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| author | Christoph Hellwig <hch@lst.de> | 2015-09-09 15:39:49 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-10 13:29:01 -0700 |
| commit | ee196371d5cb1942ebdccc16bdce389812aa265e (patch) | |
| tree | 59d8b00098bf929a6bb093c78e239cf265632922 /arch/sh | |
| parent | efa21e432c7b3c8ae976039d614a017799b6e874 (diff) | |
| download | linux-ee196371d5cb1942ebdccc16bdce389812aa265e.tar.gz linux-ee196371d5cb1942ebdccc16bdce389812aa265e.tar.bz2 linux-ee196371d5cb1942ebdccc16bdce389812aa265e.zip | |
dma-mapping: consolidate dma_supported
Most architectures just call into ->dma_supported, but some also return 1
if the method is not present, or 0 if no dma ops are present (although
that should never happeb). Consolidate this more broad version into
common code.
Also fix h8300 which inorrectly always returned 0, which would have been
a problem if it's dma_set_mask implementation wasn't a similarly buggy
noop.
As a few architectures have much more elaborate implementations, we
still allow for arch overrides.
[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>
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/include/asm/dma-mapping.h | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/sh/include/asm/dma-mapping.h b/arch/sh/include/asm/dma-mapping.h index 98308c497162..088f6e5f1a92 100644 --- a/arch/sh/include/asm/dma-mapping.h +++ b/arch/sh/include/asm/dma-mapping.h @@ -13,16 +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_supported(struct device *dev, u64 mask) -{ - struct dma_map_ops *ops = get_dma_ops(dev); - - if (ops->dma_supported) - return ops->dma_supported(dev, mask); - - return 1; -} - static inline int dma_set_mask(struct device *dev, u64 mask) { struct dma_map_ops *ops = get_dma_ops(dev); |