[PATCH] ppc64: Fix semantics of __ioremap

This patch fixes ppc64 __ioremap() so that it stops adding implicitely
_PAGE_GUARDED when the cache is not writeback, and instead, let the callers
provide the flag they want here.  This allows things like framebuffers to
explicitely request a non-cacheable and non-guarded mapping which is more
efficient for that type of memory without side effects.  The patch also
fixes all current callers to add _PAGE_GUARDED except btext, which is fine
without it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/ppc64/kernel/maple_setup.c b/arch/ppc64/kernel/maple_setup.c
index 1db6ea0f336f..8cf95a27178e 100644
--- a/arch/ppc64/kernel/maple_setup.c
+++ b/arch/ppc64/kernel/maple_setup.c
@@ -142,7 +142,7 @@ static void __init maple_init_early(void)
         if (physport) {
                 void *comport;
                 /* Map the uart for udbg. */
-                comport = (void *)__ioremap(physport, 16, _PAGE_NO_CACHE);
+                comport = (void *)ioremap(physport, 16);
                 udbg_init_uart(comport, default_speed);
 
                 ppc_md.udbg_putc = udbg_putc;