From: Robin Murphy <robin.murphy@xxxxxxx>
[ Upstream commit 4f58330fcc8482aa90674e1f40f601e82f18ed4a ]
IOMMU_IOVA is intended to be an optional library for users to select as
and when they desire. Since it can be a module now, this means that
built-in code which has chosen not to select it should not fail to link
if it happens to have selected as a module by someone else. Replace
IS_ENABLED() with IS_REACHABLE() to do the right thing.
CC: Thierry Reding <thierry.reding@xxxxxxxxx>
Reported-by: John Garry <john.garry@xxxxxxxxxx>
Fixes: 15bbdec3931e ("iommu: Make the iova library a module")
Signed-off-by: Robin Murphy <robin.murphy@xxxxxxx>
Reviewed-by: Thierry Reding <treding@xxxxxxxxxx>
Link: https://lore.kernel.org/r/548c2f683ca379aface59639a8f0cccc3a1ac050.1663069227.git.robin.murphy@xxxxxxx
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
include/linux/iova.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/iova.h b/include/linux/iova.h
index c6ba6d95d79c..83c00fac2acb 100644
--- a/include/linux/iova.h
+++ b/include/linux/iova.h
@@ -75,7 +75,7 @@ static inline unsigned long iova_pfn(struct iova_domain *iovad, dma_addr_t iova)
return iova >> iova_shift(iovad);
}
-#if IS_ENABLED(CONFIG_IOMMU_IOVA)
+#if IS_REACHABLE(CONFIG_IOMMU_IOVA)
int iova_cache_get(void);
void iova_cache_put(void);
--
2.35.1
