m68k/sun3: Convert Sun3/3x to genirq

Replace the custom irq handler that masks the irq and calls do_IRQ(), and
the unmasking in the individual handlers, by handle_level_irq().

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Sam Creasey <sammy@sammy.net>

2 files changed, 14 insertions, 4 deletions

diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index f2dc708d3da9..290f9c838b35 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -87,9 +87,7 @@ config MMU_SUN3
 config USE_GENERIC_HARDIRQS
         bool "Use genirq"
         depends on MMU
-        depends on !SUN3X
         depends on !Q40
-        depends on !SUN3
         select HAVE_GENERIC_HARDIRQS
         select GENERIC_IRQ_SHOW
 
diff --git a/arch/m68k/sun3/sun3ints.c b/arch/m68k/sun3/sun3ints.c
index 1273eb879a15..626b601931e9 100644
--- a/arch/m68k/sun3/sun3ints.c
+++ b/arch/m68k/sun3/sun3ints.c
@@ -53,7 +53,9 @@ static irqreturn_t sun3_int7(int irq, void *dev_id)
 {
         unsigned int cnt;
 
+#ifndef CONFIG_GENERIC_HARDIRQS
         *sun3_intreg |=  (1 << irq);
+#endif
         cnt = kstat_irqs_cpu(irq, 0);
         if (!(cnt % 2000))
                 sun3_leds(led_pattern[cnt % 16000 / 2000]);
@@ -67,7 +69,9 @@ static irqreturn_t sun3_int5(int irq, void *dev_id)
 #ifdef CONFIG_SUN3
         intersil_clear();
 #endif
+#ifndef CONFIG_GENERIC_HARDIRQS
         *sun3_intreg |=  (1 << irq);
+#endif
 #ifdef CONFIG_SUN3
         intersil_clear();
 #endif
@@ -85,12 +89,14 @@ static irqreturn_t sun3_vec255(int irq, void *dev_id)
         return IRQ_HANDLED;
 }
 
+#ifndef CONFIG_GENERIC_HARDIRQS
 static void sun3_inthandle(unsigned int irq, struct pt_regs *fp)
 {
         *sun3_intreg &= ~(1 << irq);
 
         do_IRQ(irq, fp);
 }
+#endif
 
 static void sun3_irq_enable(struct irq_data *data)
 {
@@ -108,15 +114,21 @@ static struct irq_chip sun3_irq_chip = {
         .irq_shutdown   = m68k_irq_shutdown,
         .irq_enable     = sun3_irq_enable,
         .irq_disable    = sun3_irq_disable,
+#ifdef CONFIG_GENERIC_HARDIRQS
+        .irq_mask       = sun3_irq_disable,
+        .irq_unmask     = sun3_irq_enable,
+#endif
 };
 
 void __init sun3_init_IRQ(void)
 {
         *sun3_intreg = 1;
 
+#ifndef CONFIG_GENERIC_HARDIRQS
         m68k_setup_auto_interrupt(sun3_inthandle);
-        m68k_setup_irq_controller(&sun3_irq_chip, handle_simple_irq,
-                                  IRQ_AUTO_1, 7);
+#endif
+        m68k_setup_irq_controller(&sun3_irq_chip, handle_level_irq, IRQ_AUTO_1,
+                                  7);
         m68k_setup_user_interrupt(VEC_USER, 128, NULL);
 
         if (request_irq(IRQ_AUTO_5, sun3_int5, 0, "int5", NULL))