MIPS: Malta: GIC IPIs may be used without MT

It's perfectly valid to use SMP on a non-MT CPU and use the GIC for
IPIs. Set them up conditional upon CONFIG_MIPS_GIC_IPI rather than
CONFIG_MIPS_MT_SMP.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Paul Burton <paul.burton@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/6654/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c
index 93103f8..c6cbfeb 100644 (file)
--- a/arch/mips/mti-malta/malta-int.c
+++ b/arch/mips/mti-malta/malta-int.c
@@ -286,10 +286,6 @@ asmlinkage void plat_irq_dispatch(void)
 
 #ifdef CONFIG_MIPS_MT_SMP
 
-
-#define GIC_MIPS_CPU_IPI_RESCHED_IRQ   3
-#define GIC_MIPS_CPU_IPI_CALL_IRQ      4
-
 #define MIPS_CPU_IPI_RESCHED_IRQ 0     /* SW int 0 for resched */
 #define C_RESCHED C_SW0
 #define MIPS_CPU_IPI_CALL_IRQ 1                /* SW int 1 for resched */
@@ -306,6 +302,13 @@ static void ipi_call_dispatch(void)
        do_IRQ(MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_CALL_IRQ);
 }
 
+#endif /* CONFIG_MIPS_MT_SMP */
+
+#ifdef CONFIG_MIPS_GIC_IPI
+
+#define GIC_MIPS_CPU_IPI_RESCHED_IRQ   3
+#define GIC_MIPS_CPU_IPI_CALL_IRQ      4
+
 static irqreturn_t ipi_resched_interrupt(int irq, void *dev_id)
 {
 #ifdef MIPS_VPE_APSP_API
@@ -336,7 +339,7 @@ static struct irqaction irq_call = {
        .flags          = IRQF_PERCPU,
        .name           = "IPI_call"
 };
-#endif /* CONFIG_MIPS_MT_SMP */
+#endif /* CONFIG_MIPS_GIC_IPI */
 
 static int gic_resched_int_base;
 static int gic_call_int_base;
@@ -416,7 +419,7 @@ static struct gic_intr_map gic_intr_map[GIC_NUM_INTRS] = {
 };
 #undef X
 
-#if defined(CONFIG_MIPS_MT_SMP)
+#ifdef CONFIG_MIPS_GIC_IPI
 static void __init fill_ipi_map1(int baseintr, int cpu, int cpupin)
 {
        int intr = baseintr + cpu;
@@ -532,7 +535,7 @@ void __init arch_init_irq(void)
        if (gic_present) {
                /* FIXME */
                int i;
-#if defined(CONFIG_MIPS_MT_SMP)
+#if defined(CONFIG_MIPS_GIC_IPI)
                gic_call_int_base = GIC_NUM_INTRS -
                        (NR_CPUS - nr_cpu_ids) * 2 - nr_cpu_ids;
                gic_resched_int_base = gic_call_int_base - nr_cpu_ids;
@@ -547,7 +550,7 @@ void __init arch_init_irq(void)
                                (i | (0x1 << MSC01_SC_CFG_GICENA_SHF));
                        pr_debug("GIC Enabled\n");
                }
-#if defined(CONFIG_MIPS_MT_SMP)
+#if defined(CONFIG_MIPS_GIC_IPI)
                /* set up ipi interrupts */
                if (cpu_has_vint) {
                        set_vi_handler(MIPSCPU_INT_IPI0, malta_ipi_irqdispatch);