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

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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>
This commit is contained in:
Paul Mundt
2009-08-15 09:03:59 +09:00
parent d2dcd9101b
commit 8edcfcbbd1
1 changed files with 3 additions and 2 deletions
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5
arch/sh/mm/pg-mmu.c
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@@ -22,13 +22,14 @@ static pte_t *kmap_coherent_pte;
void __init kmap_coherent_init(void) void __init kmap_coherent_init(void)
{ {
#if defined(CONFIG_CPU_SH4) || defined(CONFIG_SH7705_CACHE_32KB)
unsigned long vaddr; unsigned long vaddr;
if (!boot_cpu_data.dcache.n_aliases)
return;
/* cache the first coherent kmap pte */ /* cache the first coherent kmap pte */
vaddr = __fix_to_virt(FIX_CMAP_BEGIN); vaddr = __fix_to_virt(FIX_CMAP_BEGIN);
kmap_coherent_pte = kmap_get_fixmap_pte(vaddr); kmap_coherent_pte = kmap_get_fixmap_pte(vaddr);
#endif
} }
static void *kmap_coherent(struct page *page, unsigned long addr) static void *kmap_coherent(struct page *page, unsigned long addr)