linux-kernel - Re: [PATCH v1] dma: imx-sdma: add support for sdma memory copy

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Date:	Tue, 22 Apr 2014 10:28:05 +0000
From:	"Shevchenko, Andriy" <andriy.shevchenko@...el.com>
To:	Robin Gong <b38343@...escale.com>
CC:	"Koul, Vinod" <vinod.koul@...el.com>,
	"Williams, Dan J" <dan.j.williams@...el.com>,
	"dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v1] dma: imx-sdma: add support for sdma memory copy

On Fri, 2014-04-18 at 17:41 +0800, Robin Gong wrote:
> On Thu, Apr 17, 2014 at 10:24:50AM +0000, Shevchenko, Andriy wrote:
> > On Thu, 2014-04-17 at 18:01 +0800, Robin Gong wrote:

[]

> > > +	dev_dbg(sdma->dev, "memcpy: %x->%x, len=%d, channel=%d.\n",
> > 
> > %pad for dma_addr_t variables.
> >
> Yes, %x here is not proper, will be %#llx here to align with others similar
> code in this file.

Why %#llx? You don't need the specific casting since kernel has special
specifiers for phys_addr_t and dma_addr_t and their derivatives (see
Documentation/printk-formats.txt)

> > > +		dev_dbg(sdma->dev, "entry %d: count: %d dma: 0x%08x %s%s\n",
> > > +				i, count, sg_src->dma_address,
> > 
> > %pad for dma_addr_t.
> > 
> Accept the idea, same as the above.

Same as above.

-- 
Andy Shevchenko <andriy.shevchenko@...el.com>
Intel Finland Oy
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