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>

1 files changed, 1 insertions, 6 deletions

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index a5fe12aa937d..7d46e5d5b207 100644
--- 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;