linux-kernel - Re: [PATCH v3 10/27] PCI/MSI: Remove useless bus->msi assignment

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Message-ID: <5448A2F2.7060001@huawei.com>
Date:	Thu, 23 Oct 2014 14:40:50 +0800
From:	Yijing Wang <wangyijing@...wei.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
CC:	<linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	Xinwei Hu <huxinwei@...wei.com>, Wuyun <wuyun.wu@...wei.com>,
	<linux-arm-kernel@...ts.infradead.org>,
	Russell King <linux@....linux.org.uk>,
	<linux-arch@...r.kernel.org>, <arnab.basu@...escale.com>,
	<Bharat.Bhushan@...escale.com>, <x86@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Konrad Rzeszutek Wilk" <konrad.wilk@...cle.com>,
	<xen-devel@...ts.xenproject.org>, Joerg Roedel <joro@...tes.org>,
	<iommu@...ts.linux-foundation.org>, <linux-mips@...ux-mips.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	<linuxppc-dev@...ts.ozlabs.org>, <linux-s390@...r.kernel.org>,
	Sebastian Ott <sebott@...ux.vnet.ibm.com>,
	"Tony Luck" <tony.luck@...el.com>, <linux-ia64@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	<sparclinux@...r.kernel.org>, Chris Metcalf <cmetcalf@...era.com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Lucas Stach <l.stach@...gutronix.de>,
	David Vrabel <david.vrabel@...rix.com>,
	"Sergei Shtylyov" <sergei.shtylyov@...entembedded.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Thierry Reding <thierry.reding@...il.com>,
	"Thomas Petazzoni" <thomas.petazzoni@...e-electrons.com>,
	Liviu Dudau <liviu@...au.co.uk>
Subject: Re: [PATCH v3 10/27] PCI/MSI: Remove useless bus->msi assignment

On 2014/10/23 13:41, Bjorn Helgaas wrote:
> On Wed, Oct 15, 2014 at 11:06:58AM +0800, Yijing Wang wrote:
>> Now msi chip is saved in pci_sys_data in arm,
>> we could clean the bus->msi assignment in
>> pci core.
>>
>> Signed-off-by: Yijing Wang <wangyijing@...wei.com>
>> CC: Thierry Reding <thierry.reding@...il.com>
>> CC: Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
>> ---
>>  drivers/pci/probe.c |    1 -
>>  1 files changed, 0 insertions(+), 1 deletions(-)
>>
>> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
>> index efa48dc..98bf4c3 100644
>> --- a/drivers/pci/probe.c
>> +++ b/drivers/pci/probe.c
>> @@ -682,7 +682,6 @@ static struct pci_bus *pci_alloc_child_bus(struct pci_bus *parent,
>>  
>>  	child->parent = parent;
>>  	child->ops = parent->ops;
>> -	child->msi = parent->msi;
> 
> This needs an explanation of why ARM was the only arch to depend on this.

OK, will add explanation in next version.

> 
>>  	child->sysdata = parent->sysdata;
>>  	child->bus_flags = parent->bus_flags;
>>  
>> -- 
>> 1.7.1
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-pci" in
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> 
> .
> 


-- 
Thanks!
Yijing

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