[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>

1 files changed, 0 insertions, 14 deletions

diff --git a/arch/mips/vr41xx/common/icu.c b/arch/mips/vr41xx/common/icu.c
index 54b92a74c7ac..c075261976c5 100644
--- a/arch/mips/vr41xx/common/icu.c
+++ b/arch/mips/vr41xx/common/icu.c
@@ -427,19 +427,12 @@ static void enable_sysint1_irq(unsigned int irq)
         icu1_set(MSYSINT1REG, 1 << SYSINT1_IRQ_TO_PIN(irq));
 }
 
-static void end_sysint1_irq(unsigned int irq)
-{
-        if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
-                icu1_set(MSYSINT1REG, 1 << SYSINT1_IRQ_TO_PIN(irq));
-}
-
 static struct irq_chip sysint1_irq_type = {
         .typename       = "SYSINT1",
         .ack            = disable_sysint1_irq,
         .mask           = disable_sysint1_irq,
         .mask_ack       = disable_sysint1_irq,
         .unmask         = enable_sysint1_irq,
-        .end            = end_sysint1_irq,
 };
 
 static void disable_sysint2_irq(unsigned int irq)
@@ -452,19 +445,12 @@ static void enable_sysint2_irq(unsigned int irq)
         icu2_set(MSYSINT2REG, 1 << SYSINT2_IRQ_TO_PIN(irq));
 }
 
-static void end_sysint2_irq(unsigned int irq)
-{
-        if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
-                icu2_set(MSYSINT2REG, 1 << SYSINT2_IRQ_TO_PIN(irq));
-}
-
 static struct irq_chip sysint2_irq_type = {
         .typename       = "SYSINT2",
         .ack            = disable_sysint2_irq,
         .mask           = disable_sysint2_irq,
         .mask_ack       = disable_sysint2_irq,
         .unmask         = enable_sysint2_irq,
-        .end            = end_sysint2_irq,
 };
 
 static inline int set_sysint1_assign(unsigned int irq, unsigned char assign)