linux-kernel - Re: How to printk unsigned long long variable?

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Message-ID: <4104961b0706150839t1a54ccdaq4ddc747d04538a19@mail.gmail.com>
Date:	Fri, 15 Jun 2007 23:39:59 +0800
From:	"jidong xiao" <jidong.xiao@...il.com>
To:	"Randy Dunlap" <randy.dunlap@...cle.com>
Cc:	"Vegard Nossum" <vegard.nossum@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: How to printk unsigned long long variable?

Thanks all.
Is this right?
        dev->dev.dma_mask = bus->controller->dma_mask;
        printk(KERN_ERR "hey,jason,see,dma_mask is
%llu\n",*(dev->dev.dma_mask));


On 6/15/07, Randy Dunlap <randy.dunlap@...cle.com> wrote:
> On Fri, 15 Jun 2007 17:04:00 +0200 Vegard Nossum wrote:
>
> > On 6/15/07, jidong xiao <jidong.xiao@...il.com> wrote:
> > > typedef unsigned long long u64;
> > > u64             *dma_mask;
> > > Then how to use printk() to print out a dma_mask variable?
> >
> > In regular printf(), this would be specified by the format "%llu". Try that?
>
> and cast dma_mask to (unsigned long long), at least in kernel printk()
> calls.
>
> ---
> ~Randy
> *** Remember to use Documentation/SubmitChecklist when testing your code ***
>
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