[linux-next:master 4470/4908] drivers/iommu/iommu.c:1857:5: sparse: sparse: symbol '__iommu_map' was not declared. Should it be static?

[linux-next:master 4470/4908] drivers/iommu/iommu.c:1857:5: sparse: sparse: symbol '__iommu_map' was not declared. Should it be static?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   78662bffde37ccbb66ac3311fa709d8960435e98
commit: 781ca2de89bae1b1d2c96df9ef33e9a324415995 [4470/4908] iommu: Add gfp parameter to iommu_ops::map
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-dirty
        git checkout 781ca2de89bae1b1d2c96df9ef33e9a324415995
        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@intel.com>


sparse warnings: (new ones prefixed by >>)

   drivers/iommu/iommu.c:292:5: sparse: sparse: symbol 'iommu_insert_resv_region' was not declared. Should it be static?

Please review and possibly fold the followup patch.

---
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[RFC PATCH linux-next] iommu: Add gfp parameter to iommu_ops:: __iommu_map() can be static

[kbuild test robot]

Fixes: 781ca2de89ba ("iommu: Add gfp parameter to iommu_ops::map")
Signed-off-by: kbuild test robot <lkp@intel.com>
---
 iommu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index f8853dbf1c4eb..89bfdbbfaa11b 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1854,7 +1854,7 @@ static size_t iommu_pgsize(struct iommu_domain *domain,
 	return pgsize;
 }
 
-int __iommu_map(struct iommu_domain *domain, unsigned long iova,
+static int __iommu_map(struct iommu_domain *domain, unsigned long iova,
 	      phys_addr_t paddr, size_t size, int prot, gfp_t gfp)
 {
 	const struct iommu_ops *ops = domain->ops;
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