linux-kernel - Re: [RFC PATCH] PCI: designware: add host

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Date:   Fri, 2 Dec 2016 11:51:26 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Joao Pinto <Joao.Pinto@...opsys.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org
Cc:     Kishon Vijay Abraham I <kishon@...com>,
        Jingoo Han <jingoohan1@...il.com>,
        Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Javier Martinez Canillas <javier@....samsung.com>,
        Richard Zhu <Richard.Zhu@...escale.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Murali Karicheri <m-karicheri2@...com>,
        Minghuan Lian <minghuan.Lian@...escale.com>,
        Mingkai Hu <mingkai.hu@...escale.com>,
        Roy Zang <tie-fei.zang@...escale.com>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        Jose Abreu <Jose.Abreu@...opsys.com>,
        Pratyush Anand <pratyush.anand@...il.com>,
        Stanimir Varbanov <svarbanov@...sol.com>,
        linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [RFC PATCH] PCI: designware: add host_init() error handling



On 02/12/16 10:32, Joao Pinto wrote:
>
> Hi Srinivas,
>
> Às 11:51 AM de 12/1/2016, Srinivas Kandagatla escreveu:
>>  drivers/pci/host/pci-dra7xx.c           |  4 +++-
>>  drivers/pci/host/pci-exynos.c           |  4 +++-
>>  drivers/pci/host/pci-imx6.c             |  4 +++-
>>  drivers/pci/host/pci-keystone.c         |  4 +++-
>>  drivers/pci/host/pci-layerscape.c       | 12 ++++++++----
>>  drivers/pci/host/pcie-armada8k.c        |  4 +++-
>>  drivers/pci/host/pcie-designware-plat.c |  4 +++-
>>  drivers/pci/host/pcie-designware.c      |  4 +++-
>>  drivers/pci/host/pcie-designware.h      |  2 +-
>>  drivers/pci/host/pcie-qcom.c            |  6 ++++--
>>  drivers/pci/host/pcie-spear13xx.c       |  4 +++-
>>  11 files changed, 37 insertions(+), 15 deletions(-)
>>
>
> Thanks for the patch!
>
> In my opinion your idea is good but only qcom driver is able to detect failure
> in the specific host init routine, all others have a 'return 0' even if
> something not well init. I would recomend that we take this issue a bit further
> and add the error checking to all specific pci drivers in order to make them as
> robust as qcom'.
I totally agree with you, I can give this a go in next version.

Thanks,
srini

>
> Thanks,
> Joao
>