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SubjectRe: [PATCH linux-next] arm: dma fix returnvar.cocci warnings
Hi jing,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on next-20210819]

url: https://github.com/0day-ci/linux/commits/jing-yangyang/arm-dma-fix-returnvar-cocci-warnings/20210820-101604
base: 33e65b1f975cd2814fc0ea9617250fc4c1d7a553
config: arm-defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
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
# https://github.com/0day-ci/linux/commit/a5037ed7d3a617c82c996788afb1a703170eb192
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review jing-yangyang/arm-dma-fix-returnvar-cocci-warnings/20210820-101604
git checkout a5037ed7d3a617c82c996788afb1a703170eb192
# save the attached .config to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

In file included from arch/arm/mach-omap2/dma.c:30:
arch/arm/mach-omap2/dma.c: In function 'configure_dma_errata':
>> include/linux/omap-dma.h:105:42: error: 'errata' undeclared (first use in this function)
105 | #define SET_DMA_ERRATA(id) (errata |= (id))
| ^~~~~~
arch/arm/mach-omap2/dma.c:112:17: note: in expansion of macro 'SET_DMA_ERRATA'
112 | SET_DMA_ERRATA(DMA_ERRATA_IFRAME_BUFFERING);
| ^~~~~~~~~~~~~~
include/linux/omap-dma.h:105:42: note: each undeclared identifier is reported only once for each function it appears in
105 | #define SET_DMA_ERRATA(id) (errata |= (id))
| ^~~~~~
arch/arm/mach-omap2/dma.c:112:17: note: in expansion of macro 'SET_DMA_ERRATA'
112 | SET_DMA_ERRATA(DMA_ERRATA_IFRAME_BUFFERING);
| ^~~~~~~~~~~~~~


vim +/errata +105 include/linux/omap-dma.h

45c3eb7d3a07eb Tony Lindgren 2012-11-30 102
45c3eb7d3a07eb Tony Lindgren 2012-11-30 103 /* Errata handling */
45c3eb7d3a07eb Tony Lindgren 2012-11-30 104 #define IS_DMA_ERRATA(id) (errata & (id))
45c3eb7d3a07eb Tony Lindgren 2012-11-30 @105 #define SET_DMA_ERRATA(id) (errata |= (id))
45c3eb7d3a07eb Tony Lindgren 2012-11-30 106

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