dma-mapping: mark dma_supported static

Christoph Hellwig · Christoph Hellwig · commit 9fc18f6d56d5 · 2022-09-07T10:38:28.000+02:00
Now that the remaining users in drivers are gone, this function can be
marked static.

Signed-off-by: Christoph Hellwig &lt;hch@lst.de&gt;
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
@@ -139,7 +139,6 @@ int dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma,
 		void *cpu_addr, dma_addr_t dma_addr, size_t size,
 		unsigned long attrs);
 bool dma_can_mmap(struct device *dev);
-int dma_supported(struct device *dev, u64 mask);
 bool dma_pci_p2pdma_supported(struct device *dev);
 int dma_set_mask(struct device *dev, u64 mask);
 int dma_set_coherent_mask(struct device *dev, u64 mask);
@@ -248,10 +247,6 @@ static inline bool dma_can_mmap(struct device *dev)
 {
 	return false;
 }
-static inline int dma_supported(struct device *dev, u64 mask)
-{
-	return 0;
-}
 static inline bool dma_pci_p2pdma_supported(struct device *dev)
 {
 	return false;
diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c
@@ -707,7 +707,7 @@ int dma_mmap_noncontiguous(struct device *dev, struct vm_area_struct *vma,
 }
 EXPORT_SYMBOL_GPL(dma_mmap_noncontiguous);
 
-int dma_supported(struct device *dev, u64 mask)
+static int dma_supported(struct device *dev, u64 mask)
 {
 	const struct dma_map_ops *ops = get_dma_ops(dev);
 
@@ -721,7 +721,6 @@ int dma_supported(struct device *dev, u64 mask)
 		return 1;
 	return ops->dma_supported(dev, mask);
 }
-EXPORT_SYMBOL(dma_supported);
 
 bool dma_pci_p2pdma_supported(struct device *dev)
 {

Original file line number	Diff line number	Diff line change
`@@ -139,7 +139,6 @@ int dma_mmap_attrs(struct device dev, struct vm_area_struct vma,`
`139`	`139`	`void *cpu_addr, dma_addr_t dma_addr, size_t size,`
`140`	`140`	`unsigned long attrs);`
`141`	`141`	`bool dma_can_mmap(struct device *dev);`
`142`		`-int dma_supported(struct device *dev, u64 mask);`
`143`	`142`	`bool dma_pci_p2pdma_supported(struct device *dev);`
`144`	`143`	`int dma_set_mask(struct device *dev, u64 mask);`
`145`	`144`	`int dma_set_coherent_mask(struct device *dev, u64 mask);`
`@@ -248,10 +247,6 @@ static inline bool dma_can_mmap(struct device *dev)`
`248`	`247`	`{`
`249`	`248`	`return false;`
`250`	`249`	`}`
`251`		`-static inline int dma_supported(struct device *dev, u64 mask)`
`252`		`-{`
`253`		`- return 0;`
`254`		`-}`
`255`	`250`	`static inline bool dma_pci_p2pdma_supported(struct device *dev)`
`256`	`251`	`{`
`257`	`252`	`return false;`
Original file line number	Diff line number	Diff line change
`@@ -707,7 +707,7 @@ int dma_mmap_noncontiguous(struct device dev, struct vm_area_struct vma,`
`707`	`707`	`}`
`708`	`708`	`EXPORT_SYMBOL_GPL(dma_mmap_noncontiguous);`
`709`	`709`
`710`		`-int dma_supported(struct device *dev, u64 mask)`
	`710`	`+static int dma_supported(struct device *dev, u64 mask)`
`711`	`711`	`{`
`712`	`712`	`const struct dma_map_ops *ops = get_dma_ops(dev);`
`713`	`713`
`@@ -721,7 +721,6 @@ int dma_supported(struct device *dev, u64 mask)`
`721`	`721`	`return 1;`
`722`	`722`	`return ops->dma_supported(dev, mask);`
`723`	`723`	`}`
`724`		`-EXPORT_SYMBOL(dma_supported);`
`725`	`724`
`726`	`725`	`bool dma_pci_p2pdma_supported(struct device *dev)`
`727`	`726`	`{`