[PATCH] genirq: rename desc->handler to desc->chip

This patch-queue improves the generic IRQ layer to be truly generic, by adding
various abstractions and features to it, without impacting existing
functionality.

While the queue can be best described as "fix and improve everything in the
generic IRQ layer that we could think of", and thus it consists of many
smaller features and lots of cleanups, the one feature that stands out most is
the new 'irq chip' abstraction.

The irq-chip abstraction is about describing and coding and IRQ controller
driver by mapping its raw hardware capabilities [and quirks, if needed] in a
straightforward way, without having to think about "IRQ flow"
(level/edge/etc.) type of details.

This stands in contrast with the current 'irq-type' model of genirq
architectures, which 'mixes' raw hardware capabilities with 'flow' details.
The patchset supports both types of irq controller designs at once, and
converts i386 and x86_64 to the new irq-chip design.

As a bonus side-effect of the irq-chip approach, chained interrupt controllers
(master/slave PIC constructs, etc.) are now supported by design as well.

The end result of this patchset intends to be simpler architecture-level code
and more consolidation between architectures.

We reused many bits of code and many concepts from Russell King's ARM IRQ
layer, the merging of which was one of the motivations for this patchset.

This patch:

rename desc->handler to desc->chip.

Originally i did not want to do this, because it's a big patch.  But having
both "desc->handler", "desc->handle_irq" and "action->handler" caused a
large degree of confusion and made the code appear alot less clean than it
truly is.

I have also attempted a dual approach as well by introducing a
desc->chip alias - but that just wasnt robust enough and broke
frequently.

So lets get over with this quickly.  The conversion was done automatically
via scripts and converts all the code in the kernel.

This renaming patch is the first one amongst the patches, so that the
remaining patches can stay flexible and can be merged and split up
without having some big monolithic patch act as a merge barrier.

[akpm@osdl.org: build fix]
[akpm@osdl.org: another build fix]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

9 files changed, 76 insertions, 76 deletions

diff --git a/arch/m32r/kernel/irq.c b/arch/m32r/kernel/irq.c
index a4634b06f675..3841861df6a2 100644
--- a/arch/m32r/kernel/irq.c
+++ b/arch/m32r/kernel/irq.c
@@ -54,7 +54,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
-		seq_printf(p, " %14s", irq_desc[i].handler->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->typename);
 		seq_printf(p, "  %s", action->name);
 
 		for (action=action->next; action; action = action->next)
diff --git a/arch/m32r/kernel/setup_m32104ut.c b/arch/m32r/kernel/setup_m32104ut.c
index 6328e1357a80..f9f56c270195 100644
--- a/arch/m32r/kernel/setup_m32104ut.c
+++ b/arch/m32r/kernel/setup_m32104ut.c
@@ -87,7 +87,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SMC91X)
 	/* INT#0: LAN controller on M32104UT-LAN (SMC91C111)*/
 	irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT0].handler = &m32104ut_irq_type;
+	irq_desc[M32R_IRQ_INT0].chip = &m32104ut_irq_type;
 	irq_desc[M32R_IRQ_INT0].action = 0;
 	irq_desc[M32R_IRQ_INT0].depth = 1;
 	icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD11; /* "H" level sense */
@@ -96,7 +96,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &m32104ut_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &m32104ut_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -105,7 +105,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_SIO
 	/* SIO0_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &m32104ut_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &m32104ut_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = M32R_ICUCR_IEN;
@@ -113,7 +113,7 @@ void __init init_IRQ(void)
 
 	/* SIO0_S : uart send data */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &m32104ut_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &m32104ut_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = M32R_ICUCR_IEN;
diff --git a/arch/m32r/kernel/setup_m32700ut.c b/arch/m32r/kernel/setup_m32700ut.c
index fad1fc99bb27..b6ab00eff580 100644
--- a/arch/m32r/kernel/setup_m32700ut.c
+++ b/arch/m32r/kernel/setup_m32700ut.c
@@ -301,7 +301,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SMC91X)
 	/* INT#0: LAN controller on M32700UT-LAN (SMC91C111)*/
 	irq_desc[M32700UT_LAN_IRQ_LAN].status = IRQ_DISABLED;
-	irq_desc[M32700UT_LAN_IRQ_LAN].handler = &m32700ut_lanpld_irq_type;
+	irq_desc[M32700UT_LAN_IRQ_LAN].chip = &m32700ut_lanpld_irq_type;
 	irq_desc[M32700UT_LAN_IRQ_LAN].action = 0;
 	irq_desc[M32700UT_LAN_IRQ_LAN].depth = 1;	/* disable nested irq */
 	lanpld_icu_data[irq2lanpldirq(M32700UT_LAN_IRQ_LAN)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD02;	/* "H" edge sense */
@@ -310,7 +310,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -318,7 +318,7 @@ void __init init_IRQ(void)
 
 	/* SIO0 : receive */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -326,7 +326,7 @@ void __init init_IRQ(void)
 
 	/* SIO0 : send */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
@@ -334,7 +334,7 @@ void __init init_IRQ(void)
 
 	/* SIO1 : receive */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -342,7 +342,7 @@ void __init init_IRQ(void)
 
 	/* SIO1 : send */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
@@ -350,7 +350,7 @@ void __init init_IRQ(void)
 
 	/* DMA1 : */
 	irq_desc[M32R_IRQ_DMA1].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_DMA1].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_DMA1].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_DMA1].action = 0;
 	irq_desc[M32R_IRQ_DMA1].depth = 1;
 	icu_data[M32R_IRQ_DMA1].icucr = 0;
@@ -359,7 +359,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_PLDSIO
 	/* INT#1: SIO0 Receive on PLD */
 	irq_desc[PLD_IRQ_SIO0_RCV].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_SIO0_RCV].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_SIO0_RCV].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_SIO0_RCV].action = 0;
 	irq_desc[PLD_IRQ_SIO0_RCV].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_SIO0_RCV)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD03;
@@ -367,7 +367,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: SIO0 Send on PLD */
 	irq_desc[PLD_IRQ_SIO0_SND].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_SIO0_SND].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_SIO0_SND].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_SIO0_SND].action = 0;
 	irq_desc[PLD_IRQ_SIO0_SND].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_SIO0_SND)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD03;
@@ -376,7 +376,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: CFC IREQ on PLD */
 	irq_desc[PLD_IRQ_CFIREQ].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFIREQ].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_CFIREQ].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_CFIREQ].action = 0;
 	irq_desc[PLD_IRQ_CFIREQ].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_CFIREQ)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD01;	/* 'L' level sense */
@@ -384,7 +384,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: CFC Insert on PLD */
 	irq_desc[PLD_IRQ_CFC_INSERT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_INSERT].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_CFC_INSERT].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_CFC_INSERT].action = 0;
 	irq_desc[PLD_IRQ_CFC_INSERT].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_CFC_INSERT)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD00;	/* 'L' edge sense */
@@ -392,7 +392,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: CFC Eject on PLD */
 	irq_desc[PLD_IRQ_CFC_EJECT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_EJECT].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_CFC_EJECT].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_CFC_EJECT].action = 0;
 	irq_desc[PLD_IRQ_CFC_EJECT].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_CFC_EJECT)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD02;	/* 'H' edge sense */
@@ -416,7 +416,7 @@ void __init init_IRQ(void)
 	outw(USBCR_OTGS, USBCR); 	/* USBCR: non-OTG */
 
     irq_desc[M32700UT_LCD_IRQ_USB_INT1].status = IRQ_DISABLED;
-    irq_desc[M32700UT_LCD_IRQ_USB_INT1].handler = &m32700ut_lcdpld_irq_type;
+    irq_desc[M32700UT_LCD_IRQ_USB_INT1].chip = &m32700ut_lcdpld_irq_type;
     irq_desc[M32700UT_LCD_IRQ_USB_INT1].action = 0;
     irq_desc[M32700UT_LCD_IRQ_USB_INT1].depth = 1;
     lcdpld_icu_data[irq2lcdpldirq(M32700UT_LCD_IRQ_USB_INT1)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD01;	/* "L" level sense */
@@ -434,7 +434,7 @@ void __init init_IRQ(void)
 	 * INT3# is used for AR
 	 */
 	irq_desc[M32R_IRQ_INT3].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT3].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_INT3].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_INT3].action = 0;
 	irq_desc[M32R_IRQ_INT3].depth = 1;
 	icu_data[M32R_IRQ_INT3].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
diff --git a/arch/m32r/kernel/setup_mappi.c b/arch/m32r/kernel/setup_mappi.c
index 00f253209cb3..c268044185f5 100644
--- a/arch/m32r/kernel/setup_mappi.c
+++ b/arch/m32r/kernel/setup_mappi.c
@@ -86,7 +86,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_NE2000
 	/* INT0 : LAN controller (RTL8019AS) */
 	irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT0].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_INT0].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_INT0].action = 0;
 	irq_desc[M32R_IRQ_INT0].depth = 1;
 	icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
@@ -95,7 +95,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -104,7 +104,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_SIO
 	/* SIO0_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -112,7 +112,7 @@ void __init init_IRQ(void)
 
 	/* SIO0_S : uart send data */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
@@ -120,7 +120,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -128,7 +128,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_S : uart send data */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
@@ -138,7 +138,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_M32R_PCC)
 	/* INT1 : pccard0 interrupt */
 	irq_desc[M32R_IRQ_INT1].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT1].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_INT1].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_INT1].action = 0;
 	irq_desc[M32R_IRQ_INT1].depth = 1;
 	icu_data[M32R_IRQ_INT1].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD00;
@@ -146,7 +146,7 @@ void __init init_IRQ(void)
 
 	/* INT2 : pccard1 interrupt */
 	irq_desc[M32R_IRQ_INT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT2].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_INT2].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_INT2].action = 0;
 	irq_desc[M32R_IRQ_INT2].depth = 1;
 	icu_data[M32R_IRQ_INT2].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD00;
diff --git a/arch/m32r/kernel/setup_mappi2.c b/arch/m32r/kernel/setup_mappi2.c
index eebc9d8b4e72..bd2327d5cca2 100644
--- a/arch/m32r/kernel/setup_mappi2.c
+++ b/arch/m32r/kernel/setup_mappi2.c
@@ -87,7 +87,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SMC91X)
 	/* INT0 : LAN controller (SMC91111) */
 	irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT0].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_INT0].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_INT0].action = 0;
 	irq_desc[M32R_IRQ_INT0].depth = 1;
 	icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
@@ -96,7 +96,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -105,7 +105,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_SIO
 	/* SIO0_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -113,14 +113,14 @@ void __init init_IRQ(void)
 
 	/* SIO0_S : uart send data */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
 	disable_mappi2_irq(M32R_IRQ_SIO0_S);
 	/* SIO1_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -128,7 +128,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_S : uart send data */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
@@ -138,7 +138,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_USB)
 	/* INT1 : USB Host controller interrupt */
 	irq_desc[M32R_IRQ_INT1].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT1].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_INT1].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_INT1].action = 0;
 	irq_desc[M32R_IRQ_INT1].depth = 1;
 	icu_data[M32R_IRQ_INT1].icucr = M32R_ICUCR_ISMOD01;
@@ -147,7 +147,7 @@ void __init init_IRQ(void)
 
 	/* ICUCR40: CFC IREQ */
 	irq_desc[PLD_IRQ_CFIREQ].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFIREQ].handler = &mappi2_irq_type;
+	irq_desc[PLD_IRQ_CFIREQ].chip = &mappi2_irq_type;
 	irq_desc[PLD_IRQ_CFIREQ].action = 0;
 	irq_desc[PLD_IRQ_CFIREQ].depth = 1;	/* disable nested irq */
 	icu_data[PLD_IRQ_CFIREQ].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD01;
@@ -156,7 +156,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_M32R_CFC)
 	/* ICUCR41: CFC Insert */
 	irq_desc[PLD_IRQ_CFC_INSERT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_INSERT].handler = &mappi2_irq_type;
+	irq_desc[PLD_IRQ_CFC_INSERT].chip = &mappi2_irq_type;
 	irq_desc[PLD_IRQ_CFC_INSERT].action = 0;
 	irq_desc[PLD_IRQ_CFC_INSERT].depth = 1;	/* disable nested irq */
 	icu_data[PLD_IRQ_CFC_INSERT].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD00;
@@ -164,7 +164,7 @@ void __init init_IRQ(void)
 
 	/* ICUCR42: CFC Eject */
 	irq_desc[PLD_IRQ_CFC_EJECT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_EJECT].handler = &mappi2_irq_type;
+	irq_desc[PLD_IRQ_CFC_EJECT].chip = &mappi2_irq_type;
 	irq_desc[PLD_IRQ_CFC_EJECT].action = 0;
 	irq_desc[PLD_IRQ_CFC_EJECT].depth = 1;	/* disable nested irq */
 	icu_data[PLD_IRQ_CFC_EJECT].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
diff --git a/arch/m32r/kernel/setup_mappi3.c b/arch/m32r/kernel/setup_mappi3.c
index d2ff021e2d3d..014b51d17505 100644
--- a/arch/m32r/kernel/setup_mappi3.c
+++ b/arch/m32r/kernel/setup_mappi3.c
@@ -87,7 +87,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SMC91X)
 	/* INT0 : LAN controller (SMC91111) */
 	irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT0].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_INT0].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_INT0].action = 0;
 	irq_desc[M32R_IRQ_INT0].depth = 1;
 	icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
@@ -96,7 +96,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -105,7 +105,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_SIO
 	/* SIO0_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -113,14 +113,14 @@ void __init init_IRQ(void)
 
 	/* SIO0_S : uart send data */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
 	disable_mappi3_irq(M32R_IRQ_SIO0_S);
 	/* SIO1_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -128,7 +128,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_S : uart send data */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
@@ -138,7 +138,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_USB)
 	/* INT1 : USB Host controller interrupt */
 	irq_desc[M32R_IRQ_INT1].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT1].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_INT1].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_INT1].action = 0;
 	irq_desc[M32R_IRQ_INT1].depth = 1;
 	icu_data[M32R_IRQ_INT1].icucr = M32R_ICUCR_ISMOD01;
@@ -147,7 +147,7 @@ void __init init_IRQ(void)
 
 	/* CFC IREQ */
 	irq_desc[PLD_IRQ_CFIREQ].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFIREQ].handler = &mappi3_irq_type;
+	irq_desc[PLD_IRQ_CFIREQ].chip = &mappi3_irq_type;
 	irq_desc[PLD_IRQ_CFIREQ].action = 0;
 	irq_desc[PLD_IRQ_CFIREQ].depth = 1;	/* disable nested irq */
 	icu_data[PLD_IRQ_CFIREQ].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD01;
@@ -156,7 +156,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_M32R_CFC)
 	/* ICUCR41: CFC Insert & eject */
 	irq_desc[PLD_IRQ_CFC_INSERT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_INSERT].handler = &mappi3_irq_type;
+	irq_desc[PLD_IRQ_CFC_INSERT].chip = &mappi3_irq_type;
 	irq_desc[PLD_IRQ_CFC_INSERT].action = 0;
 	irq_desc[PLD_IRQ_CFC_INSERT].depth = 1;	/* disable nested irq */
 	icu_data[PLD_IRQ_CFC_INSERT].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD00;
@@ -166,7 +166,7 @@ void __init init_IRQ(void)
 
 	/* IDE IREQ */
 	irq_desc[PLD_IRQ_IDEIREQ].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_IDEIREQ].handler = &mappi3_irq_type;
+	irq_desc[PLD_IRQ_IDEIREQ].chip = &mappi3_irq_type;
 	irq_desc[PLD_IRQ_IDEIREQ].action = 0;
 	irq_desc[PLD_IRQ_IDEIREQ].depth = 1;	/* disable nested irq */
 	icu_data[PLD_IRQ_IDEIREQ].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
diff --git a/arch/m32r/kernel/setup_oaks32r.c b/arch/m32r/kernel/setup_oaks32r.c
index 0e9e63538c0f..ea64831aef7a 100644
--- a/arch/m32r/kernel/setup_oaks32r.c
+++ b/arch/m32r/kernel/setup_oaks32r.c
@@ -85,7 +85,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_NE2000
 	/* INT3 : LAN controller (RTL8019AS) */
 	irq_desc[M32R_IRQ_INT3].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT3].handler = &oaks32r_irq_type;
+	irq_desc[M32R_IRQ_INT3].chip = &oaks32r_irq_type;
 	irq_desc[M32R_IRQ_INT3].action = 0;
 	irq_desc[M32R_IRQ_INT3].depth = 1;
 	icu_data[M32R_IRQ_INT3].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
@@ -94,7 +94,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &oaks32r_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &oaks32r_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -103,7 +103,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_SIO
 	/* SIO0_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &oaks32r_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &oaks32r_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -111,7 +111,7 @@ void __init init_IRQ(void)
 
 	/* SIO0_S : uart send data */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &oaks32r_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &oaks32r_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
@@ -119,7 +119,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &oaks32r_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &oaks32r_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -127,7 +127,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_S : uart send data */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &oaks32r_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &oaks32r_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
diff --git a/arch/m32r/kernel/setup_opsput.c b/arch/m32r/kernel/setup_opsput.c
index 548e8fc7949b..55e8972d455a 100644
--- a/arch/m32r/kernel/setup_opsput.c
+++ b/arch/m32r/kernel/setup_opsput.c
@@ -302,7 +302,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SMC91X)
 	/* INT#0: LAN controller on OPSPUT-LAN (SMC91C111)*/
 	irq_desc[OPSPUT_LAN_IRQ_LAN].status = IRQ_DISABLED;
-	irq_desc[OPSPUT_LAN_IRQ_LAN].handler = &opsput_lanpld_irq_type;
+	irq_desc[OPSPUT_LAN_IRQ_LAN].chip = &opsput_lanpld_irq_type;
 	irq_desc[OPSPUT_LAN_IRQ_LAN].action = 0;
 	irq_desc[OPSPUT_LAN_IRQ_LAN].depth = 1;	/* disable nested irq */
 	lanpld_icu_data[irq2lanpldirq(OPSPUT_LAN_IRQ_LAN)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD02;	/* "H" edge sense */
@@ -311,7 +311,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -319,7 +319,7 @@ void __init init_IRQ(void)
 
 	/* SIO0 : receive */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -327,7 +327,7 @@ void __init init_IRQ(void)
 
 	/* SIO0 : send */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
@@ -335,7 +335,7 @@ void __init init_IRQ(void)
 
 	/* SIO1 : receive */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -343,7 +343,7 @@ void __init init_IRQ(void)
 
 	/* SIO1 : send */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
@@ -351,7 +351,7 @@ void __init init_IRQ(void)
 
 	/* DMA1 : */
 	irq_desc[M32R_IRQ_DMA1].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_DMA1].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_DMA1].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_DMA1].action = 0;
 	irq_desc[M32R_IRQ_DMA1].depth = 1;
 	icu_data[M32R_IRQ_DMA1].icucr = 0;
@@ -360,7 +360,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_PLDSIO
 	/* INT#1: SIO0 Receive on PLD */
 	irq_desc[PLD_IRQ_SIO0_RCV].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_SIO0_RCV].handler = &opsput_pld_irq_type;
+	irq_desc[PLD_IRQ_SIO0_RCV].chip = &opsput_pld_irq_type;
 	irq_desc[PLD_IRQ_SIO0_RCV].action = 0;
 	irq_desc[PLD_IRQ_SIO0_RCV].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_SIO0_RCV)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD03;
@@ -368,7 +368,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: SIO0 Send on PLD */
 	irq_desc[PLD_IRQ_SIO0_SND].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_SIO0_SND].handler = &opsput_pld_irq_type;
+	irq_desc[PLD_IRQ_SIO0_SND].chip = &opsput_pld_irq_type;
 	irq_desc[PLD_IRQ_SIO0_SND].action = 0;
 	irq_desc[PLD_IRQ_SIO0_SND].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_SIO0_SND)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD03;
@@ -378,7 +378,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_M32R_CFC)
 	/* INT#1: CFC IREQ on PLD */
 	irq_desc[PLD_IRQ_CFIREQ].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFIREQ].handler = &opsput_pld_irq_type;
+	irq_desc[PLD_IRQ_CFIREQ].chip = &opsput_pld_irq_type;
 	irq_desc[PLD_IRQ_CFIREQ].action = 0;
 	irq_desc[PLD_IRQ_CFIREQ].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_CFIREQ)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD01;	/* 'L' level sense */
@@ -386,7 +386,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: CFC Insert on PLD */
 	irq_desc[PLD_IRQ_CFC_INSERT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_INSERT].handler = &opsput_pld_irq_type;
+	irq_desc[PLD_IRQ_CFC_INSERT].chip = &opsput_pld_irq_type;
 	irq_desc[PLD_IRQ_CFC_INSERT].action = 0;
 	irq_desc[PLD_IRQ_CFC_INSERT].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_CFC_INSERT)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD00;	/* 'L' edge sense */
@@ -394,7 +394,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: CFC Eject on PLD */
 	irq_desc[PLD_IRQ_CFC_EJECT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_EJECT].handler = &opsput_pld_irq_type;
+	irq_desc[PLD_IRQ_CFC_EJECT].chip = &opsput_pld_irq_type;
 	irq_desc[PLD_IRQ_CFC_EJECT].action = 0;
 	irq_desc[PLD_IRQ_CFC_EJECT].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_CFC_EJECT)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD02;	/* 'H' edge sense */
@@ -420,7 +420,7 @@ void __init init_IRQ(void)
 	outw(USBCR_OTGS, USBCR); 	/* USBCR: non-OTG */
 
     irq_desc[OPSPUT_LCD_IRQ_USB_INT1].status = IRQ_DISABLED;
-    irq_desc[OPSPUT_LCD_IRQ_USB_INT1].handler = &opsput_lcdpld_irq_type;
+    irq_desc[OPSPUT_LCD_IRQ_USB_INT1].chip = &opsput_lcdpld_irq_type;
     irq_desc[OPSPUT_LCD_IRQ_USB_INT1].action = 0;
     irq_desc[OPSPUT_LCD_IRQ_USB_INT1].depth = 1;
     lcdpld_icu_data[irq2lcdpldirq(OPSPUT_LCD_IRQ_USB_INT1)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD01;	/* "L" level sense */
@@ -438,7 +438,7 @@ void __init init_IRQ(void)
 	 * INT3# is used for AR
 	 */
 	irq_desc[M32R_IRQ_INT3].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT3].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_INT3].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_INT3].action = 0;
 	irq_desc[M32R_IRQ_INT3].depth = 1;
 	icu_data[M32R_IRQ_INT3].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
diff --git a/arch/m32r/kernel/setup_usrv.c b/arch/m32r/kernel/setup_usrv.c
index 64be659a23e7..7fa12d8f66b4 100644
--- a/arch/m32r/kernel/setup_usrv.c
+++ b/arch/m32r/kernel/setup_usrv.c
@@ -158,7 +158,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -167,7 +167,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SERIAL_M32R_SIO)
 	/* SIO0_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -175,7 +175,7 @@ void __init init_IRQ(void)
 
 	/* SIO0_S : uart send data */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
@@ -183,7 +183,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -191,7 +191,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_S : uart send data */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
@@ -201,7 +201,7 @@ void __init init_IRQ(void)
 	/* INT#67-#71: CFC#0 IREQ on PLD */
 	for (i = 0 ; i < CONFIG_CFC_NUM ; i++ ) {
 		irq_desc[PLD_IRQ_CF0 + i].status = IRQ_DISABLED;
-		irq_desc[PLD_IRQ_CF0 + i].handler = &m32700ut_pld_irq_type;
+		irq_desc[PLD_IRQ_CF0 + i].chip = &m32700ut_pld_irq_type;
 		irq_desc[PLD_IRQ_CF0 + i].action = 0;
 		irq_desc[PLD_IRQ_CF0 + i].depth = 1;	/* disable nested irq */
 		pld_icu_data[irq2pldirq(PLD_IRQ_CF0 + i)].icucr
@@ -212,7 +212,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
 	/* INT#76: 16552D#0 IREQ on PLD */
 	irq_desc[PLD_IRQ_UART0].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_UART0].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_UART0].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_UART0].action = 0;
 	irq_desc[PLD_IRQ_UART0].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_UART0)].icucr
@@ -221,7 +221,7 @@ void __init init_IRQ(void)
 
 	/* INT#77: 16552D#1 IREQ on PLD */
 	irq_desc[PLD_IRQ_UART1].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_UART1].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_UART1].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_UART1].action = 0;
 	irq_desc[PLD_IRQ_UART1].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_UART1)].icucr
@@ -232,7 +232,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_IDC_AK4524) || defined(CONFIG_IDC_AK4524_MODULE)
 	/* INT#80: AK4524 IREQ on PLD */
 	irq_desc[PLD_IRQ_SNDINT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_SNDINT].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_SNDINT].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_SNDINT].action = 0;
 	irq_desc[PLD_IRQ_SNDINT].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_SNDINT)].icucr