[drm-intel:drm-intel-nightly 357/550] drivers/gpu/drm/radeon/cik_sdma.c:293:6: sparse: symbol 'cik_sdma_ctx_switch_enable' was not declared. Should it be static?

[kbuild test robot]

tree:   git://anongit.freedesktop.org/drm-intel drm-intel-nightly
head:   0e3c37cedf582819b6dbdd0bf0b14a15d3c2e47d
commit: d7a60d8ea5cd4560e0496d2683643d2e4930e609 [357/550] drm/radeon: Enable sdma preemption
reproduce:
  # apt-get install sparse
  git checkout d7a60d8ea5cd4560e0496d2683643d2e4930e609
  make ARCH=x86_64 allmodconfig
  make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

>> drivers/gpu/drm/radeon/cik_sdma.c:293:6: sparse: symbol 'cik_sdma_ctx_switch_enable' was not declared. Should it be static?
   drivers/gpu/drm/radeon/cik_sdma.c:471:48: sparse: cast to restricted __le32
   drivers/gpu/drm/radeon/cik_sdma.c:472:27: sparse: cast to restricted __le32
   drivers/gpu/drm/radeon/cik_sdma.c:480:48: sparse: cast to restricted __le32
   drivers/gpu/drm/radeon/cik_sdma.c:481:27: sparse: cast to restricted __le32
   drivers/gpu/drm/radeon/cik_sdma.c:651:30: sparse: incorrect type in assignment (different base types)
   drivers/gpu/drm/radeon/cik_sdma.c:651:30:    expected unsigned int volatile [unsigned] [usertype] <noident>
   drivers/gpu/drm/radeon/cik_sdma.c:651:30:    got restricted __le32 [usertype] <noident>
   drivers/gpu/drm/radeon/cik_sdma.c:666:23: sparse: cast to restricted __le32
   drivers/gpu/drm/radeon/cik_sdma.c:708:30: sparse: incorrect type in assignment (different base types)
   drivers/gpu/drm/radeon/cik_sdma.c:708:30:    expected unsigned int volatile [unsigned] [usertype] <noident>
   drivers/gpu/drm/radeon/cik_sdma.c:708:30:    got restricted __le32 [usertype] <noident>
   drivers/gpu/drm/radeon/cik_sdma.c:735:23: sparse: cast to restricted __le32

Please review and possibly fold the followup patch.

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