[asahilinux:bits/050-nvme 1/1] drivers/nvme/host/apple.c:216:14: sparse: sparse: symbol 'flush_interval' was not declared. Should it be static?

[asahilinux:bits/050-nvme 1/1] drivers/nvme/host/apple.c:216:14: sparse: sparse: symbol 'flush_interval' was not declared. Should it be static?

[kernel test robot]

tree:   https://github.com/AsahiLinux/linux bits/050-nvme
head:   801c12513602572d32acfb884a854d518489db7a
commit: 801c12513602572d32acfb884a854d518489db7a [1/1] apple-nvme: defer cache flushes by a specified amount
config: riscv-randconfig-r132-20260630 (https://download.01.org/0day-ci/archive/20260630/202606300825.ezsxC4CI-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 6cc609bb250b21b47fc7d394b4019101e9983597)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260630/202606300825.ezsxC4CI-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606300825.ezsxC4CI-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   WARNING: invalid argument to '-march': '_zacas_zabha'
>> drivers/nvme/host/apple.c:216:14: sparse: sparse: symbol 'flush_interval' was not declared. Should it be static?

vim +/flush_interval +216 drivers/nvme/host/apple.c

   215	
 > 216	unsigned int flush_interval = 1000;
   217	module_param(flush_interval, uint, 0644);
   218	MODULE_PARM_DESC(flush_interval, "Grace period in msecs between flushes");
   219	

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