[dhowells-fs:fscache-iter 22/62] include/linux/fscache.h:80:30: sparse: sparse: don't know how to apply mode to unsigned int enum fscache_cookie_stage

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

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git fscache-iter
head:   b4a9eadc021941103fd0c925e7e7b38516ffaf39
commit: 5db57596b0d3e5e78f7202dd50a58cc154f66b7c [22/62] fscache: Replace the object management state machine
:::::: branch date: 6 days ago
:::::: commit date: 6 days ago
config: x86_64-randconfig-s022-20200602 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-243-gc100a7ab-dirty
        git checkout 5db57596b0d3e5e78f7202dd50a58cc154f66b7c
        # save the attached .config to linux build tree
        make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

>> include/linux/fscache.h:80:30: sparse: sparse: don't know how to apply mode to unsigned int enum fscache_cookie_stage

# https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit/?id=5db57596b0d3e5e78f7202dd50a58cc154f66b7c
git remote add dhowells-fs https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git
git remote update dhowells-fs
git checkout 5db57596b0d3e5e78f7202dd50a58cc154f66b7c
vim +80 include/linux/fscache.h

2d6fff63703739 David Howells 2009-04-03  68  
5db57596b0d3e5 David Howells 2020-02-06  69  /*
5db57596b0d3e5 David Howells 2020-02-06  70   * Data object state.
5db57596b0d3e5 David Howells 2020-02-06  71   */
5db57596b0d3e5 David Howells 2020-02-06  72  enum fscache_cookie_stage {
5db57596b0d3e5 David Howells 2020-02-06  73  	FSCACHE_COOKIE_STAGE_QUIESCENT,		/* The cookie is uncached */
5db57596b0d3e5 David Howells 2020-02-06  74  	FSCACHE_COOKIE_STAGE_INITIALISING,	/* The in-memory structs are being inited */
5db57596b0d3e5 David Howells 2020-02-06  75  	FSCACHE_COOKIE_STAGE_LOOKING_UP,	/* The cache object is being looked up */
5db57596b0d3e5 David Howells 2020-02-06  76  	FSCACHE_COOKIE_STAGE_NO_DATA_YET,	/* The cache has no data, read to network */
5db57596b0d3e5 David Howells 2020-02-06  77  	FSCACHE_COOKIE_STAGE_ACTIVE,		/* The cache is active, readable and writable */
5db57596b0d3e5 David Howells 2020-02-06  78  	FSCACHE_COOKIE_STAGE_INVALIDATING,	/* The cache is being invalidated */
5db57596b0d3e5 David Howells 2020-02-06  79  	FSCACHE_COOKIE_STAGE_DEAD,		/* The cache object is dead */
5db57596b0d3e5 David Howells 2020-02-06 @80  } __attribute__((mode(byte)));
5db57596b0d3e5 David Howells 2020-02-06  81  

---
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