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powerpc/cacheflush: fix variable set but not used 

The powerpc's flush_cache_vmap() is defined as a macro and never use
both of its arguments, so it will generate a compilation warning,

lib/ioremap.c: In function 'ioremap_page_range':
lib/ioremap.c:203:16: warning: variable 'start' set but not used
[-Wunused-but-set-variable]

Fix it by making it an inline function.

Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Qian Cai 2019-06-06 09:58:13 -04:00 committed by Michael Ellerman
parent 3becd11dff
commit 04db3ede40
1 changed files with 5 additions and 2 deletions
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7
arch/powerpc/include/asm/cacheflush.h
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@ -32,9 +32,12 @@
* not expect this type of fault. flush_cache_vmap is not exactly the right
* place to put this, but it seems to work well enough.
*/
#define flush_cache_vmap(start, end) do { asm volatile("ptesync" ::: "memory"); } while (0)
static inline void flush_cache_vmap(unsigned long start, unsigned long end)
{
asm volatile("ptesync" ::: "memory");
}
#else
#define flush_cache_vmap(start, end) do { } while (0)
static inline void flush_cache_vmap(unsigned long start, unsigned long end) { }
#endif
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1