Remove the eieio() calls in _memcpy_fromio, to bring its implementation
closer to the one from lib/iomem_copy.c. These eieio() calls don't seem
to be necessary, because the _memcpy_toio completely omits them. Also
the legacy code from ppc was not doing them.
Signed-off-by: Julian Vetter <jul...@outer-limits.org>
---
arch/powerpc/kernel/io.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/powerpc/kernel/io.c b/arch/powerpc/kernel/io.c
index 6af535905984..81e5d54260a1 100644
--- a/arch/powerpc/kernel/io.c
+++ b/arch/powerpc/kernel/io.c
@@ -155,21 +155,18 @@ void _memcpy_fromio(void *dest, const volatile void
__iomem *src,
__asm__ __volatile__ ("sync" : : : "memory");
while(n && (!IO_CHECK_ALIGN(vsrc, 4) || !IO_CHECK_ALIGN(dest, 4))) {
*((u8 *)dest) = *((volatile u8 *)vsrc);
- eieio();
vsrc++;
dest++;
n--;
}
while(n >= 4) {
*((u32 *)dest) = *((volatile u32 *)vsrc);
- eieio();
vsrc += 4;
dest += 4;
n -= 4;
}
while(n) {
*((u8 *)dest) = *((volatile u8 *)vsrc);
- eieio();
vsrc++;
dest++;
n--;
--
2.34.1
