linux-kernel - Re: [kbuild-all] [PATCH V3 4/4] dma: add Qualcomm Technologies HIDMA channel driver

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Message-ID: <20151111022103.GA29459@wfg-t540p.sh.intel.com>
Date:	Wed, 11 Nov 2015 10:21:03 +0800
From:	Fengguang Wu <lkp@...el.com>
To:	Sinan Kaya <okaya@...eaurora.org>
Cc:	linux-arm-kernel@...ts.infradead.org,
	Mark Rutland <mark.rutland@....com>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Vinod Koul <vinod.koul@...el.com>, jcm@...hat.com,
	timur@...eaurora.org, Kumar Gala <galak@...eaurora.org>,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	Rob Herring <robh+dt@...nel.org>, kbuild-all@...org,
	agross@...eaurora.org, dmaengine@...r.kernel.org,
	Dan Williams <dan.j.williams@...el.com>,
	linux-arm-msm@...r.kernel.org, cov@...eaurora.org
Subject: Re: [kbuild-all] [PATCH V3 4/4] dma: add Qualcomm Technologies HIDMA
 channel driver

Hi Sinan,

Sorry please ignore this warning -- it's actually a problem specific
to the mn10300 arch. I'll disable such warning in mn10300 in future.

Thanks,
Fengguang

On Sun, Nov 08, 2015 at 07:43:52PM -0500, Sinan Kaya wrote:
> 
> 
> On 11/8/2015 2:13 PM, kbuild test robot wrote:
> >Hi Sinan,
> >
> >[auto build test WARNING on: robh/for-next]
> >[also build test WARNING on: v4.3 next-20151106]
> >
> >url:    https://github.com/0day-ci/linux/commits/Sinan-Kaya/ma-add-Qualcomm-Technologies-HIDMA-driver/20151108-125824
> >base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux for-next
> >config: mn10300-allyesconfig (attached as .config)
> >reproduce:
> >         wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
> >         chmod +x ~/bin/make.cross
> >         # save the attached .config to linux build tree
> >         make.cross ARCH=mn10300
> >
> >All warnings (new ones prefixed by >>):
> >
> >    In file included from include/linux/printk.h:277:0,
> >                     from include/linux/kernel.h:13,
> >                     from include/linux/list.h:8,
> >                     from include/linux/kobject.h:20,
> >                     from include/linux/device.h:17,
> >                     from include/linux/dmaengine.h:20,
> >                     from drivers/dma/qcom/hidma.c:45:
> >    drivers/dma/qcom/hidma.c: In function 'hidma_prep_dma_memcpy':
> >    include/linux/dynamic_debug.h:64:16: warning: format '%zu' expects argument of type 'size_t', but argument 7 has type 'unsigned int' [-Wformat=]
> >      static struct _ddebug  __aligned(8)   \
> >                    ^
> >    include/linux/dynamic_debug.h:84:2: note: in expansion of macro 'DEFINE_DYNAMIC_DEBUG_METADATA'
> >      DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);  \
> >      ^
> >    include/linux/device.h:1171:2: note: in expansion of macro 'dynamic_dev_dbg'
> >      dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \
> >      ^
> >>>drivers/dma/qcom/hidma.c:391:2: note: in expansion of macro 'dev_dbg'
> >      dev_dbg(mdma->ddev.dev,
> >      ^
> >
> >vim +/dev_dbg +391 drivers/dma/qcom/hidma.c
> >
> >    375	
> >    376		mchan->allocated = 0;
> >    377		spin_unlock_irqrestore(&mchan->lock, irqflags);
> >    378		dev_dbg(mdma->ddev.dev, "freed channel for %u\n", mchan->dma_sig);
> >    379	}
> >    380	
> >    381	
> >    382	static struct dma_async_tx_descriptor *
> >    383	hidma_prep_dma_memcpy(struct dma_chan *dmach, dma_addr_t dma_dest,
> >    384				dma_addr_t dma_src, size_t len, unsigned long flags)
> >    385	{
> >    386		struct hidma_chan *mchan = to_hidma_chan(dmach);
> >    387		struct hidma_desc *mdesc = NULL;
> >    388		struct hidma_dev *mdma = mchan->dmadev;
> >    389		unsigned long irqflags;
> >    390	
> >  > 391		dev_dbg(mdma->ddev.dev,
> >    392			"memcpy: chan:%p dest:%pad src:%pad len:%zu\n", mchan,
> >    393			&dma_dest, &dma_src, len);
> >    394	
> 
> What am I missing?
> 
> len is size_t. This page says use %zu for size_t.
> 
> https://www.kernel.org/doc/Documentation/printk-formats.txt
> 
> 
> 
> >    395		/* Get free descriptor */
> >    396		spin_lock_irqsave(&mchan->lock, irqflags);
> >    397		if (!list_empty(&mchan->free)) {
> >    398			mdesc = list_first_entry(&mchan->free, struct hidma_desc,
> >    399						node);
> >
> >---
> >0-DAY kernel test infrastructure                Open Source Technology Center
> >https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
> >
> 
> 
> 
> -- 
> Sinan Kaya
> Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux
> Foundation Collaborative Project
> _______________________________________________
> kbuild-all mailing list
> kbuild-all@...ts.01.org
> https://lists.01.org/mailman/listinfo/kbuild-all
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