[PATCH 2.6.21-rt2] PowerPC: revert fix for threaded fasteoi IRQ handlers

[Sergei Shtylyov]

Revert the change to the "fasteoi" type chips as after handle_fasteoi_irq() had
been fixed, they've become meaningless (and even dangerous -- as was the case
with Celleb that has been fixed earlier)...

Signed-off-by: Sergei Shtylyov <sshtylyov at ru.mvista.com>

---
The patch in question wasn't even initially accepted but then was erroneously
restored along with the TOD patch.  I've asked to revert it but to no avail,
so here's the formal patch to revert it at last...

 arch/powerpc/platforms/iseries/irq.c  |    1 -
 arch/powerpc/platforms/pseries/xics.c |    2 --
 arch/powerpc/sysdev/mpic.c            |    1 -
 3 files changed, 4 deletions(-)

Index: linux-2.6/arch/powerpc/platforms/iseries/irq.c
===================================================================
--- linux-2.6.orig/arch/powerpc/platforms/iseries/irq.c
+++ linux-2.6/arch/powerpc/platforms/iseries/irq.c
@@ -279,7 +279,6 @@ static struct irq_chip iseries_pic = {
 	.shutdown	= iseries_shutdown_IRQ,
 	.unmask		= iseries_enable_IRQ,
 	.mask		= iseries_disable_IRQ,
-	.ack		= iseries_end_IRQ,
 	.eoi		= iseries_end_IRQ
 };
 
Index: linux-2.6/arch/powerpc/platforms/pseries/xics.c
===================================================================
--- linux-2.6.orig/arch/powerpc/platforms/pseries/xics.c
+++ linux-2.6/arch/powerpc/platforms/pseries/xics.c
@@ -456,7 +456,6 @@ static struct irq_chip xics_pic_direct =
 	.startup = xics_startup,
 	.mask = xics_mask_irq,
 	.unmask = xics_unmask_irq,
-	.ack = xics_eoi_direct,
 	.eoi = xics_eoi_direct,
 	.set_affinity = xics_set_affinity
 };
@@ -467,7 +466,6 @@ static struct irq_chip xics_pic_lpar = {
 	.startup = xics_startup,
 	.mask = xics_mask_irq,
 	.unmask = xics_unmask_irq,
-	.ack = xics_eoi_lpar,
 	.eoi = xics_eoi_lpar,
 	.set_affinity = xics_set_affinity
 };
Index: linux-2.6/arch/powerpc/sysdev/mpic.c
===================================================================
--- linux-2.6.orig/arch/powerpc/sysdev/mpic.c
+++ linux-2.6/arch/powerpc/sysdev/mpic.c
@@ -776,7 +776,6 @@ static int mpic_set_irq_type(unsigned in
 static struct irq_chip mpic_irq_chip = {
 	.mask		= mpic_mask_irq,
 	.unmask		= mpic_unmask_irq,
-	.ack		= mpic_end_irq,
 	.eoi		= mpic_end_irq,
 	.set_type	= mpic_set_irq_type,
 };