RE: [BUILD BREAK] usb: gadget: fsl_mxc_udc can't compile on current v3.8-rc3

-----Original Message-----
From: Felipe Balbi [mailto:balbi@ti.com]
Sent: Friday, January 11, 2013 3:18 PM
To: Li Yang-R58472
Cc: balbi@ti.com; Chen Peter-B29397; Mehresh Ramneek-B31383;
kernel@pengutronix.de; Greg KH; linux-usb@vger.kernel.org; linuxppc-
dev@lists.ozlabs.org
Subject: Re: [BUILD BREAK] usb: gadget: fsl_mxc_udc can't compile on
current v3.8-rc3
=20
Hi,
=20
On Fri, Jan 11, 2013 at 09:24:16AM +0000, Li Yang-R58472 wrote:

quoted

quoted

-----Original Message-----
From: Felipe Balbi [mailto:balbi@ti.com]
Sent: Friday, January 11, 2013 4:41 PM
To: Chen Peter-B29397
Cc: balbi@ti.com; kernel@pengutronix.de; Li Yang-R58472; Greg KH;
linux- usb@vger.kernel.org; linuxppc-dev@lists.ozlabs.org
Subject: Re: [BUILD BREAK] usb: gadget: fsl_mxc_udc can't compile on
current v3.8-rc3

Hi,

On Fri, Jan 11, 2013 at 08:35:29AM +0000, Chen Peter-B29397 wrote:

quoted

quoted

quoted

I am working on it, but there are two versions, this one and

chipidea's.

quoted

quoted

quoted

Anyway, I will send a patch to fix this problem.

if you're already using chipidea, then send me a patch removing
this driver and focus your effort on chipidea.

Added Sascha

Now, not all of FSL i.mx USB can move to use chipidea due to some
platform and USB PHY problem.

then we need to target fixing those problems and moving to chipidea
completely at some point. There's no reason to duplicate efforts if
we already have a re-usable driver in tree, right ?

Let's fix this build break and focus on making sure all i.MX
platforms can use chipidea so we can drop fsl udc on next merge
window. That would be a great patchset to see.

I do agree that we need move to use the chipidea driver and eventually
remove the fsl udc driver, but there were many users of the current
driver such as PowerPC and Coldfire platforms besides the i.MX
platforms.  The support for them with chipidea driver could also be
broken for now.  I would suggest to have a transitional period that
both drivers are kept while new development be based on the new
driver.

=20
right, right. That can be done as long as 'transitional period' isn't 20
years. At least make a plan to remove fsl udc, if it doesn't happen in
the next 4 merge windows, I will remove it myself to force people to
reuse other drivers. There is no reason to keep both drivers around.
=20

quoted

Added Ramneek.  What do you think of the current status for chipidea
driver on PowerPC platforms?

=20
that would be great to know, indeed.
=20
--
balbi

As per my info, chipidea drv has never been tested for any ppc platforms we=
 have...
Also not sure how long chipidea will be used for ppc platforms...
Let me get back to you on this

-Ramneek=20