From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Carpenter Date: Tue, 13 Aug 2013 06:35:33 +0000 Subject: Re: [patch] mtd: nand: silence some shift wrap warnings Message-Id: <20130813063533.GP5502@mwanda> List-Id: References: <20130809094904.GC29282@elgon.mountain> <5209D0C6.5070307@freescale.com> In-Reply-To: <5209D0C6.5070307@freescale.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit To: Huang Shijie Cc: Artem Bityutskiy , kernel-janitors@vger.kernel.org, Matthieu CASTET , linux-mtd@lists.infradead.org, Brian Norris , David Woodhouse On Tue, Aug 13, 2013 at 02:23:02PM +0800, Huang Shijie wrote: > 于 2013年08月09日 17:49, Dan Carpenter 写道: > >There are static checkers which complain when we declare variables as > > could you tell me which "checker" and how do you test it? > > you'd better post the warning message here. > It's some stuff I'm working on but haven't released yet. But "len" and "ofs" are declared as u64 and loff_t. If they were declared as unsigned long then maybe the current code would be fine because the code would be correct-ish on 32 bit arches. So this is definitely the right thing to do. regards, dan carpenter