[PATCH 2/6] ARM/dma-mapping: remove dma_to_virt

Christoph Hellwig
2020-09-14T07:40:32Z

dma_to_virt is entirely unused, remove it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
arch/arm/include/asm/dma-mapping.h | 18 +-----------------
arch/arm/mach-omap1/include/mach/memory.h | 4 ----
2 files changed, 1 insertion(+), 21 deletions(-)

diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index 70d95677656044..cf2535fb8891f5 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -24,7 +24,7 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
}

/*
- * dma_to_pfn/pfn_to_dma/dma_to_virt/virt_to_dma are architecture private
+ * dma_to_pfn/pfn_to_dma/virt_to_dma are architecture private
* functions used internally by the DMA-mapping API to provide DMA
* addresses. They must not be used by drivers.
*/
@@ -46,17 +46,6 @@ static inline unsigned long dma_to_pfn(struct device *dev, dma_addr_t addr)
return pfn;
}

-static inline void *dma_to_virt(struct device *dev, dma_addr_t addr)
-{
- if (dev) {
- unsigned long pfn = dma_to_pfn(dev, addr);
-
- return phys_to_virt(__pfn_to_phys(pfn));
- }
-
- return (void *)__bus_to_virt((unsigned long)addr);
-}
-
static inline dma_addr_t virt_to_dma(struct device *dev, void *addr)
{
if (dev)
@@ -76,11 +65,6 @@ static inline unsigned long dma_to_pfn(struct device *dev, dma_addr_t addr)
return __arch_dma_to_pfn(dev, addr);
}

-static inline void *dma_to_virt(struct device *dev, dma_addr_t addr)
-{
- return __arch_dma_to_virt(dev, addr);
-}
-
static inline dma_addr_t virt_to_dma(struct device *dev, void *addr)
{
return __arch_virt_to_dma(dev, addr);
diff --git a/arch/arm/mach-omap1/include/mach/memory.h b/arch/arm/mach-omap1/include/mach/memory.h
index 1142560e0078f5..e43697c3297bf2 100644
--- a/arch/arm/mach-omap1/include/mach/memory.h
+++ b/arch/arm/mach-omap1/include/mach/memory.h
@@ -41,10 +41,6 @@
__phys_to_pfn(__dma); \
})

-#define __arch_dma_to_virt(dev, addr) ({ (void *) (is_lbus_device(dev) ? \
- lbus_to_virt(addr) : \
- __phys_to_virt(addr)); })
-
#define __arch_virt_to_dma(dev, addr) ({ unsigned long __addr = (unsigned long)(addr); \
(dma_addr_t) (is_lbus_device(dev) ? \
virt_to_lbus(__addr) : \
--
2.28.0