sh: Migrate SH-4 cacheflush ops to function pointers.

This paves the way for allowing individual CPUs to overload the
individual flushing routines that they care about without having to
depend on weak aliases. SH-4 is converted over initially, as it wires
up pretty much everything. The majority of the other CPUs will simply use
the default no-op implementation with their own region flushers wired up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 10 insertions, 3 deletions

diff --git a/arch/sh/mm/flush-sh4.c b/arch/sh/mm/flush-sh4.c
index 1b6b6a1..99c50dc 100644
--- a/arch/sh/mm/flush-sh4.c
+++ b/arch/sh/mm/flush-sh4.c
@@ -8,7 +8,7 @@
  * START: Virtual Address (U0, P1, or P3)
  * SIZE: Size of the region.
  */
-void __weak __flush_wback_region(void *start, int size)
+static void sh4__flush_wback_region(void *start, int size)
 {
 	reg_size_t aligned_start, v, cnt, end;
 
@@ -51,7 +51,7 @@ void __weak __flush_wback_region(void *start, int size)
  * START: Virtual Address (U0, P1, or P3)
  * SIZE: Size of the region.
  */
-void __weak __flush_purge_region(void *start, int size)
+static void sh4__flush_purge_region(void *start, int size)
 {
 	reg_size_t aligned_start, v, cnt, end;
 
@@ -90,7 +90,7 @@ void __weak __flush_purge_region(void *start, int size)
 /*
  * No write back please
  */
-void __weak __flush_invalidate_region(void *start, int size)
+static void sh4__flush_invalidate_region(void *start, int size)
 {
 	reg_size_t aligned_start, v, cnt, end;
 
@@ -126,3 +126,10 @@ void __weak __flush_invalidate_region(void *start, int size)
 		cnt--;
 	}
 }
+
+void __init sh4__flush_region_init(void)
+{
+	__flush_wback_region		= sh4__flush_wback_region;
+	__flush_invalidate_region	= sh4__flush_invalidate_region;
+	__flush_purge_region		= sh4__flush_purge_region;
+}