Re: [PATCH v2 2/4] dmaengine: sun6i: Do not use virt_to_phys

From: kernel test robot <lkp@intel.com>
To: Samuel Holland <samuel@sholland.org>,
	Vinod Koul <vkoul@kernel.org>,
	dmaengine@vger.kernel.org
Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org,
	Samuel Holland <samuel@sholland.org>,
	Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Maxime Ripard <mripard@kernel.org>,
	Rob Herring <robh+dt@kernel.org>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev
Subject: Re: [PATCH v2 2/4] dmaengine: sun6i: Do not use virt_to_phys
Date: Mon, 11 Apr 2022 16:20:58 +0800	[thread overview]
Message-ID: <202204111641.yuvoMU5q-lkp@intel.com> (raw)
In-Reply-To: <20220411044633.39014-3-samuel@sholland.org>

Hi Samuel,

I love your patch! Perhaps something to improve:

[auto build test WARNING on vkoul-dmaengine/next]
[also build test WARNING on sunxi/sunxi/for-next v5.18-rc2 next-20220411]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/intel-lab-lkp/linux/commits/Samuel-Holland/dmaengine-sun6i-Allwinner-D1-support/20220411-124826
base:   https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git next
config: hexagon-randconfig-r041-20220410 (https://download.01.org/0day-ci/archive/20220411/202204111641.yuvoMU5q-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c6e83f560f06cdfe8aa47b248d8bdc58f947274b)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/280420721fd264a03a3d3f9fbe2b4e6bfddd0f79
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Samuel-Holland/dmaengine-sun6i-Allwinner-D1-support/20220411-124826
        git checkout 280420721fd264a03a3d3f9fbe2b4e6bfddd0f79
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/dma/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/dma/sun6i-dma.c:253:15: warning: format specifies type 'unsigned long' but the argument has type 'int' [-Wformat]
                   pchan->idx, pchan->base - sdev->base,
                               ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/dev_printk.h:155:39: note: expanded from macro 'dev_dbg'
           dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
                                        ~~~     ^~~~~~~~~~~
   include/linux/dynamic_debug.h:167:19: note: expanded from macro 'dynamic_dev_dbg'
                              dev, fmt, ##__VA_ARGS__)
                                   ~~~    ^~~~~~~~~~~
   include/linux/dynamic_debug.h:152:56: note: expanded from macro '_dynamic_func_call'
           __dynamic_func_call(__UNIQUE_ID(ddebug), fmt, func, ##__VA_ARGS__)
                                                                 ^~~~~~~~~~~
   include/linux/dynamic_debug.h:134:15: note: expanded from macro '__dynamic_func_call'
                   func(&id, ##__VA_ARGS__);               \
                               ^~~~~~~~~~~
   1 warning generated.

vim +253 drivers/dma/sun6i-dma.c

   240	
   241	static inline void sun6i_dma_dump_chan_regs(struct sun6i_dma_dev *sdev,
   242						    struct sun6i_pchan *pchan)
   243	{
   244		dev_dbg(sdev->slave.dev, "Chan %d reg: 0x%lx\n"
   245			"\t___en(%04x): \t0x%08x\n"
   246			"\tpause(%04x): \t0x%08x\n"
   247			"\tstart(%04x): \t0x%08x\n"
   248			"\t__cfg(%04x): \t0x%08x\n"
   249			"\t__src(%04x): \t0x%08x\n"
   250			"\t__dst(%04x): \t0x%08x\n"
   251			"\tcount(%04x): \t0x%08x\n"
   252			"\t_para(%04x): \t0x%08x\n\n",
 > 253			pchan->idx, pchan->base - sdev->base,
   254			DMA_CHAN_ENABLE,
   255			readl(pchan->base + DMA_CHAN_ENABLE),
   256			DMA_CHAN_PAUSE,
   257			readl(pchan->base + DMA_CHAN_PAUSE),
   258			DMA_CHAN_LLI_ADDR,
   259			readl(pchan->base + DMA_CHAN_LLI_ADDR),
   260			DMA_CHAN_CUR_CFG,
   261			readl(pchan->base + DMA_CHAN_CUR_CFG),
   262			DMA_CHAN_CUR_SRC,
   263			readl(pchan->base + DMA_CHAN_CUR_SRC),
   264			DMA_CHAN_CUR_DST,
   265			readl(pchan->base + DMA_CHAN_CUR_DST),
   266			DMA_CHAN_CUR_CNT,
   267			readl(pchan->base + DMA_CHAN_CUR_CNT),
   268			DMA_CHAN_CUR_PARA,
   269			readl(pchan->base + DMA_CHAN_CUR_PARA));
   270	}
   271	

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