This function is potentially dangerous: nothing protects returned iova.
As there is no user in tree anymore, delete it.
Cc: David Woodhouse <dw...@infradead.org>
Cc: Joerg Roedel <j...@8bytes.org>
Cc: iommu@lists.linux-foundation.org
Cc: Dmitry Safonov <0x7f454...@gmail.com>
Signed-off-by: Dmitry Safonov <d...@arista.com>
---
drivers/iommu/iova.c | 20 --------------------
include/linux/iova.h | 7 -------
2 files changed, 27 deletions(-)
diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c
index 4c63d92afaf7..4a568e28a633 100644
--- a/drivers/iommu/iova.c
+++ b/drivers/iommu/iova.c
@@ -336,26 +336,6 @@ static void private_free_iova(struct iova_domain *iovad,
struct iova *iova)
}
/**
- * find_iova - finds an iova for a given pfn
- * @iovad: - iova domain in question.
- * @pfn: - page frame number
- * This function finds and returns an iova belonging to the
- * given doamin which matches the given pfn.
- */
-struct iova *find_iova(struct iova_domain *iovad, unsigned long pfn)
-{
- unsigned long flags;
- struct iova *iova;
-
- /* Take the lock so that no other thread is manipulating the rbtree */
- spin_lock_irqsave(&iovad->iova_rbtree_lock, flags);
- iova = private_find_iova(iovad, pfn);
- spin_unlock_irqrestore(&iovad->iova_rbtree_lock, flags);
- return iova;
-}
-EXPORT_SYMBOL_GPL(find_iova);
-
-/**
* __free_iova - frees the given iova
* @iovad: iova domain in question.
* @iova: iova in question.
diff --git a/include/linux/iova.h b/include/linux/iova.h
index 803472b77919..006911306a84 100644
--- a/include/linux/iova.h
+++ b/include/linux/iova.h
@@ -158,7 +158,6 @@ void init_iova_domain(struct iova_domain *iovad, unsigned
long granule,
unsigned long start_pfn);
int init_iova_flush_queue(struct iova_domain *iovad,
iova_flush_cb flush_cb, iova_entry_dtor entry_dtor);
-struct iova *find_iova(struct iova_domain *iovad, unsigned long pfn);
void put_iova_domain(struct iova_domain *iovad);
struct iova *iova_split_and_pop(struct iova_domain *iovad,
unsigned long pfn_lo, unsigned long pfn_hi);
@@ -243,12 +242,6 @@ static inline int init_iova_flush_queue(struct iova_domain
*iovad,
return -ENODEV;
}
-static inline struct iova *find_iova(struct iova_domain *iovad,
- unsigned long pfn)
-{
- return NULL;
-}
-
static inline void put_iova_domain(struct iova_domain *iovad)
{
}
--
2.13.6
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