sh: Bail from kmap_coherent_init() if we have no dcache aliases.

This kills off the ifdef from kmap_coherent_init() and just bails if
there are no cache aliases. This permits the kmap coherent code to be
used on other CPUs.

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

1 files changed, 3 insertions, 2 deletions

diff --git a/arch/sh/mm/pg-mmu.c b/arch/sh/mm/pg-mmu.c
index 027c4d83fb8e..7a6ef34bd499 100644
--- a/arch/sh/mm/pg-mmu.c
+++ b/arch/sh/mm/pg-mmu.c
@@ -22,13 +22,14 @@ static pte_t *kmap_coherent_pte;
 
 void __init kmap_coherent_init(void)
 {
-#if defined(CONFIG_CPU_SH4) || defined(CONFIG_SH7705_CACHE_32KB)
         unsigned long vaddr;
 
+        if (!boot_cpu_data.dcache.n_aliases)
+                return;
+
         /* cache the first coherent kmap pte */
         vaddr = __fix_to_virt(FIX_CMAP_BEGIN);
         kmap_coherent_pte = kmap_get_fixmap_pte(vaddr);
-#endif
 }
 
 static void *kmap_coherent(struct page *page, unsigned long addr)