MIPS: Fix decoding of c0_config1 for MIPSxx caches with 32 ways per set.

This affects certain 4Kc cores.

Signed-off-by: Douglas Leung <douglas@mips.com>
Signed-off-by: Steven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3855/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index e56efd0..f092c26 100644 (file)
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -977,7 +977,7 @@ static void __cpuinit probe_pcache(void)
                        c->icache.linesz = 2 << lsize;
                else
                        c->icache.linesz = lsize;
-               c->icache.sets = 64 << ((config1 >> 22) & 7);
+               c->icache.sets = 32 << (((config1 >> 22) + 1) & 7);
                c->icache.ways = 1 + ((config1 >> 16) & 7);
 
                icache_size = c->icache.sets *
@@ -997,7 +997,7 @@ static void __cpuinit probe_pcache(void)
                        c->dcache.linesz = 2 << lsize;
                else
                        c->dcache.linesz= lsize;
-               c->dcache.sets = 64 << ((config1 >> 13) & 7);
+               c->dcache.sets = 32 << (((config1 >> 13) + 1) & 7);
                c->dcache.ways = 1 + ((config1 >> 7) & 7);
 
                dcache_size = c->dcache.sets *