MIPS: Loongson64: Set IPI_Enable register per core by itself

In the current code, for example, core 1 sets Core[0, 1, 2, 3]_IPI_Enalbe
register and core 2, 3 do the same thing on the 1-way Loongson64 platform,
this is not necessary. Set IPI_Enable register per core by itself to avoid
duplicate operations and make the logic more clear.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

diff --git a/arch/mips/loongson64/smp.c b/arch/mips/loongson64/smp.c
index e744e1b..7d58853 100644 (file)
--- a/arch/mips/loongson64/smp.c
+++ b/arch/mips/loongson64/smp.c
@@ -348,8 +348,7 @@ static void loongson3_init_secondary(void)
        /* Set interrupt mask, but don't enable */
        change_c0_status(ST0_IM, imask);
 
-       for (i = 0; i < num_possible_cpus(); i++)
-               loongson3_ipi_write32(0xffffffff, ipi_en0_regs[cpu_logical_map(i)]);
+       loongson3_ipi_write32(0xffffffff, ipi_en0_regs[cpu_logical_map(cpu)]);
 
        per_cpu(cpu_state, cpu) = CPU_ONLINE;
        cpu_set_core(&cpu_data[cpu],
@@ -420,6 +419,7 @@ static void __init loongson3_smp_setup(void)
        ipi_status0_regs_init();
        ipi_en0_regs_init();
        ipi_mailbox_buf_init();
+       loongson3_ipi_write32(0xffffffff, ipi_en0_regs[cpu_logical_map(0)]);
        cpu_set_core(&cpu_data[0],
                     cpu_logical_map(0) % loongson_sysconf.cores_per_package);
        cpu_data[0].package = cpu_logical_map(0) / loongson_sysconf.cores_per_package;