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Re: [PATCH 1/2] usb: configfs: allow UDC binding rule configured as binding to *any* UDC

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On 05/03/2016 05:04 AM, changbin.du@intel.com wrote:
> From: "Du, Changbin" <changbin.du@gmail.com>
> 
> On most platforms, there is only one device controller available.
> In this case, we desn't care the UDC's name. So let's ignore the
> name by setting 'UDC' to 'any'.

Hmm libubsgx allows to do this for a very long time. You simply pass
NULL instead of pointer to usbg_udc.

It is also possible to do this from command line, just simply:

$ echo `ls -1 /sys/class/udc | head -n 1` > UDC

So if we can easily do this from user space what's the benefit of adding
this special "any" keyword to kernel?

> And also we can change UDC name
> at any time if it is not binded (no need set to "" first).
> 

Not sure if:

$ echo "" > UDC

is really a problem. Personally I'm quite used to situation in which I
have to turn the light off before turning it on once again;)

Cheers,
-- 
Krzysztof Opasiak
Samsung R&D Institute Poland
Samsung Electronics

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[PATCH 1/2] usb: configfs: allow UDC binding rule configured as binding to *any* UDC changbin.du@intel.com - 2016-05-03 05:20 +0200
  Re: [PATCH 1/2] usb: configfs: allow UDC binding rule configured as  binding to *any* UDC Krzysztof Opasiak <k.opasiak@samsung.com> - 2016-05-04 10:20 +0200
    RE: [PATCH 1/2] usb: configfs: allow UDC binding rule configured as  binding to *any* UDC "Du, Changbin" <changbin.du@intel.com> - 2016-05-05 07:50 +0200
      Re: [PATCH 1/2] usb: configfs: allow UDC binding rule configured as  binding to *any* UDC Krzysztof Opasiak <k.opasiak@samsung.com> - 2016-05-05 09:40 +0200
        RE: [PATCH 1/2] usb: configfs: allow UDC binding rule configured as  binding to *any* UDC "Du, Changbin" <changbin.du@intel.com> - 2016-05-06 04:50 +0200
          Re: [PATCH 1/2] usb: configfs: allow UDC binding rule configured as  binding to *any* UDC Krzysztof Opasiak <k.opasiak@samsung.com> - 2016-05-06 08:00 +0200

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