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 <[EMAIL PROTECTED]> wrote:
On Fri, 15 Jun 2007 17:04:00 +0200 Vegard Nossum wrote:

> On 6/15/07, jidong xiao <[EMAIL PROTECTED]> 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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