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| author | Huacai Chen <chenhc@lemote.com> | 2017-03-16 21:00:29 +0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2017-03-21 23:22:43 +0100 |
| commit | 0be032c190abcdcfa948082b6a1e0d461184ba4d (patch) | |
| tree | 5335faa32a7118837e6bfc5644b231219781ca50 /arch/mips/mm/c-r4k.c | |
| parent | 0115f6cbf26663c86496bc56eeea293f85b77897 (diff) | |
| download | linux-0be032c190abcdcfa948082b6a1e0d461184ba4d.tar.gz linux-0be032c190abcdcfa948082b6a1e0d461184ba4d.tar.bz2 linux-0be032c190abcdcfa948082b6a1e0d461184ba4d.zip | |
MIPS: c-r4k: Fix Loongson-3's vcache/scache waysize calculation
If scache.waysize is 0, r4k___flush_cache_all() will do nothing and
then cause bugs. BTW, though vcache.waysize isn't being used by now,
we also fix its calculation.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J . Hill <Steven.Hill@caviumnetworks.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15756/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mm/c-r4k.c')
| -rw-r--r-- | arch/mips/mm/c-r4k.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index e7f798d55fbc..3fe99cb271a9 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -1562,6 +1562,7 @@ static void probe_vcache(void) vcache_size = c->vcache.sets * c->vcache.ways * c->vcache.linesz; c->vcache.waybit = 0; + c->vcache.waysize = vcache_size / c->vcache.ways; pr_info("Unified victim cache %ldkB %s, linesize %d bytes.\n", vcache_size >> 10, way_string[c->vcache.ways], c->vcache.linesz); @@ -1664,6 +1665,7 @@ static void __init loongson3_sc_init(void) /* Loongson-3 has 4 cores, 1MB scache for each. scaches are shared */ scache_size *= 4; c->scache.waybit = 0; + c->scache.waysize = scache_size / c->scache.ways; pr_info("Unified secondary cache %ldkB %s, linesize %d bytes.\n", scache_size >> 10, way_string[c->scache.ways], c->scache.linesz); if (scache_size) |