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iommu/iova: Fix module config properly 

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@gmail.com>
Reported-by: John Garry <john.garry@huawei.com>
Fixes: 15bbdec393 ("iommu: Make the iova library a module")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/548c2f683ca379aface59639a8f0cccc3a1ac050.1663069227.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Robin Murphy 2022-09-13 12:47:20 +01:00 committed by Joerg Roedel
parent c7883f8d2b
commit 4f58330fcc
1 changed files with 1 additions and 1 deletions
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include/linux/iova.h
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@ -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);