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Date:   Tue, 11 Apr 2023 19:59:24 +0300
From:   Serge Semin <fancer.lancer@gmail.com>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
        Bjorn Helgaas <bhelgaas@google.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Vinod Koul <vkoul@kernel.org>
Cc:     Serge Semin <Sergey.Semin@baikalelectronics.ru>,
        Cai Huoqing <cai.huoqing@linux.dev>,
        Jingoo Han <jingoohan1@gmail.com>,
        Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
        Rob Herring <robh@kernel.org>,
        Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>,
        linux-pci@vger.kernel.org, dmaengine@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH RESEND v3 00/10] PCI: dwc: Relatively simple fixes and
 cleanups
Message-ID: <20230411165924.4zfwhwxacxxeg7rk@mobilestation>
References: <20230411033928.30397-1-Sergey.Semin@baikalelectronics.ru>
 <20230411110240.GB5333@thinkpad>
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On Tue, Apr 11, 2023 at 04:32:40PM +0530, Manivannan Sadhasivam wrote:
> On Tue, Apr 11, 2023 at 06:39:18AM +0300, Serge Semin wrote:
> > It turns out the recent DW PCIe-related patchset was merged in with
> > several relatively trivial issues left unsettled (noted by Bjorn and
> > Manivannan). All of these lefovers have been fixed in this patchset.
> > Namely the series starts with two bug-fixes. The first one concerns the
> > improper link-mode initialization in case if the CDM-check is enabled. The
> > second unfortunate mistake I made in the IP-core version type helper. In
> > particular instead of testing the IP-core version type the macro function
> > referred to the just IP-core version which obviously wasn't what I
> > intended.
> > 
> > Afterwards two @Mani-noted fixes follow. Firstly the dma-ranges related warning
> > message is fixed to start with "DMA-ranges" word instead of "Dma-ranges".
> > Secondly the Baikal-T1 PCIe Host driver is converted to perform the
> > asynchronous probe type which saved us of about 15% of bootup time if no any
> > PCIe peripheral device attached to the port.
> > 
> > Then the patchset contains the Baikal-T1 PCIe driver fix. The
> > corresponding patch removes the false error message printed during the
> > controller probe procedure. I accidentally added the unconditional
> > dev_err_probe() method invocation. It was obviously wrong.
> > 
> > Then two trivial cleanups are introduced. The first one concerns the
> > duplicated fast-link-mode flag unsetting. The second one implies
> > dropping a redundant empty line from the dw_pcie_link_set_max_speed()
> > function.
> > 
> > The series continues with a patch inspired by the last @Bjorn note
> > regarding the generic resources request interface. As @Bjorn correctly
> > said it would be nice to have the new interface used wider in the DW PCIe
> > subsystem. Aside with the Baikal-T1 PCIe Host driver the Toshiba Visconti
> > PCIe driver can be easily converted to using the generic clock names.
> > That's what is done in the noted patch.
> > 
> > The patchset is closed with a series of MAINTAINERS-list related patches.
> > Firstly after getting the DW PCIe RP/EP DT-schemas refactored I forgot to
> > update the MAINTAINER-list with the new files added in the framework of
> > that procedure. All the snps,dw-pcie* schemas shall be maintained by the
> > DW PCIe core driver maintainers. Secondly seeing how long it took for my
> > patchsets to review and not having any comments from the original driver
> > maintainers I'd suggest to add myself as the reviewer to the DW PCIe and
> > eDMA drivers. Thus hopefully the new updates review process will be
> > performed with much less latencies. For the same reason I would also like
> > to suggest to add @Manivannan as the DW PCIe/eDMA drivers maintainer if
> > he isn't against that idea. What do you think about the last suggestion?
> > 
> 
> I'm willing to co-maintain the drivers.

Awesome! @Bjorn, @Lorenzo, @Vinod what do you think about this? If you
are ok with that shall I resubmit the series with @Mani added to the
DW PCIe/eDMA maintainers list or will you create the respective
patches yourself?

-Serge(y)

> 
> - Mani
> 
> > Link: https://lore.kernel.org/linux-pci/20230217093956.27126-1-Sergey.Semin@baikalelectronics.ru/
> > Changelog v2:
> > - Rebase onto the kernel 6.3-rc2.
> > 
> > Link: https://lore.kernel.org/linux-pci/20230313200816.30105-1-Sergey.Semin@baikalelectronics.ru/
> > Changelog v3:
> > - Drop the patch:
> >   [PATCH v2 01/11] PCI: dwc: Fix port link CSR improper init if CDM check enabled
> >   and rebase onto the already submitted by @Yoshihiro fix:
> >   commit cdce67099117 ("PCI: dwc: Fix PORT_LINK_CONTROL update when CDM check enabled")
> > - Just resend.
> > 
> > Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
> > Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
> > Cc: Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>
> > Cc: linux-pci@vger.kernel.org
> > Cc: dmaengine@vger.kernel.org
> > Cc: linux-kernel@vger.kernel.org
> > 
> > Serge Semin (10):
> >   PCI: dwc: Fix erroneous version type test helper
> >   PCI: dwc: Fix inbound iATU entries out-of-bounds warning message
> >   PCI: bt1: Enable async probe type
> >   PCI: bt1: Fix printing false error message
> >   PCI: dwc: Drop duplicated fast-link-mode flag unsetting
> >   PCI: dwc: Drop empty line from dw_pcie_link_set_max_speed()
> >   PCI: visconti: Convert to using generic resources getter
> >   MAINTAINERS: Add all generic DW PCIe RP/EP DT-schemas
> >   MAINTAINERS: Add myself as the DW PCIe core reviewer
> >   MAINTAINERS: Add myself as the DW eDMA driver reviewer
> > 
> >  MAINTAINERS                                   |  5 ++-
> >  drivers/pci/controller/dwc/pcie-bt1.c         |  5 ++-
> >  .../pci/controller/dwc/pcie-designware-host.c |  2 +-
> >  drivers/pci/controller/dwc/pcie-designware.c  |  2 -
> >  drivers/pci/controller/dwc/pcie-designware.h  |  7 +++-
> >  drivers/pci/controller/dwc/pcie-visconti.c    | 37 +++++++++----------
> >  6 files changed, 30 insertions(+), 28 deletions(-)
> > 
> > -- 
> > 2.40.0
> > 
> > 
> 
> -- 
> மணிவண்ணன் சதாசிவம்