linux-kernel - Re: [PATCH RESEND v5 00/24] dmaengine: dw-edma: Add RP/EP local DMA controllers support

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Date:   Thu, 25 Aug 2022 14:14:36 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Serge Semin <fancer.lancer@...il.com>
Cc:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Rob Herring <robh@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Jingoo Han <jingoohan1@...il.com>, Frank Li <Frank.Li@....com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Krzysztof Wilczyński <kw@...ux.com>,
        linux-pci@...r.kernel.org, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND v5 00/24] dmaengine: dw-edma: Add RP/EP local DMA
 controllers support

On 25-08-22, 08:04, Serge Semin wrote:
> On Thu, Aug 25, 2022 at 10:12:23AM +0530, Vinod Koul wrote:
> > On 24-08-22, 17:07, Serge Semin wrote:
> > > On Tue, Aug 23, 2022 at 09:15:26PM +0530, Manivannan Sadhasivam wrote:
> > > > On Mon, Aug 22, 2022 at 09:53:08PM +0300, Serge Semin wrote:
> > 
> > > > I've tested this series on Qualcomm SM8450 SoC based dev board. So,
> > > > 
> > > > Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> > > > 
> > > 
> > > Thanks.
> > > 
> > > > Not sure what is the merging strategy for this one but this series should get
> > > > merged into a single tree. Since the PCI patch is touching the designware
> > > > driver, merging the series into dmaengine tree might result in conflict later.
> > > 
> > > Right, the series
> > > [PATCH v5 00/20] PCI: dwc: Add generic resources and Baikal-T1 support
> > > is supposed to be merged in first. Then this one will get to be
> > > applied with no conflicts. That's what I imply in the head of the
> > > cover-letter.
> > 
> 
> > I dont see a dependency of dma patches with PCIe patches? I guess they
> > could go thru the respective trees now..?
> 
> There is a backward dependency: the PCIe patch in this series depends
> on the eDMA patches and the patches in the patchset #3. So should you

What is the dependency...? Looking at the patches there does not seem to
be one...

> merge the eDMA patches via your tree, the later patch in this series
> and the patchset #3 would have needed to be applied in there too. So
> the patches can't be split up between different branches. Seeing all
> the changes (including the DW eDMA part) concern the PCIe device (DW
> eDMA is a part of either DW PCIe End-point or Root Port) and we
> already agreed to merge all the changes via the PCIe tree, I would
> stick to the previous settled agreement.
> 
> -Sergey
> 
> > 
> > -- 
> > ~Vinod

-- 
~Vinod