Re: [PATCH V3 4/4] dma: add Qualcomm Technologies HIDMA channel driver

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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
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