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

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Date:   Fri, 2 Dec 2016 10:32:43 +0000
From:   Joao Pinto <Joao.Pinto@...opsys.com>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        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


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'.

Thanks,
Joao