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Date: Wed, 17 Dec 2014 14:14:10 +0800
From: Yijing Wang <wangyijing@huawei.com>
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To: ratheesh kannoth <ratheesh.ksz@gmail.com>
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Subject: Re: sysfs-pci remove
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On 2014/12/17 14:08, ratheesh kannoth wrote:
> On Wed, Dec 17, 2014 at 11:20 AM, Yijing Wang <wangyijing@huawei.com> wrote:
>> If the device 06:0.0 was removed by "echo 1 > /sys/.../0000:6:0.0/remove",
>> you could not see lspci info for this device anymore.
>> Do you really remove the device ?
> 
> Oh , my bad. I did not remove the device. I did an unbind
> 
>  echo -n "0000:06:00.0" > /sys/bus/pci/drivers/enic/unbind0
> 
> Unbind wont remove it from /proc/iomem ? I thought enic pci driver is
> the one is calling ioremap on those memory ?

Unbind won't release PCI device bar resource, resources in /proc/iomem is the
physical address resource(added by request_resource()), if you iounmap the bar resource,
it won't change anything in /proc/iomem.

> 
> Thanks,
> Ratheesh
> 
> 


-- 
Thanks!
Yijing