dma-mapping: consolidate dma_set_mask

Almost everyone implements dma_set_mask the same way, although some time
that's hidden in ->set_dma_mask methods.

This patch consolidates those into a common implementation that either
calls ->set_dma_mask if present or otherwise uses the default
implementation.  Some architectures used to only call ->set_dma_mask
after the initial checks, and those instance have been fixed to do the
full work.  h8300 implemented dma_set_mask bogusly as a no-ops and has
been fixed.

Unfortunately some architectures overload unrelated semantics like changing
the dma_ops into it so we still need to allow for an architecture override
for now.

[jcmvbkbc@gmail.com: fix xtensa]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/alpha/include/asm/dma-mapping.h b/arch/alpha/include/asm/dma-mapping.h
index 9d763e535c5a2e4b35b4b337297da8dd1afb0a5f..72a8ca7796d91a2d2a92d696ce507650678c3998 100644 (file)
--- a/arch/alpha/include/asm/dma-mapping.h
+++ b/arch/alpha/include/asm/dma-mapping.h
@@ -12,11 +12,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 
 #include <asm-generic/dma-mapping-common.h>
 
-static inline int dma_set_mask(struct device *dev, u64 mask)
-{
-       return get_dma_ops(dev)->set_dma_mask(dev, mask);
-}
-
 #define dma_cache_sync(dev, va, size, dir)               ((void)0)
 
 #endif /* _ALPHA_DMA_MAPPING_H */

diff --git a/arch/alpha/kernel/pci-noop.c b/arch/alpha/kernel/pci-noop.c
index df24b76f92461a5df780059eea1488e3b50945e7..2b1f4a1e92723bf67450c3d3ba4006e792971c70 100644 (file)
--- a/arch/alpha/kernel/pci-noop.c
+++ b/arch/alpha/kernel/pci-noop.c
@@ -166,15 +166,6 @@ static int alpha_noop_supported(struct device *dev, u64 mask)
        return mask < 0x00ffffffUL ? 0 : 1;
 }
 
-static int alpha_noop_set_mask(struct device *dev, u64 mask)
-{
-       if (!dev->dma_mask || !dma_supported(dev, mask))
-               return -EIO;
-
-       *dev->dma_mask = mask;
-       return 0;
-}
-
 struct dma_map_ops alpha_noop_ops = {
        .alloc                  = alpha_noop_alloc_coherent,
        .free                   = alpha_noop_free_coherent,
@@ -182,7 +173,6 @@ struct dma_map_ops alpha_noop_ops = {
        .map_sg                 = alpha_noop_map_sg,
        .mapping_error          = alpha_noop_mapping_error,
        .dma_supported          = alpha_noop_supported,
-       .set_dma_mask           = alpha_noop_set_mask,
 };
 
 struct dma_map_ops *dma_ops = &alpha_noop_ops;

diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c
index eddee77203431fb9d50d7c0feb313f26d5985d8e..8969bf2dfe3a0d4ff797888d2ce0a4a8785103dc 100644 (file)
--- a/arch/alpha/kernel/pci_iommu.c
+++ b/arch/alpha/kernel/pci_iommu.c
@@ -939,16 +939,6 @@ static int alpha_pci_mapping_error(struct device *dev, dma_addr_t dma_addr)
        return dma_addr == 0;
 }
 
-static int alpha_pci_set_mask(struct device *dev, u64 mask)
-{
-       if (!dev->dma_mask ||
-           !pci_dma_supported(alpha_gendev_to_pci(dev), mask))
-               return -EIO;
-
-       *dev->dma_mask = mask;
-       return 0;
-}
-
 struct dma_map_ops alpha_pci_ops = {
        .alloc                  = alpha_pci_alloc_coherent,
        .free                   = alpha_pci_free_coherent,
@@ -958,7 +948,6 @@ struct dma_map_ops alpha_pci_ops = {
        .unmap_sg               = alpha_pci_unmap_sg,
        .mapping_error          = alpha_pci_mapping_error,
        .dma_supported          = alpha_pci_supported,
-       .set_dma_mask           = alpha_pci_set_mask,
 };
 
 struct dma_map_ops *dma_ops = &alpha_pci_ops;

diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index 2f9c731691c0f20da789721f78e082cd8c7b8304..ccb3aa64640dc350da9de1319d65b2a46c44e2ee 100644 (file)
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -48,11 +48,6 @@ extern int dma_supported(struct device *dev, u64 mask);
  */
 #include <asm-generic/dma-mapping-common.h>
 
-static inline int dma_set_mask(struct device *dev, u64 mask)
-{
-       return get_dma_ops(dev)->set_dma_mask(dev, mask);
-}
-
 #ifdef __arch_page_to_dma
 #error Please update to __arch_pfn_to_dma
 #endif

diff --git a/arch/arm64/include/asm/dma-mapping.h b/arch/arm64/include/asm/dma-mapping.h
index f519a58c55ae0c7fdd2ba3d1d5c7fbfc0d01c419..cfdb34bedbcd8adeb0a6f012a02459042726030b 100644 (file)
--- a/arch/arm64/include/asm/dma-mapping.h
+++ b/arch/arm64/include/asm/dma-mapping.h
@@ -84,15 +84,6 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr)
        return (phys_addr_t)dev_addr;
 }
 
-static inline int dma_set_mask(struct device *dev, u64 mask)
-{
-       if (!dev->dma_mask || !dma_supported(dev, mask))
-               return -EIO;
-       *dev->dma_mask = mask;
-
-       return 0;
-}
-
 static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
 {
        if (!dev->dma_mask)

diff --git a/arch/h8300/include/asm/dma-mapping.h b/arch/h8300/include/asm/dma-mapping.h
index 48d652eb1b5f57aa8eeebe9c5b506c407ab9b86e..d9b5b806afe6fcecfaf6c727c1a09310ed8867a1 100644 (file)
--- a/arch/h8300/include/asm/dma-mapping.h
+++ b/arch/h8300/include/asm/dma-mapping.h
@@ -10,9 +10,4 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 
 #include <asm-generic/dma-mapping-common.h>
 
-static inline int dma_set_mask(struct device *dev, u64 mask)
-{
-       return 0;
-}
-
 #endif

diff --git a/arch/hexagon/include/asm/dma-mapping.h b/arch/hexagon/include/asm/dma-mapping.h
index 36e8de710b3251e4cb876b3ab6761378568e9c59..268fde8a45756e580ef06da3a2b051c4fb2e9f58 100644 (file)
--- a/arch/hexagon/include/asm/dma-mapping.h
+++ b/arch/hexagon/include/asm/dma-mapping.h
@@ -45,7 +45,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 
 #define HAVE_ARCH_DMA_SUPPORTED 1
 extern int dma_supported(struct device *dev, u64 mask);
-extern int dma_set_mask(struct device *dev, u64 mask);
 extern int dma_is_consistent(struct device *dev, dma_addr_t dma_handle);
 extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
                           enum dma_data_direction direction);

diff --git a/arch/hexagon/kernel/dma.c b/arch/hexagon/kernel/dma.c
index b74f9bae31a3b9e81204d3c86b51acd3dcfe65c6..9e3ddf792bd3e00afc44afc567e52cf290b8c54f 100644 (file)
--- a/arch/hexagon/kernel/dma.c
+++ b/arch/hexagon/kernel/dma.c
@@ -44,17 +44,6 @@ int dma_supported(struct device *dev, u64 mask)
 }
 EXPORT_SYMBOL(dma_supported);
 
-int dma_set_mask(struct device *dev, u64 mask)
-{
-       if (!dev->dma_mask || !dma_supported(dev, mask))
-               return -EIO;
-
-       *dev->dma_mask = mask;
-
-       return 0;
-}
-EXPORT_SYMBOL(dma_set_mask);
-
 static struct gen_pool *coherent_pool;
 
 

diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h
index 7982caa7c5e766b3cbbb83841cd1c978eff54b3c..9beccf8010bd6bf8eaa64ab292a753449a0ca609 100644 (file)
--- a/arch/ia64/include/asm/dma-mapping.h
+++ b/arch/ia64/include/asm/dma-mapping.h
@@ -27,15 +27,6 @@ extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int,
 
 #include <asm-generic/dma-mapping-common.h>
 
-static inline int
-dma_set_mask (struct device *dev, u64 mask)
-{
-       if (!dev->dma_mask || !dma_supported(dev, mask))
-               return -EIO;
-       *dev->dma_mask = mask;
-       return 0;
-}
-
 static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
 {
        if (!dev->dma_mask)

diff --git a/arch/microblaze/include/asm/dma-mapping.h b/arch/microblaze/include/asm/dma-mapping.h
index 3b453c503a43b8d25f2aaabe888caa680f78e2e2..24b12970c9cff772d24d8b581aeb945b8d917b6b 100644 (file)
--- a/arch/microblaze/include/asm/dma-mapping.h
+++ b/arch/microblaze/include/asm/dma-mapping.h
@@ -46,20 +46,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 
 #include <asm-generic/dma-mapping-common.h>
 
-static inline int dma_set_mask(struct device *dev, u64 dma_mask)
-{
-       struct dma_map_ops *ops = get_dma_ops(dev);
-
-       if (unlikely(ops == NULL))
-               return -EIO;
-       if (ops->set_dma_mask)
-               return ops->set_dma_mask(dev, dma_mask);
-       if (!dev->dma_mask || !dma_supported(dev, dma_mask))
-               return -EIO;
-       *dev->dma_mask = dma_mask;
-       return 0;
-}
-
 static inline void __dma_sync(unsigned long paddr,
                              size_t size, enum dma_data_direction direction)
 {

diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h
index 8bf8ec30a4b2d487042c57c2c56ae2eac1ee8352..e604f760c4a076b44255b312b6f45180f06200c4 100644 (file)
--- a/arch/mips/include/asm/dma-mapping.h
+++ b/arch/mips/include/asm/dma-mapping.h
@@ -31,22 +31,6 @@ static inline void dma_mark_clean(void *addr, size_t size) {}
 
 #include <asm-generic/dma-mapping-common.h>
 
-static inline int
-dma_set_mask(struct device *dev, u64 mask)
-{
-       struct dma_map_ops *ops = get_dma_ops(dev);
-
-       if(!dev->dma_mask || !dma_supported(dev, mask))
-               return -EIO;
-
-       if (ops->set_dma_mask)
-               return ops->set_dma_mask(dev, mask);
-
-       *dev->dma_mask = mask;
-
-       return 0;
-}
-
 extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
               enum dma_data_direction direction);
 

diff --git a/arch/mips/loongson64/common/dma-swiotlb.c b/arch/mips/loongson64/common/dma-swiotlb.c
index ef9da3b5c543f33e300995ba9c5e908d0fc55d37..4ffa6fc81c8f78acaf24ae15849ee475a814d37a 100644 (file)
--- a/arch/mips/loongson64/common/dma-swiotlb.c
+++ b/arch/mips/loongson64/common/dma-swiotlb.c
@@ -85,6 +85,9 @@ static void loongson_dma_sync_sg_for_device(struct device *dev,
 
 static int loongson_dma_set_mask(struct device *dev, u64 mask)
 {
+       if (!dev->dma_mask || !dma_supported(dev, mask))
+               return -EIO;
+
        if (mask > DMA_BIT_MASK(loongson_sysconf.dma_mask_bits)) {
                *dev->dma_mask = DMA_BIT_MASK(loongson_sysconf.dma_mask_bits);
                return -EIO;

diff --git a/arch/openrisc/include/asm/dma-mapping.h b/arch/openrisc/include/asm/dma-mapping.h
index 8fc08b883477a37cb6f53bb890b1793ee30c69ef..413bfcf863848fba556078d8ad6ea1cba59cf770 100644 (file)
--- a/arch/openrisc/include/asm/dma-mapping.h
+++ b/arch/openrisc/include/asm/dma-mapping.h
@@ -44,13 +44,4 @@ static inline int dma_supported(struct device *dev, u64 dma_mask)
 
 #include <asm-generic/dma-mapping-common.h>
 
-static inline int dma_set_mask(struct device *dev, u64 dma_mask)
-{
-       if (!dev->dma_mask || !dma_supported(dev, dma_mask))
-               return -EIO;
-
-       *dev->dma_mask = dma_mask;
-
-       return 0;
-}
 #endif /* __ASM_OPENRISC_DMA_MAPPING_H */

diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h
index dd43e0c6f2190ac410c0fa15728a0ae5068b90c2..7f522c021dc3087af2393b40e603a054f992952b 100644 (file)
--- a/arch/powerpc/include/asm/dma-mapping.h
+++ b/arch/powerpc/include/asm/dma-mapping.h
@@ -122,9 +122,11 @@ static inline void set_dma_offset(struct device *dev, dma_addr_t off)
 /* this will be removed soon */
 #define flush_write_buffers()
 
+#define HAVE_ARCH_DMA_SET_MASK 1
+extern int dma_set_mask(struct device *dev, u64 dma_mask);
+
 #include <asm-generic/dma-mapping-common.h>
 
-extern int dma_set_mask(struct device *dev, u64 dma_mask);
 extern int __dma_set_mask(struct device *dev, u64 dma_mask);
 extern u64 __dma_get_required_mask(struct device *dev);
 

diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h
index 1f42489797da2aeffc5eb9152f40b565996cd2cd..b3fd54d93dd20f85147c9e1e884e08e7358ec914 100644 (file)
--- a/arch/s390/include/asm/dma-mapping.h
+++ b/arch/s390/include/asm/dma-mapping.h
@@ -18,8 +18,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
        return &s390_dma_ops;
 }
 
-extern int dma_set_mask(struct device *dev, u64 mask);
-
 static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
                                  enum dma_data_direction direction)
 {

diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c
index 42b76580c8b8a6fa155da58f106d83096089389b..37505b8b4093782bae7e7062e39ea8e8fa50dbc7 100644 (file)
--- a/arch/s390/pci/pci_dma.c
+++ b/arch/s390/pci/pci_dma.c
@@ -262,16 +262,6 @@ out:
        spin_unlock_irqrestore(&zdev->iommu_bitmap_lock, flags);
 }
 
-int dma_set_mask(struct device *dev, u64 mask)
-{
-       if (!dev->dma_mask || !dma_supported(dev, mask))
-               return -EIO;
-
-       *dev->dma_mask = mask;
-       return 0;
-}
-EXPORT_SYMBOL_GPL(dma_set_mask);
-
 static dma_addr_t s390_dma_map_pages(struct device *dev, struct page *page,
                                     unsigned long offset, size_t size,
                                     enum dma_data_direction direction,

diff --git a/arch/sh/include/asm/dma-mapping.h b/arch/sh/include/asm/dma-mapping.h
index 088f6e5f1a927caabe43f515fd92e6fd28e6726a..a3745a3fe0290896a2a14450e6e47e8caf30a793 100644 (file)
--- a/arch/sh/include/asm/dma-mapping.h
+++ b/arch/sh/include/asm/dma-mapping.h
@@ -13,20 +13,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 
 #include <asm-generic/dma-mapping-common.h>
 
-static inline int dma_set_mask(struct device *dev, u64 mask)
-{
-       struct dma_map_ops *ops = get_dma_ops(dev);
-
-       if (!dev->dma_mask || !dma_supported(dev, mask))
-               return -EIO;
-       if (ops->set_dma_mask)
-               return ops->set_dma_mask(dev, mask);
-
-       *dev->dma_mask = mask;
-
-       return 0;
-}
-
 void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
                    enum dma_data_direction dir);
 

diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h
index 184651bb0b46a3a9799a5aef17e82107473acc52..a21da597b0b59d49cce2f5fcca68a4274bccbfc6 100644 (file)
--- a/arch/sparc/include/asm/dma-mapping.h
+++ b/arch/sparc/include/asm/dma-mapping.h
@@ -37,7 +37,7 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
        return dma_ops;
 }
 
-#include <asm-generic/dma-mapping-common.h>
+#define HAVE_ARCH_DMA_SET_MASK 1
 
 static inline int dma_set_mask(struct device *dev, u64 mask)
 {
@@ -52,4 +52,6 @@ static inline int dma_set_mask(struct device *dev, u64 mask)
        return -EINVAL;
 }
 
+#include <asm-generic/dma-mapping-common.h>
+
 #endif

diff --git a/arch/tile/include/asm/dma-mapping.h b/arch/tile/include/asm/dma-mapping.h
index 559ed4a60077bc27e18fe859a6bb40ea872eeeb9..96ac6cce4a32c03ead94166ac1190b91ac5b032d 100644 (file)
--- a/arch/tile/include/asm/dma-mapping.h
+++ b/arch/tile/include/asm/dma-mapping.h
@@ -59,8 +59,6 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
 
 static inline void dma_mark_clean(void *addr, size_t size) {}
 
-#include <asm-generic/dma-mapping-common.h>
-
 static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops)
 {
        dev->archdata.dma_ops = ops;
@@ -74,6 +72,10 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
        return addr + size - 1 <= *dev->dma_mask;
 }
 
+#define HAVE_ARCH_DMA_SET_MASK 1
+
+#include <asm-generic/dma-mapping-common.h>
+
 static inline int
 dma_set_mask(struct device *dev, u64 mask)
 {

diff --git a/arch/unicore32/include/asm/dma-mapping.h b/arch/unicore32/include/asm/dma-mapping.h
index 21231c14182c671899bd0daa54fd260ebcca03ec..8140e053ccd351332f33d3df8decccfdeb86074b 100644 (file)
--- a/arch/unicore32/include/asm/dma-mapping.h
+++ b/arch/unicore32/include/asm/dma-mapping.h
@@ -50,16 +50,6 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
 
 static inline void dma_mark_clean(void *addr, size_t size) {}
 
-static inline int dma_set_mask(struct device *dev, u64 dma_mask)
-{
-       if (!dev->dma_mask || !dma_supported(dev, dma_mask))
-               return -EIO;
-
-       *dev->dma_mask = dma_mask;
-
-       return 0;
-}
-
 static inline void dma_cache_sync(struct device *dev, void *vaddr,
                size_t size, enum dma_data_direction direction)
 {

diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h
index b1fbf582048b40dd653d7be3d522aaf1a3666463..953b7263f84466f463d416814be709d22971c701 100644 (file)
--- a/arch/x86/include/asm/dma-mapping.h
+++ b/arch/x86/include/asm/dma-mapping.h
@@ -48,8 +48,6 @@ extern int dma_supported(struct device *hwdev, u64 mask);
 
 #include <asm-generic/dma-mapping-common.h>
 
-extern int dma_set_mask(struct device *dev, u64 mask);
-
 extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
                                        dma_addr_t *dma_addr, gfp_t flag,
                                        struct dma_attrs *attrs);

diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index bd23971e8f1df80556229710d9e55ad1e10287a4..84b8ef82a159bc7756914b40518d7fa00ed968ff 100644 (file)
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -58,17 +58,6 @@ EXPORT_SYMBOL(x86_dma_fallback_dev);
 /* Number of entries preallocated for DMA-API debugging */
 #define PREALLOC_DMA_DEBUG_ENTRIES       65536
 
-int dma_set_mask(struct device *dev, u64 mask)
-{
-       if (!dev->dma_mask || !dma_supported(dev, mask))
-               return -EIO;
-
-       *dev->dma_mask = mask;
-
-       return 0;
-}
-EXPORT_SYMBOL(dma_set_mask);
-
 void __init pci_iommu_alloc(void)
 {
        struct iommu_table_entry *p;

diff --git a/arch/xtensa/include/asm/dma-mapping.h b/arch/xtensa/include/asm/dma-mapping.h
index 329abc7211e99b1e199bf6b74a569c43d0ab6ff7..4427f38b634e62a90b629fc11d68b25d70c34ba6 100644 (file)
--- a/arch/xtensa/include/asm/dma-mapping.h
+++ b/arch/xtensa/include/asm/dma-mapping.h
@@ -32,17 +32,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 
 #include <asm-generic/dma-mapping-common.h>
 
-static inline int
-dma_set_mask(struct device *dev, u64 mask)
-{
-       if(!dev->dma_mask || !dma_supported(dev, mask))
-               return -EIO;
-
-       *dev->dma_mask = mask;
-
-       return 0;
-}
-
 void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
                    enum dma_data_direction direction);
 

diff --git a/include/asm-generic/dma-mapping-common.h b/include/asm-generic/dma-mapping-common.h
index 67fa6bcd644ce06062ab7bd425d96fc3208d73de..b1bc954eccf37438213d6744fe69ff1bc4d71365 100644 (file)
--- a/include/asm-generic/dma-mapping-common.h
+++ b/include/asm-generic/dma-mapping-common.h
@@ -340,4 +340,19 @@ static inline int dma_supported(struct device *dev, u64 mask)
 }
 #endif
 
+#ifndef HAVE_ARCH_DMA_SET_MASK
+static inline int dma_set_mask(struct device *dev, u64 mask)
+{
+       struct dma_map_ops *ops = get_dma_ops(dev);
+
+       if (ops->set_dma_mask)
+               return ops->set_dma_mask(dev, mask);
+
+       if (!dev->dma_mask || !dma_supported(dev, mask))
+               return -EIO;
+       *dev->dma_mask = mask;
+       return 0;
+}
+#endif
+
 #endif