Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH v3 01/17] asm-generic: io: implement relaxed accessor macros as conditional wrappers | Date | Thu, 25 Sep 2014 12:32 +0200 |
| |
On Wednesday 24 September 2014 18:17:20 Will Deacon wrote: > {read,write}{b,w,l,q}_relaxed are implemented by some architectures in > order to permit memory-mapped I/O accesses with weaker barrier semantics > than the non-relaxed variants. > > This patch adds wrappers to asm-generic so that drivers can rely on the > relaxed accessors being available, even if they don't always provide > weaker ordering guarantees. Since some architectures both include > asm-generic/io.h and define some relaxed accessors, the definitions here > are conditional for the time being. > > Cc: Arnd Bergmann <arnd@arndb.de> > Signed-off-by: Will Deacon <will.deacon@arm.com> > --- > include/asm-generic/io.h | 26 ++++++++++++++++++++++++++ > 1 file changed, 26 insertions(+) >
Acked-by: Arnd Bergmann <arnd@arndb.de>
| |