powerpc/irq: Remove fallback to __do_IRQ()

We should no longer have any irq code that needs __do_IRQ(), so
remove the fallback to __do_IRQ().

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index a5fe12a..7d46e5d 100644 (file)
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -254,7 +254,6 @@ static inline void handle_one_irq(unsigned int irq)
        struct thread_info *curtp, *irqtp;
        unsigned long saved_sp_limit;
        struct irq_desc *desc;
-       void *handler;
 
        /* Switch to the irq stack to handle this */
        curtp = current_thread_info();
@@ -269,10 +268,6 @@ static inline void handle_one_irq(unsigned int irq)
        desc = irq_desc + irq;
        saved_sp_limit = current->thread.ksp_limit;
 
-       handler = desc->handle_irq;
-       if (handler == NULL)
-               handler = &__do_IRQ;
-
        irqtp->task = curtp->task;
        irqtp->flags = 0;
 
@@ -284,7 +279,7 @@ static inline void handle_one_irq(unsigned int irq)
        current->thread.ksp_limit = (unsigned long)irqtp +
                _ALIGN_UP(sizeof(struct thread_info), 16);
 
-       call_handle_irq(irq, desc, irqtp, handler);
+       call_handle_irq(irq, desc, irqtp, desc->handle_irq);
        current->thread.ksp_limit = saved_sp_limit;
        irqtp->task = NULL;