alpha: irq clean up

Stop touching irq_desc[irq] directly, instead use accessor
functions provided. Use irq_has_action instead of directly
testing the irq_desc.

Tested-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/arch/alpha/kernel/irq_pyxis.c b/arch/alpha/kernel/irq_pyxis.c
index 4e1904cd0fc..9f603cfd440 100644
--- a/arch/alpha/kernel/irq_pyxis.c
+++ b/arch/alpha/kernel/irq_pyxis.c
@@ -50,7 +50,8 @@ pyxis_startup_irq(unsigned int irq)
 static void
 pyxis_end_irq(unsigned int irq)
 {
-        if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
+        struct irq_desc *desc = irq_to_desc(irq);
+        if (desc || !(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
                 pyxis_enable_irq(irq);
 }
 
@@ -120,7 +121,7 @@ init_pyxis_irqs(unsigned long ignore_mask)
                 if ((ignore_mask >> i) & 1)
                         continue;
                 set_irq_chip_and_handler(i, &pyxis_irq_type, alpha_do_IRQ);
-                irq_desc[i].status |= IRQ_LEVEL;
+                irq_to_desc(i)->status |= IRQ_LEVEL;
         }
 
         setup_irq(16+7, &isa_cascade_irqaction);