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| author | Grant Likely <grant.likely@secretlab.ca> | 2009-11-23 14:49:36 -0700 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2009-11-23 14:49:36 -0700 |
| commit | 2cfcadde83b308240690ff1c18f117d8bc7a08b0 (patch) | |
| tree | aa0795966d070d1f7a5221232d9ba47744bddb5f /arch/sh/mm/cache.c | |
| parent | e91edcf5a2940bb7f1f316c871dfe9e2aaf9d6d9 (diff) | |
| parent | 648f4e3e50c4793d9dbf9a09afa193631f76fa26 (diff) | |
Merge commit 'v2.6.32-rc8'
Diffstat (limited to 'arch/sh/mm/cache.c')
| -rw-r--r-- | arch/sh/mm/cache.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c index 35c37b7f717..a2dc7f9ecc5 100644 --- a/arch/sh/mm/cache.c +++ b/arch/sh/mm/cache.c @@ -128,7 +128,7 @@ void __update_cache(struct vm_area_struct *vma, return; page = pfn_to_page(pfn); - if (pfn_valid(pfn) && page_mapping(page)) { + if (pfn_valid(pfn)) { int dirty = test_and_clear_bit(PG_dcache_dirty, &page->flags); if (dirty) { unsigned long addr = (unsigned long)page_address(page); @@ -265,6 +265,8 @@ static void __init emit_cache_params(void) void __init cpu_cache_init(void) { + unsigned int cache_disabled = !(__raw_readl(CCR) & CCR_CACHE_ENABLE); + compute_alias(&boot_cpu_data.icache); compute_alias(&boot_cpu_data.dcache); compute_alias(&boot_cpu_data.scache); @@ -273,6 +275,13 @@ void __init cpu_cache_init(void) __flush_purge_region = noop__flush_region; __flush_invalidate_region = noop__flush_region; + /* + * No flushing is necessary in the disabled cache case so we can + * just keep the noop functions in local_flush_..() and __flush_..() + */ + if (unlikely(cache_disabled)) + goto skip; + if (boot_cpu_data.family == CPU_FAMILY_SH2) { extern void __weak sh2_cache_init(void); @@ -312,5 +321,6 @@ void __init cpu_cache_init(void) sh5_cache_init(); } +skip: emit_cache_params(); } |