ARM: shmobile: r8a7791: Allow booting secondary CPU cores in debug mode

Now debug resource reset is handled properly, allow booting secondary
CPU cores when hardware debug mode is enabled (MD21=1, SW8-4=OFF on
koelsch) on legacy r8a7791.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm/mach-shmobile/smp-r8a7791.c b/arch/arm/mach-shmobile/smp-r8a7791.c
index 2d6417a..2948c22 100644 (file)
--- a/arch/arm/mach-shmobile/smp-r8a7791.c
+++ b/arch/arm/mach-shmobile/smp-r8a7791.c
@@ -42,21 +42,9 @@ static void __init r8a7791_smp_prepare_cpus(unsigned int max_cpus)
        rcar_gen2_pm_init();
 }
 
-static int r8a7791_smp_boot_secondary(unsigned int cpu,
-                                     struct task_struct *idle)
-{
-       /* Error out when hardware debug mode is enabled */
-       if (rcar_gen2_read_mode_pins() & BIT(21)) {
-               pr_warn("Unable to boot CPU%u when MD21 is set\n", cpu);
-               return -ENOTSUPP;
-       }
-
-       return shmobile_smp_apmu_boot_secondary(cpu, idle);
-}
-
 const struct smp_operations r8a7791_smp_ops __initconst = {
        .smp_prepare_cpus       = r8a7791_smp_prepare_cpus,
-       .smp_boot_secondary     = r8a7791_smp_boot_secondary,
+       .smp_boot_secondary     = shmobile_smp_apmu_boot_secondary,
 #ifdef CONFIG_HOTPLUG_CPU
        .cpu_can_disable        = shmobile_smp_cpu_can_disable,
        .cpu_die                = shmobile_smp_apmu_cpu_die,