x86: move dma_supported and dma_set_mask to pci-dma_32.c

This is the way x86_64 does, so this make them equal. They have
to be extern now in the header, and the extern definition is moved to
the common dma-mapping.h header.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

3 files changed, 3 insertions, 33 deletions

diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 51a79d71dabd..c671a0aea59b 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -62,6 +62,9 @@ void dma_free_coherent(struct device *dev, size_t size,
                          void *vaddr, dma_addr_t dma_handle);
 
 
+extern int dma_supported(struct device *hwdev, u64 mask);
+extern int dma_set_mask(struct device *dev, u64 mask);
+
 #ifdef CONFIG_X86_32
 # include "dma-mapping_32.h"
 #else
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index e60c30a88311..fd7246dddad4 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -17,35 +17,6 @@ dma_mapping_error(dma_addr_t dma_addr)
 extern int forbid_dac;
 
 static inline int
-dma_supported(struct device *dev, u64 mask)
-{
-        /*
-         * we fall back to GFP_DMA when the mask isn't all 1s,
-         * so we can't guarantee allocations that must be
-         * within a tighter range than GFP_DMA..
-         */
-        if(mask < 0x00ffffff)
-                return 0;
-
-        /* Work around chipset bugs */
-        if (forbid_dac > 0 && mask > 0xffffffffULL)
-                return 0;
-
-        return 1;
-}
-
-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 int
 dma_get_cache_alignment(void)
 {
         /* no easy way to get cache size on all x86, so return the
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index b1bc6ca7613d..9674dac9fa3a 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -12,8 +12,6 @@ static inline int dma_mapping_error(dma_addr_t dma_addr)
         return (dma_addr == bad_dma_address);
 }
 
-extern int dma_supported(struct device *hwdev, u64 mask);
-
 /* same for gart, swiotlb, and nommu */
 static inline int dma_get_cache_alignment(void)
 {
@@ -22,8 +20,6 @@ static inline int dma_get_cache_alignment(void)
 
 #define dma_is_consistent(d, h) 1
 
-extern int dma_set_mask(struct device *dev, u64 mask);
-
 extern struct device fallback_dev;
 extern int panic_on_overflow;