From: Eugene Surovegin <ebs@ebshome.net>
This patch fixes bug in PPC4xx disable_irq implementation. We need to ACK
parent UIC to prevent false triggering in case IRQ we just disabled was
already pending.
Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/arch/ppc/syslib/ppc4xx_pic.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletion(-)
diff -puN arch/ppc/syslib/ppc4xx_pic.c~ppc32-ppc4xx-pic-ack-parent-uic-in-disable_irq arch/ppc/syslib/ppc4xx_pic.c
--- 25/arch/ppc/syslib/ppc4xx_pic.c~ppc32-ppc4xx-pic-ack-parent-uic-in-disable_irq Fri Feb 18 17:01:31 2005
+++ 25-akpm/arch/ppc/syslib/ppc4xx_pic.c Fri Feb 18 17:01:31 2005
@@ -4,7 +4,7 @@
* Interrupt controller driver for PowerPC 4xx-based processors.
*
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
- * Copyright (c) 2004 Zultys Technologies
+ * Copyright (c) 2004, 2005 Zultys Technologies
*
* Based on original code by
* Copyright (c) 1999 Grant Erickson <grant@lcse.umn.edu>
@@ -49,6 +49,7 @@ static void ppc4xx_uic##n##_disable(unsi
{ \
ppc_cached_irq_mask[n] &= ~IRQ_MASK_UIC##n(irq); \
mtdcr(DCRN_UIC_ER(UIC##n), ppc_cached_irq_mask[n]); \
+ ACK_UIC##n##_PARENT \
} \
\
static void ppc4xx_uic##n##_ack(unsigned int irq) \
_