linux-kernel - Re: 答复: [PATCH 1/2] PCI: dwc: kirin: add PCIe Driver for HiSilicon Kirin SoC

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Message-ID: <CAFGCpxyOBtar5jCEW=_aYH_XdhgxVFDMjE5ch2DU-OsSzKQsxA@mail.gmail.com>
Date:   Thu, 18 May 2017 14:23:11 +0800
From:   Guodong Xu <guodong.xu@...aro.org>
To:     songxiaowei <songxiaowei@...ilicon.com>
Cc:     Arnd Bergmann <arnd@...db.de>, Bjorn Helgaas <bhelgaas@...gle.com>,
        Kishon <kishon@...com>, Jingoo Han <jingoohan1@...il.com>,
        Tomasz Nowicki <tn@...ihalf.com>,
        Keith Busch <keith.busch@...el.com>,
        "niklas.cassel@...s.com" <niklas.cassel@...s.com>,
        Duc Dang <dhdang@....com>,
        "liudongdong (C)" <liudongdong3@...wei.com>,
        "Chenfeng (puck)" <puck.chen@...ilicon.com>,
        Wangbinghui <wangbinghui@...ilicon.com>,
        Suzhuangluan <suzhuangluan@...ilicon.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-pci <linux-pci@...r.kernel.org>
Subject: Re: 答复: [PATCH 1/2] PCI: dwc: kirin: add PCIe Driver for HiSilicon Kirin SoC

On Thu, May 18, 2017 at 9:50 AM, songxiaowei <songxiaowei@...ilicon.com> wrote:
> Hi Arnd,
>
>
> On Fri, May 12, 2017 at 3:51 AM, Song Xiaowei <songxiaowei@...ilicon.com> wrote:
>> From: songxiaowei <songxiaowei@...ilicon.com>
>
> Looks good overall, just a few details:
>
> Please fix your ~/.gitconfig to contain the same real name ("Song Xiaowei"
> instead of "songxiaowei") that you use for sending the emails.
>
> [Xiaowei Song]  I'll fix this issue and update the patch.
>
>> +
>> +static int kirin_pcie_phy_init(struct kirin_pcie *kirin_pcie) {
> ...
>> +       reg_val = kirin_apb_phy_readl(kirin_pcie, 0x400);
>> +       while (reg_val & pipe_clk_stable) {
>> +               udelay(100);
>> +               if (time == 0) {
>> +                       dev_err(kirin_pcie->pci->dev, "PIPE clk is not stable\n");
>> +                       return -EINVAL;
>> +               }
>> +               time--;
>> +               reg_val = kirin_apb_phy_readl(kirin_pcie, 0x400);
>> +       }
>
> If this is not called with interrupts disabled, please use a sleeping function (e.g. msleep(1)) as the delay and compare against ktime_before() to see how much total time has expired when waiting for a timeout, instead of using a counter.
>
> [Xiaowei Song] This issue was fixed in the patch sent at 2017-5-15, and I'll send it again.

Xiaowei,

Please make sure you add [PATCH v..] version information when you
making future updates. Eg.

$ git format-patch --subject-prefix="PATCH v3"

-Guodong


>
>> diff --git a/drivers/pci/dwc/pcie-kirin.h
>> b/drivers/pci/dwc/pcie-kirin.h new file mode 100644 index
>> 000000000000..ad9a3b427298
>> --- /dev/null
>> +++ b/drivers/pci/dwc/pcie-kirin.h
>> @@ -0,0 +1,79 @@
>> +/*
>> + * PCIe host controller driver for Kirin 960 SoCs
>> + *
>> + * Copyright (C) 2015 Huawei Electronics Co., Ltd.
>> + *             http://www.huawei.com
>> + *
>> + * Author: Xiaowei Song <songxiaowei@...wei.com>
>
> The header is only used in one .c file, so just remove it and add the contents to that file.
>
> [songxiaowei] In new patch the header file was deleted,
>
>
> Thanks a lot.
>
> Best regard,
> Xiaowei.