[intel-gvt-linux:gvt-staging 2084/2117] drivers/gpu/drm/i915/i915_irq.c:3385:6: sparse: sparse: symbol 'i945gm_vblank_work_func' was not declared. Should it be static?

[kbuild test robot]

tree:   https://github.com/intel/gvt-linux gvt-staging
head:   77e8dd1d66120297a3b68c84e360844127d50542
commit: 08fa8fd0faa5716ed180e109a022e2c0f42c2e4a [2084/2117] drm/i915: Switch to per-crtc vblank vfuncs
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-rc1-7-g2b96cd8-dirty
        git checkout 08fa8fd0faa5716ed180e109a022e2c0f42c2e4a
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

>> drivers/gpu/drm/i915/i915_irq.c:3385:6: sparse: sparse: symbol 'i945gm_vblank_work_func' was not declared. Should it be static?

Please review and possibly fold the followup patch.

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