RE: [PATCH 4/5] usb: gadget/uvc: Port UVC webcam gadget to use videobuf2 framework

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Hi Felipe,

> -----Original Message-----
> From: Felipe Balbi [mailto:balbi@xxxxxx]
> Sent: Monday, June 04, 2012 8:44 PM
> To: Bhupesh SHARMA
> Cc: laurent.pinchart@xxxxxxxxxxxxxxxx; linux-usb@xxxxxxxxxxxxxxx;
> balbi@xxxxxx; linux-media@xxxxxxxxxxxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [PATCH 4/5] usb: gadget/uvc: Port UVC webcam gadget to use
> videobuf2 framework
> 
> On Fri, Jun 01, 2012 at 03:08:57PM +0530, Bhupesh Sharma wrote:
> > This patch reworks the videobuffer management logic present in the
> UVC
> > webcam gadget and ports it to use the "more apt" videobuf2 framework
> > for video buffer management.
> >
> > To support routing video data captured from a real V4L2 video capture
> > device with a "zero copy" operation on videobuffers (as they pass
> from
> > the V4L2 domain to UVC domain via a user-space application), we need
> > to support USER_PTR IO method at the UVC gadget side.
> >
> > So the V4L2 capture device driver can still continue to use MMAO IO
> > method and now the user-space application can just pass a pointer to
> > the video buffers being DeQueued from the V4L2 device side while
> > Queueing them at the UVC gadget end. This ensures that we have a
> > "zero-copy" design as the videobuffers pass from the V4L2 capture
> device to the UVC gadget.
> >
> > Note that there will still be a need to apply UVC specific payload
> > headers on top of each UVC payload data, which will still require a
> > copy operation to be performed in the 'encode' routines of the UVC
> gadget.
> >
> > Signed-off-by: Bhupesh Sharma <bhupesh.sharma@xxxxxx>
> 
> this patch doesn't apply. Please refresh on top of v3.5-rc1 or my
> gadget branch which I will update in a while.
> 

I rebased and submitted my changes on your "gadget-for-v3.5" tag.
Should I now refresh my patches on top of your "v3.5-rc1" branch ?

I am a bit confused on what is the latest gadget branch to be used now.
Thanks for helping out.

Regards,
Bhupesh
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