linux-kernel - Re: [PATCH 1/7] usb: gadget: pxa25x_udc: move register definitions from arch

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Message-ID: <2664702.bXd9nOWVFO@wuerfel>
Date:	Fri, 29 Jan 2016 11:07:18 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Robert Jarzmik <robert.jarzmik@...e.fr>
Cc:	Felipe Balbi <balbi@...nel.org>, Imre Kaloz <kaloz@...nwrt.org>,
	Krzysztof Halasa <khalasa@...p.pl>,
	Russell King <linux@....linux.org.uk>,
	Daniel Mack <daniel@...que.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-arm-kernel@...ts.infradead.org, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/7] usb: gadget: pxa25x_udc: move register definitions from arch

On Friday 29 January 2016 10:32:07 Robert Jarzmik wrote:
> > This addresses both issues by moving all the definitions into the
> > pxa25x_udc driver itself. It turns out the only difference between
> > them was 'UDCCS_IO_ROF', and that could well be a mistake when it
> > was incorrectly copied from pxa25x to ixp4xx.
> Hi Arnd,
> 
> Is there a reason to have chosen to move into pxa25_udc.c instead of
> drivers/usb/gadget/udc/pxa25x_udc.h ? pxa27x_udc has a .h in the same directory
> with register definitions, hence the question.

Yes: The register definitions are only used in a single .c file and
are not an interface between files, so it's better to have them in
the file that uses them.

I could have continued the cleanup and moved the two headers into the
respective drivers as well, but I had to stop somewhere ;-)

	Arnd