Re: [PATCH v2 01/22] PCI/MSI: Clean up struct msi_chip argument
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- To: Thierry Reding <thierry.reding@xxxxxxxxx>
- Subject: Re: [PATCH v2 01/22] PCI/MSI: Clean up struct msi_chip argument
- From: Yijing Wang <wangyijing@xxxxxxxxxx>
- Date: Fri, 26 Sep 2014 09:58:54 +0800
- Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>, <linux-pci@xxxxxxxxxxxxxxx>, <linux-kernel@xxxxxxxxxxxxxxx>, Xinwei Hu <huxinwei@xxxxxxxxxx>, Wuyun <wuyun.wu@xxxxxxxxxx>, <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>, Russell King <linux@xxxxxxxxxxxxxxxx>, <linux-arch@xxxxxxxxxxxxxxx>, <arnab.basu@xxxxxxxxxxxxx>, <Bharat.Bhushan@xxxxxxxxxxxxx>, <x86@xxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, <iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx>, <linux-mips@xxxxxxxxxxxxxx>, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>, <linuxppc-dev@xxxxxxxxxxxxxxxx>, <linux-s390@xxxxxxxxxxxxxxx>, Sebastian Ott <sebott@xxxxxxxxxxxxxxxxxx>, "Tony Luck" <tony.luck@xxxxxxxxx>, <linux-ia64@xxxxxxxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, <sparclinux@xxxxxxxxxxxxxxx>, Chris Metcalf <cmetcalf@xxxxxxxxxx>, Ralf Baechle <ralf@xxxxxxxxxxxxxx>, Lucas Stach <l.stach@xxxxxxxxxxxxxx>, David Vrabel <david.vrabel@xxxxxxxxxx>, "Sergei Shtylyov" <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>
- In-reply-to: <20140925071536.GG12423@ulmo>
- List-id: <linux-ia64.vger.kernel.org>
- References: <1411614872-4009-1-git-send-email-wangyijing@huawei.com> <1411614872-4009-2-git-send-email-wangyijing@huawei.com> <20140925071536.GG12423@ulmo>
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On 2014/9/25 15:15, Thierry Reding wrote:
> On Thu, Sep 25, 2014 at 11:14:11AM +0800, Yijing Wang wrote:
>> Msi_chip functions setup_irq/teardown_irq rarely use msi_chip
>> argument.
>
> That's not true. Out of the four drivers that you modify two use the
> parameter. And the two that don't probably should be using it too.
>
> 50% is not "rarely". =)
>
>> We can look up msi_chip pointer by the device pointer
>> or irq number, so clean up msi_chip argument.
>
> I don't like this particular change. The idea was to keep the API object
> oriented so that drivers wouldn't have to know where to get the MSI chip
> from. It also makes it more resilient against code reorganizations since
> the core code is the only place that needs to know where to get the chip
> from.
Hm, ok, Thomas also don't like this change, I will drop this one, thanks.
Thanks!
Yijing.
>
> Thierry
>
--
Thanks!
Yijing
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