Messages in this thread | | | Date | Wed, 04 May 2016 10:14:46 +0200 | From | Krzysztof Opasiak <> | Subject | 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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