Andrew,
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 at ebshome.net>
-------------- next part --------------
diff -Nru a/arch/ppc/syslib/ppc4xx_pic.c b/arch/ppc/syslib/ppc4xx_pic.c
--- a/arch/ppc/syslib/ppc4xx_pic.c 2005-02-18 12:12:54 -08:00
+++ b/arch/ppc/syslib/ppc4xx_pic.c 2005-02-18 12:12:54 -08:00
@@ -4,7 +4,7 @@
* Interrupt controller driver for PowerPC 4xx-based processors.
*
* Eugene Surovegin <eugene.surovegin at zultys.com> or <ebs at ebshome.net>
- * Copyright (c) 2004 Zultys Technologies
+ * Copyright (c) 2004, 2005 Zultys Technologies
*
* Based on original code by
* Copyright (c) 1999 Grant Erickson <grant at lcse.umn.edu>
@@ -49,6 +49,7 @@
{ \
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) \
