forge/linux-pinenote
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

parisc: io: implement dummy relaxed accessor macros for writes

Browse source 
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 dummy macros for the write accessors to parisc, in the
same vein as the dummy definitions for the relaxed read accessors.

Cc: Helge Deller <deller@gmx.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Will Deacon 2013-09-04 11:34:08 +01:00
commit 2f083481cf
1 changed files with 8 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

4
arch/parisc/include/asm/io.h
View file

@ -221,6 +221,10 @@ static inline void writeq(unsigned long long q, volatile void __iomem *addr)
#define readw_relaxed(addr) readw(addr) #define readw_relaxed(addr) readw(addr)
#define readl_relaxed(addr) readl(addr) #define readl_relaxed(addr) readl(addr)
#define readq_relaxed(addr) readq(addr) #define readq_relaxed(addr) readq(addr)
#define writeb_relaxed(b, addr) writeb(b, addr)
#define writew_relaxed(w, addr) writew(w, addr)
#define writel_relaxed(l, addr) writel(l, addr)
#define writeq_relaxed(q, addr) writeq(q, addr)
#define mmiowb() do { } while (0) #define mmiowb() do { } while (0)