linux-kernel - Re: [PATCH v3 03/18] driver core: platform: Rename platform_dma

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Date:   Tue, 7 Dec 2021 09:21:31 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     Jason Gunthorpe <jgg@...dia.com>,
        Christoph Hellwig <hch@...radead.org>
Cc:     baolu.lu@...ux.intel.com, Stuart Yoder <stuyoder@...il.com>,
        rafael@...nel.org, David Airlie <airlied@...ux.ie>,
        linux-pci@...r.kernel.org,
        Thierry Reding <thierry.reding@...il.com>,
        Diana Craciun <diana.craciun@....nxp.com>,
        Dmitry Osipenko <digetx@...il.com>,
        Will Deacon <will@...nel.org>, Ashok Raj <ashok.raj@...el.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Chaitanya Kulkarni <kch@...dia.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        kvm@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Cornelia Huck <cohuck@...hat.com>,
        linux-kernel@...r.kernel.org, Li Yang <leoyang.li@....com>,
        iommu@...ts.linux-foundation.org,
        Jacob jun Pan <jacob.jun.pan@...el.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Robin Murphy <robin.murphy@....com>
Subject: Re: [PATCH v3 03/18] driver core: platform: Rename
 platform_dma_configure()

On 12/6/21 11:04 PM, Jason Gunthorpe wrote:
> On Mon, Dec 06, 2021 at 06:47:45AM -0800, Christoph Hellwig wrote:
>> On Mon, Dec 06, 2021 at 10:45:35AM -0400, Jason Gunthorpe via iommu wrote:
>>> IIRC the only thing this function does is touch ACPI and OF stuff?
>>> Isn't that firmware?
>>>
>>> AFAICT amba uses this because AMBA devices might be linked to DT
>>> descriptions?
>> But DT descriptions aren't firmware.  They are usually either passed onb
>> the bootloader or in some deeply embedded setups embedded into the
>> kernel image.
> Pedenatically yes, but do you know of a common word to refer to both
> OF and ACPI that is better than firmware?:)

If the firmware_ name is confusing, how about common_dma_configure()?
Or, copy the 6 lines of code to amba bus driver?

Best regards,
baolu