The patch titled
Subject: dma-mapping: cosolidate dma_mapping_error
has been added to the -mm tree. Its filename is
dma-mapping-cosolidate-dma_mapping_error.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/dma-mapping-cosolidate-dma_mapping_error.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/dma-mapping-cosolidate-dma_mapping_error.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Christoph Hellwig <hch@xxxxxx>
Subject: dma-mapping: cosolidate dma_mapping_error
Currently there are three valid implementations of dma_mapping_error:
(1) call ->mapping_error
(2) check for a hardcoded error code
(3) always return 0
This patch provides a common implementation that calls ->mapping_error
if present, then checks for DMA_ERROR_CODE if defined or otherwise
returns 0.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Cc: Michal Simek <monstr@xxxxxxxxx>
Cc: Jonas Bonn <jonas@xxxxxxxxxxxx>
Cc: Chris Metcalf <cmetcalf@xxxxxxxxxx>
Cc: Guan Xuetao <gxt@xxxxxxxxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/alpha/include/asm/dma-mapping.h | 5 -----
arch/arm/include/asm/dma-mapping.h | 9 ---------
arch/arm64/include/asm/dma-mapping.h | 7 -------
arch/h8300/include/asm/dma-mapping.h | 5 -----
arch/hexagon/include/asm/dma-mapping.h | 11 +----------
arch/ia64/include/asm/dma-mapping.h | 7 -------
arch/microblaze/include/asm/dma-mapping.h | 11 -----------
arch/mips/include/asm/dma-mapping.h | 8 --------
arch/openrisc/include/asm/dma-mapping.h | 5 -----
arch/powerpc/include/asm/dma-mapping.h | 17 ++---------------
arch/s390/include/asm/dma-mapping.h | 10 ----------
arch/sh/include/asm/dma-mapping.h | 13 ++-----------
arch/sparc/include/asm/dma-mapping.h | 6 ------
arch/tile/include/asm/dma-mapping.h | 7 -------
arch/unicore32/include/asm/dma-mapping.h | 10 ----------
arch/x86/include/asm/dma-mapping.h | 11 -----------
include/asm-generic/dma-mapping-common.h | 14 ++++++++++++++
17 files changed, 19 insertions(+), 137 deletions(-)
diff -puN arch/alpha/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/alpha/include/asm/dma-mapping.h
--- a/arch/alpha/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/alpha/include/asm/dma-mapping.h
@@ -12,11 +12,6 @@ static inline struct dma_map_ops *get_dm
#include <asm-generic/dma-mapping-common.h>
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- return get_dma_ops(dev)->mapping_error(dev, dma_addr);
-}
-
static inline int dma_supported(struct device *dev, u64 mask)
{
return get_dma_ops(dev)->dma_supported(dev, mask);
diff -puN arch/arm/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/arm/include/asm/dma-mapping.h
--- a/arch/arm/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/arm/include/asm/dma-mapping.h
@@ -172,15 +172,6 @@ static inline bool dma_capable(struct de
static inline void dma_mark_clean(void *addr, size_t size) { }
-/*
- * DMA errors are defined by all-bits-set in the DMA address.
- */
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- debug_dma_mapping_error(dev, dma_addr);
- return dma_addr == DMA_ERROR_CODE;
-}
-
extern int dma_supported(struct device *dev, u64 mask);
extern int arm_dma_set_mask(struct device *dev, u64 dma_mask);
diff -puN arch/arm64/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/arm64/include/asm/dma-mapping.h
--- a/arch/arm64/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/arm64/include/asm/dma-mapping.h
@@ -84,13 +84,6 @@ static inline phys_addr_t dma_to_phys(st
return (phys_addr_t)dev_addr;
}
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dev_addr)
-{
- struct dma_map_ops *ops = get_dma_ops(dev);
- debug_dma_mapping_error(dev, dev_addr);
- return ops->mapping_error(dev, dev_addr);
-}
-
static inline int dma_supported(struct device *dev, u64 mask)
{
struct dma_map_ops *ops = get_dma_ops(dev);
diff -puN arch/h8300/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/h8300/include/asm/dma-mapping.h
--- a/arch/h8300/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/h8300/include/asm/dma-mapping.h
@@ -20,9 +20,4 @@ static inline int dma_set_mask(struct de
return 0;
}
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- return 0;
-}
-
#endif
diff -puN arch/hexagon/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/hexagon/include/asm/dma-mapping.h
--- a/arch/hexagon/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/hexagon/include/asm/dma-mapping.h
@@ -31,6 +31,7 @@
struct device;
extern int bad_dma_address;
+#define DMA_ERROR_CODE bad_dma_address
extern struct dma_map_ops *dma_ops;
@@ -57,14 +58,4 @@ static inline bool dma_capable(struct de
return addr + size - 1 <= *dev->dma_mask;
}
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- struct dma_map_ops *dma_ops = get_dma_ops(dev);
-
- if (dma_ops->mapping_error)
- return dma_ops->mapping_error(dev, dma_addr);
-
- return (dma_addr == bad_dma_address);
-}
-
#endif
diff -puN arch/ia64/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/ia64/include/asm/dma-mapping.h
--- a/arch/ia64/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/ia64/include/asm/dma-mapping.h
@@ -27,13 +27,6 @@ extern void machvec_dma_sync_sg(struct d
#include <asm-generic/dma-mapping-common.h>
-static inline int dma_mapping_error(struct device *dev, dma_addr_t daddr)
-{
- struct dma_map_ops *ops = platform_dma_get_ops(dev);
- debug_dma_mapping_error(dev, daddr);
- return ops->mapping_error(dev, daddr);
-}
-
static inline int dma_supported(struct device *dev, u64 mask)
{
struct dma_map_ops *ops = platform_dma_get_ops(dev);
diff -puN arch/microblaze/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/microblaze/include/asm/dma-mapping.h
--- a/arch/microblaze/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/microblaze/include/asm/dma-mapping.h
@@ -87,17 +87,6 @@ static inline void __dma_sync(unsigned l
}
}
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- struct dma_map_ops *ops = get_dma_ops(dev);
-
- debug_dma_mapping_error(dev, dma_addr);
- if (ops->mapping_error)
- return ops->mapping_error(dev, dma_addr);
-
- return (dma_addr == DMA_ERROR_CODE);
-}
-
static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction)
{
diff -puN arch/mips/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/mips/include/asm/dma-mapping.h
--- a/arch/mips/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/mips/include/asm/dma-mapping.h
@@ -37,14 +37,6 @@ static inline int dma_supported(struct d
return ops->dma_supported(dev, mask);
}
-static inline int dma_mapping_error(struct device *dev, u64 mask)
-{
- struct dma_map_ops *ops = get_dma_ops(dev);
-
- debug_dma_mapping_error(dev, mask);
- return ops->mapping_error(dev, mask);
-}
-
static inline int
dma_set_mask(struct device *dev, u64 mask)
{
diff -puN arch/openrisc/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/openrisc/include/asm/dma-mapping.h
--- a/arch/openrisc/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/openrisc/include/asm/dma-mapping.h
@@ -43,11 +43,6 @@ static inline int dma_supported(struct d
return dma_mask == DMA_BIT_MASK(32);
}
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- return 0;
-}
-
static inline int dma_set_mask(struct device *dev, u64 dma_mask)
{
if (!dev->dma_mask || !dma_supported(dev, dma_mask))
diff -puN arch/powerpc/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/powerpc/include/asm/dma-mapping.h
--- a/arch/powerpc/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/powerpc/include/asm/dma-mapping.h
@@ -18,7 +18,9 @@
#include <asm/io.h>
#include <asm/swiotlb.h>
+#ifdef CONFIG_PPC64
#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
+#endif
/* Some dma direct funcs must be visible for use in other dma_ops */
extern void *__dma_direct_alloc_coherent(struct device *dev, size_t size,
@@ -137,21 +139,6 @@ extern int dma_set_mask(struct device *d
extern int __dma_set_mask(struct device *dev, u64 dma_mask);
extern u64 __dma_get_required_mask(struct device *dev);
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- struct dma_map_ops *dma_ops = get_dma_ops(dev);
-
- debug_dma_mapping_error(dev, dma_addr);
- if (dma_ops->mapping_error)
- return dma_ops->mapping_error(dev, dma_addr);
-
-#ifdef CONFIG_PPC64
- return (dma_addr == DMA_ERROR_CODE);
-#else
- return 0;
-#endif
-}
-
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
#ifdef CONFIG_SWIOTLB
diff -puN arch/s390/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/s390/include/asm/dma-mapping.h
--- a/arch/s390/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/s390/include/asm/dma-mapping.h
@@ -43,14 +43,4 @@ static inline bool dma_capable(struct de
return addr + size - 1 <= *dev->dma_mask;
}
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- struct dma_map_ops *dma_ops = get_dma_ops(dev);
-
- debug_dma_mapping_error(dev, dma_addr);
- if (dma_ops->mapping_error)
- return dma_ops->mapping_error(dev, dma_addr);
- return dma_addr == DMA_ERROR_CODE;
-}
-
#endif /* _ASM_S390_DMA_MAPPING_H */
diff -puN arch/sh/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/sh/include/asm/dma-mapping.h
--- a/arch/sh/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/sh/include/asm/dma-mapping.h
@@ -9,6 +9,8 @@ static inline struct dma_map_ops *get_dm
return dma_ops;
}
+#define DMA_ERROR_CODE 0
+
#include <asm-generic/dma-mapping-common.h>
static inline int dma_supported(struct device *dev, u64 mask)
@@ -38,17 +40,6 @@ static inline int dma_set_mask(struct de
void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction dir);
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- struct dma_map_ops *ops = get_dma_ops(dev);
-
- debug_dma_mapping_error(dev, dma_addr);
- if (ops->mapping_error)
- return ops->mapping_error(dev, dma_addr);
-
- return dma_addr == 0;
-}
-
/* arch/sh/mm/consistent.c */
extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_addr, gfp_t flag,
diff -puN arch/sparc/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/sparc/include/asm/dma-mapping.h
--- a/arch/sparc/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/sparc/include/asm/dma-mapping.h
@@ -38,12 +38,6 @@ static inline struct dma_map_ops *get_dm
#include <asm-generic/dma-mapping-common.h>
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- debug_dma_mapping_error(dev, dma_addr);
- return (dma_addr == DMA_ERROR_CODE);
-}
-
static inline int dma_set_mask(struct device *dev, u64 mask)
{
#ifdef CONFIG_PCI
diff -puN arch/tile/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/tile/include/asm/dma-mapping.h
--- a/arch/tile/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/tile/include/asm/dma-mapping.h
@@ -75,13 +75,6 @@ static inline bool dma_capable(struct de
}
static inline int
-dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- debug_dma_mapping_error(dev, dma_addr);
- return get_dma_ops(dev)->mapping_error(dev, dma_addr);
-}
-
-static inline int
dma_supported(struct device *dev, u64 mask)
{
return get_dma_ops(dev)->dma_supported(dev, mask);
diff -puN arch/unicore32/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/unicore32/include/asm/dma-mapping.h
--- a/arch/unicore32/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/unicore32/include/asm/dma-mapping.h
@@ -38,16 +38,6 @@ static inline int dma_supported(struct d
return dma_ops->dma_supported(dev, mask);
}
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- struct dma_map_ops *dma_ops = get_dma_ops(dev);
-
- if (dma_ops->mapping_error)
- return dma_ops->mapping_error(dev, dma_addr);
-
- return 0;
-}
-
#include <asm-generic/dma-mapping-common.h>
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
diff -puN arch/x86/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error arch/x86/include/asm/dma-mapping.h
--- a/arch/x86/include/asm/dma-mapping.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/arch/x86/include/asm/dma-mapping.h
@@ -45,17 +45,6 @@ bool arch_dma_alloc_attrs(struct device
#include <asm-generic/dma-mapping-common.h>
-/* Make sure we keep the same behaviour */
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- struct dma_map_ops *ops = get_dma_ops(dev);
- debug_dma_mapping_error(dev, dma_addr);
- if (ops->mapping_error)
- return ops->mapping_error(dev, dma_addr);
-
- return (dma_addr == DMA_ERROR_CODE);
-}
-
extern int dma_supported(struct device *hwdev, u64 mask);
extern int dma_set_mask(struct device *dev, u64 mask);
diff -puN include/asm-generic/dma-mapping-common.h~dma-mapping-cosolidate-dma_mapping_error include/asm-generic/dma-mapping-common.h
--- a/include/asm-generic/dma-mapping-common.h~dma-mapping-cosolidate-dma_mapping_error
+++ a/include/asm-generic/dma-mapping-common.h
@@ -313,4 +313,18 @@ static inline void dma_free_noncoherent(
dma_free_attrs(dev, size, cpu_addr, dma_handle, &attrs);
}
+static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+ debug_dma_mapping_error(dev, dma_addr);
+
+ if (get_dma_ops(dev)->mapping_error)
+ return get_dma_ops(dev)->mapping_error(dev, dma_addr);
+
+#ifdef DMA_ERROR_CODE
+ return dma_addr == DMA_ERROR_CODE;
+#else
+ return 0;
+#endif
+}
+
#endif
_
Patches currently in -mm which might be from hch@xxxxxx are
add-myself-to-get_maintainerignore.patch
mm-swap-zswap-maybe_preload-refactoring.patch
linux-next.patch
dma-mapping-consolidate-dma_allocfree_attrscoherent.patch
dma-mapping-consolidate-dma_allocfree_noncoherent.patch
dma-mapping-cosolidate-dma_mapping_error.patch
dma-mapping-consolidate-dma_supported.patch
dma-mapping-consolidate-dma_set_mask.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
