio.com, kurt.schwemmer@...rosemi.com,
        linux-pci@...r.kernel.org, linux-ntb@...glegroups.com
Cc:     bhelgaas@...gle.com, jdmason@...zu.us, dave.jiang@...el.com,
        allenbh@...il.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] NTB: PCI Quirk to Enable Switchtec NT Functionality
 with IOMMU On

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