linux-kernel - Re: [PATCH] [media] zl10353: use div_u64 instead of do

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Message-ID: <5158925.0PEQLt1vYj@wuerfel>
Date:	Fri, 12 Feb 2016 22:45:34 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Nicolas Pitre <nicolas.pitre@...aro.org>,
	linux-kernel@...r.kernel.org,
	Stefan Richter <stefanr@...6.in-berlin.de>,
	linux-media@...r.kernel.org,
	Mauro Carvalho Chehab <mchehab@....samsung.com>
Subject: Re: [PATCH] [media] zl10353: use div_u64 instead of do_div

On Friday 12 February 2016 16:38:53 Nicolas Pitre wrote:
> On Fri, 12 Feb 2016, Arnd Bergmann wrote:
> 
> > On Friday 12 February 2016 13:21:33 Nicolas Pitre wrote:
> > > This is all related to the gcc bug for which I produced a test case 
> > > here:
> > > 
> > > http://article.gmane.org/gmane.linux.kernel.cross-arch/29801
> > > 
> > > Do you know if this is fixed in recent gcc?
> > 
> > I have a fairly recent gcc, but I also never got around to submit
> > it properly.
> > 
> > However, I did stumble over an older patch I did now, which I could
> > not remember what it was good for. It does fix the problem, and
> > it seems to be a better solution.
> 
> WTF?

Even better, it also fixes this one:

drivers/mtd/chips/cfi_cmdset_0020.c: In function 'cfi_staa_write_buffers':
drivers/mtd/chips/cfi_cmdset_0020.c:651:1: error: the frame size of 1064 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]

I have not even looked what that is, I only saw show up the other day.

	Arnd