[ Upstream commit 04db3ede40ae4fc23a5c4237254c4a53bbe4c1f2 ]
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@xxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
arch/powerpc/include/asm/cacheflush.h | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/cacheflush.h b/arch/powerpc/include/asm/cacheflush.h
index 74d60cfe8ce5..fd318f7c3eed 100644
--- a/arch/powerpc/include/asm/cacheflush.h
+++ b/arch/powerpc/include/asm/cacheflush.h
@@ -29,9 +29,12 @@
* 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
--
2.20.1
