sh: Provide the kmap_coherent() interface generically.

This plugs in kmap_coherent() for the non-SH4 cases to permit the
pg-mmu.c bits to be used generically across all CPUs. SH-5 is still in
the TODO state, but will move over to fixmap and the generic interface
gradually.

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

1 files changed, 15 insertions, 0 deletions

diff --git a/arch/sh/mm/cache-sh5.c b/arch/sh/mm/cache-sh5.c
index 698113fce814..28f3c8fb1b99 100644
--- a/arch/sh/mm/cache-sh5.c
+++ b/arch/sh/mm/cache-sh5.c
@@ -29,6 +29,21 @@ void __init p3_cache_init(void)
         dtlb_cache_slot = sh64_get_wired_dtlb_entry();
 }
 
+void __init kmap_coherent_init(void)
+{
+        /* XXX ... */
+}
+
+void *kmap_coherent(struct page *page, unsigned long addr)
+{
+        /* XXX ... */
+        return NULL;
+}
+
+void kunmap_coherent(void)
+{
+}
+
 #ifdef CONFIG_DCACHE_DISABLED
 #define sh64_dcache_purge_all()                                 do { } while (0)
 #define sh64_dcache_purge_coloured_phy_page(paddr, eaddr)       do { } while (0)