From: Hiroo Matsumoto <matsumoto.hiroo@jp•fujitsu.com>
To: linuxppc-dev@lists•ozlabs.org
Subject: Re: [RFC] powerpc: set_dma_ops for pci hotplug
Date: Fri, 13 Apr 2012 09:03:47 +0900 [thread overview]
Message-ID: <4F876D63.4060103@jp.fujitsu.com> (raw)
In-Reply-To: <4F867083.2090200@jp.fujitsu.com>
Hi
I'm so sorry, but there is a better way than this way with
pcibios_enable_device() for issue.
I will write another code soon, so please wait.
Regards.
Hiroo MATSUMOTO
> Hi
>
>
> I'm trying to use PCI Express Hot Plug on powerpc platform.
> But PCI driver returns error when hotplug.
> Error log is as below.
> http://www.spinics.net/lists/linux-pci/msg14534.html
>
> Some of PCI driver needs dma_ops.
> On x86 platform, dma_ops is getting from external variable.
> On powerpc platform, dma_ops is getting from archdata.dma_ops in struct
> device.
> There is a problem that archdata.dma_ops is set only when boot with
> pcibios_setup_bus_devices but not set when hotplug.
> So when hotplug, PCI driver's probe will return error.
>
> I add code of checking and setting dma_ops in pcibios_enable_device.
> It is called from pci_enable_device_xxx in PCI driver's probe before
> checking dma_ops.
> And PCI driver works good when hotplug.
>
>
> Regards.
>
> Hiroo MATSUMOTO
>
prev parent reply other threads:[~2012-04-13 0:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-12 6:04 [RFC] powerpc: set_dma_ops for pci hotplug Hiroo Matsumoto
2012-04-13 0:03 ` Hiroo Matsumoto [this message]
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