[MIPS] Compile __do_IRQ() when really needed

__do_IRQ() is needed only by irq handlers that can't use
default handlers defined in kernel/irq/chip.c.

For others platforms there's no need to compile this function
since it won't be used. For those platforms this patch defines
GENERIC_HARDIRQS_NO__DO_IRQ symbol which is used exactly for
this purpose.

Futhermore for platforms which do not use __do_IRQ(), end()
method which is part of the 'irq_chip' structure is not used.
This patch simply removes this method in this case.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 0 insertions, 14 deletions

diff --git a/arch/mips/emma2rh/common/irq_emma2rh.c b/arch/mips/emma2rh/common/irq_emma2rh.c
index 59b98299c896..8d880f0b06ec 100644
--- a/arch/mips/emma2rh/common/irq_emma2rh.c
+++ b/arch/mips/emma2rh/common/irq_emma2rh.c
@@ -56,19 +56,12 @@ static void emma2rh_irq_disable(unsigned int irq)
         ll_emma2rh_irq_disable(irq - emma2rh_irq_base);
 }
 
-static void emma2rh_irq_end(unsigned int irq)
-{
-        if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
-                ll_emma2rh_irq_enable(irq - emma2rh_irq_base);
-}
-
 struct irq_chip emma2rh_irq_controller = {
         .typename = "emma2rh_irq",
         .ack = emma2rh_irq_disable,
         .mask = emma2rh_irq_disable,
         .mask_ack = emma2rh_irq_disable,
         .unmask = emma2rh_irq_enable,
-        .end = emma2rh_irq_end,
 };
 
 void emma2rh_irq_init(u32 irq_base)
diff --git a/arch/mips/emma2rh/markeins/irq_markeins.c b/arch/mips/emma2rh/markeins/irq_markeins.c
index 3ac4e405ecdc..2116d9be5fa9 100644
--- a/arch/mips/emma2rh/markeins/irq_markeins.c
+++ b/arch/mips/emma2rh/markeins/irq_markeins.c
@@ -48,19 +48,12 @@ static void emma2rh_sw_irq_disable(unsigned int irq)
         ll_emma2rh_sw_irq_disable(irq - emma2rh_sw_irq_base);
 }
 
-static void emma2rh_sw_irq_end(unsigned int irq)
-{
-        if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
-                ll_emma2rh_sw_irq_enable(irq - emma2rh_sw_irq_base);
-}
-
 struct irq_chip emma2rh_sw_irq_controller = {
         .typename = "emma2rh_sw_irq",
         .ack = emma2rh_sw_irq_disable,
         .mask = emma2rh_sw_irq_disable,
         .mask_ack = emma2rh_sw_irq_disable,
         .unmask = emma2rh_sw_irq_enable,
-        .end = emma2rh_sw_irq_end,
 };
 
 void emma2rh_sw_irq_init(u32 irq_base)