[PATCH v2 02/60][SRU][OEM-5.6] iommu: Define dev_iommu_fwspec_get() for !CONFIG_IOMMU_API

[You-Sheng Yang]

From: Joerg Roedel <jroedel at suse.de>

BugLink: https://bugs.launchpad.net/bugs/1876707

There are users outside of the IOMMU code that need to call that
function. Define it for !CONFIG_IOMMU_API too so that compilation does
not break.

Reported-by: kbuild test robot <lkp at intel.com>
Signed-off-by: Joerg Roedel <jroedel at suse.de>
Reviewed-by: Jean-Philippe Brucker <jean-philippe at linaro.org>
Link: https://lore.kernel.org/r/20200326150841.10083-2-joro@8bytes.org
(cherry picked from commit 0008d0c3b1ab03b046b04b7bd9d70df1e2fffbfc)
Signed-off-by: You-Sheng Yang <vicamo.yang at canonical.com>
---
 include/linux/iommu.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 4d1ba76c9a64..505163e9702a 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -1073,6 +1073,10 @@ static inline int iommu_sva_unbind_gpasid(struct iommu_domain *domain,
 	return -ENODEV;
 }
 
+static inline struct iommu_fwspec *dev_iommu_fwspec_get(struct device *dev)
+{
+	return NULL;
+}
 #endif /* CONFIG_IOMMU_API */
 
 #ifdef CONFIG_IOMMU_DEBUGFS
-- 
2.25.1