ARM: remove old-style irq entry

The last user of arch_irq_handler_default is gone now, so the
entry-macro-multi.S file and all references to mach/entry-macro.S can
be removed, as well as the asm_do_IRQ() entrypoint into the interrupt
handling routines implemented in C.

Note: The ARMv7-M entry still uses its own top-level IRQ entry, calling
nvic_handle_irq() from assembly. This could be changed to go through
generic_handle_arch_irq() as well, but it's unclear to me if there are
any benefits.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[ardb: keep irq_handler macro as it carries all the IRQ stack handling]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Tested-by: Vladimir Murzin <vladimir.murzin@arm.com> # ARMv7M
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 0 insertions, 17 deletions

diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 5deb40f39999..5c6f8d11a3ce 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -120,23 +120,6 @@ void handle_IRQ(unsigned int irq, struct pt_regs *regs)
 		ack_bad_irq(irq);
 }
 
-/*
- * asm_do_IRQ is the interface to be used from assembly code.
- */
-asmlinkage void __exception_irq_entry
-asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
-{
-	struct pt_regs *old_regs;
-
-	irq_enter();
-	old_regs = set_irq_regs(regs);
-
-	handle_IRQ(irq, regs);
-
-	set_irq_regs(old_regs);
-	irq_exit();
-}
-
 void __init init_IRQ(void)
 {
 	int ret;