From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [119.145.14.66]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 6EEF01A0874 for ; Fri, 26 Sep 2014 11:59:36 +1000 (EST) Message-ID: <5424C85E.4090006@huawei.com> Date: Fri, 26 Sep 2014 09:58:54 +0800 From: Yijing Wang MIME-Version: 1.0 To: Thierry Reding Subject: Re: [PATCH v2 01/22] PCI/MSI: Clean up struct msi_chip argument References: <1411614872-4009-1-git-send-email-wangyijing@huawei.com> <1411614872-4009-2-git-send-email-wangyijing@huawei.com> <20140925071536.GG12423@ulmo> In-Reply-To: <20140925071536.GG12423@ulmo> Content-Type: text/plain; charset="ISO-8859-1" Cc: linux-mips@linux-mips.org, linux-ia64@vger.kernel.org, linux-pci@vger.kernel.org, Bharat.Bhushan@freescale.com, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Russell King , Joerg Roedel , x86@kernel.org, Sebastian Ott , xen-devel@lists.xenproject.org, arnab.basu@freescale.com, Arnd Bergmann , Konrad Rzeszutek Wilk , Chris Metcalf , Bjorn Helgaas , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Thomas Petazzoni , Xinwei Hu , Tony Luck , Sergei Shtylyov , linux-kernel@vger.kernel.org, Ralf Baechle , iommu@lists.linux-foundation.org, David Vrabel , Wuyun , linuxppc-dev@lists.ozlabs.org, "David S. Miller" , Lucas Stach List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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