diff --git a/arch/alpha/include/asm/dma-mapping.h b/arch/alpha/include/asm/dma-mapping.h
index 0ee6a5c99b16..6ce7e2041685 100644
--- a/arch/alpha/include/asm/dma-mapping.h
+++ b/arch/alpha/include/asm/dma-mapping.h
@@ -4,7 +4,7 @@
 
 extern const struct dma_map_ops alpha_pci_ops;
 
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
+static inline const struct dma_map_ops *get_arch_dma_ops(void)
 {
 #ifdef CONFIG_ALPHA_JENSEN
 	return NULL;
diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h
index a5d9d788eede..af6fa8e1597c 100644
--- a/arch/ia64/include/asm/dma-mapping.h
+++ b/arch/ia64/include/asm/dma-mapping.h
@@ -8,7 +8,7 @@
  */
 extern const struct dma_map_ops *dma_ops;
 
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
+static inline const struct dma_map_ops *get_arch_dma_ops(void)
 {
 	return dma_ops;
 }
diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h
index 34de7b17b41b..0fee561ac796 100644
--- a/arch/mips/include/asm/dma-mapping.h
+++ b/arch/mips/include/asm/dma-mapping.h
@@ -6,7 +6,7 @@
 
 extern const struct dma_map_ops jazz_dma_ops;
 
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
+static inline const struct dma_map_ops *get_arch_dma_ops(void)
 {
 #if defined(CONFIG_MACH_JAZZ)
 	return &jazz_dma_ops;
diff --git a/arch/parisc/include/asm/dma-mapping.h b/arch/parisc/include/asm/dma-mapping.h
index d5bd94247371..635665004fe6 100644
--- a/arch/parisc/include/asm/dma-mapping.h
+++ b/arch/parisc/include/asm/dma-mapping.h
@@ -21,7 +21,7 @@
 
 extern const struct dma_map_ops *hppa_dma_ops;
 
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
+static inline const struct dma_map_ops *get_arch_dma_ops(void)
 {
 	return hppa_dma_ops;
 }
diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h
index 2f051343612e..55c12fc2ba63 100644
--- a/arch/sparc/include/asm/dma-mapping.h
+++ b/arch/sparc/include/asm/dma-mapping.h
@@ -4,7 +4,7 @@
 
 extern const struct dma_map_ops *dma_ops;
 
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
+static inline const struct dma_map_ops *get_arch_dma_ops(void)
 {
 	/* sparc32 uses per-device dma_ops */
 	return IS_ENABLED(CONFIG_SPARC64) ? dma_ops : NULL;
diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h
index 1c66708e3062..d1dac96ee30b 100644
--- a/arch/x86/include/asm/dma-mapping.h
+++ b/arch/x86/include/asm/dma-mapping.h
@@ -4,7 +4,7 @@
 
 extern const struct dma_map_ops *dma_ops;
 
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
+static inline const struct dma_map_ops *get_arch_dma_ops(void)
 {
 	return dma_ops;
 }
diff --git a/include/asm-generic/dma-mapping.h b/include/asm-generic/dma-mapping.h
index c13f46109e88..46a0016efd81 100644
--- a/include/asm-generic/dma-mapping.h
+++ b/include/asm-generic/dma-mapping.h
@@ -2,7 +2,7 @@
 #ifndef _ASM_GENERIC_DMA_MAPPING_H
 #define _ASM_GENERIC_DMA_MAPPING_H
 
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
+static inline const struct dma_map_ops *get_arch_dma_ops(void)
 {
 	return NULL;
 }
diff --git a/include/linux/dma-map-ops.h b/include/linux/dma-map-ops.h
index d678afeb8a13..41bf4bdb117a 100644
--- a/include/linux/dma-map-ops.h
+++ b/include/linux/dma-map-ops.h
@@ -90,7 +90,7 @@ static inline const struct dma_map_ops *get_dma_ops(struct device *dev)
 {
 	if (dev->dma_ops)
 		return dev->dma_ops;
-	return get_arch_dma_ops(dev->bus);
+	return get_arch_dma_ops();
 }
 
 static inline void set_dma_ops(struct device *dev,