Re: [PATCH 2/2] Add Intel LGM soc DMA support.

[kernel test robot <lkp@intel.com>]

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Hi Amireddy,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on robh/for-next]
[also build test WARNING on linus/master v5.8-rc1 next-20200616]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Amireddy-Mallikarjuna-reddy/Add-Intel-LGM-soc-DMA-support/20200610-202116
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: nds32-randconfig-r034-20200617 (attached as .config)
compiler: nds32le-linux-gcc (GCC) 9.3.0
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
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nds32 

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 >>, old ones prefixed by <<):

In file included from ./arch/nds32/include/generated/asm/bug.h:1,
from include/linux/bug.h:5,
from include/linux/debug_locks.h:7,
from include/linux/mutex.h:21,
from include/linux/notifier.h:14,
from include/linux/clk.h:14,
from drivers/dma/lgm/lgm-dma.c:9:
include/linux/dma-mapping.h: In function 'dma_map_resource':
arch/nds32/include/asm/memory.h:82:32: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
82 | #define pfn_valid(pfn)  ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))
|                                ^~
include/asm-generic/bug.h:139:27: note: in definition of macro 'WARN_ON_ONCE'
139 |  int __ret_warn_once = !!(condition);            |                           ^~~~~~~~~
include/linux/dma-mapping.h:352:19: note: in expansion of macro 'pfn_valid'
352 |  if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr))))
|                   ^~~~~~~~~
drivers/dma/lgm/lgm-dma.c: At top level:
>> drivers/dma/lgm/lgm-dma.c:729:5: warning: no previous prototype for 'intel_dma_chan_desc_cfg' [-Wmissing-prototypes]
729 | int intel_dma_chan_desc_cfg(struct dma_chan *chan, dma_addr_t desc_base,
|     ^~~~~~~~~~~~~~~~~~~~~~~

vim +/intel_dma_chan_desc_cfg +729 drivers/dma/lgm/lgm-dma.c

   728	
 > 729	int intel_dma_chan_desc_cfg(struct dma_chan *chan, dma_addr_t desc_base,
   730				    int desc_num)
   731	{
   732		return ldma_chan_desc_cfg(to_ldma_chan(chan), desc_base, desc_num);
   733	}
   734	EXPORT_SYMBOL_GPL(intel_dma_chan_desc_cfg);
   735	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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