MIPS: Decode config3 register on Ingenic SoCs

XBurst misses a config2 register, so config3 decode was skipped in
decode_configs().

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: od@zcrc.me
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index fd77dbc..a9c8233 100644 (file)
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -1956,9 +1956,17 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
 static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu)
 {
        decode_configs(c);
+
+       /*
+        * XBurst misses a config2 register, so config3 decode was skipped in
+        * decode_configs().
+        */
+       decode_config3(c);
+
        /* XBurst does not implement the CP0 counter. */
        c->options &= ~MIPS_CPU_COUNTER;
        BUG_ON(!__builtin_constant_p(cpu_has_counter) || cpu_has_counter);
+
        switch (c->processor_id & PRID_IMP_MASK) {
        case PRID_IMP_XBURST:
                c->cputype = CPU_XBURST;