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Fix an issue for architectures where interrupt numbers and vector numbers do not match 1-to-1

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git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4258 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo
2012-01-04 00:14:45 +00:00
parent a2f9aff906
commit 157bef0d3d
9 changed files with 121 additions and 7 deletions
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nuttx/sched/irq_attach.c
+18 -4
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@@ -1,8 +1,8 @@
/****************************************************************************
* sched/irq_attach.c
*
* Copyright (C) 2007-2008, 2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
* Copyright (C) 2007-2008, 2010, 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -91,9 +91,23 @@ int irq_attach(int irq, xcpt_t isr)
state = irqsave();
if (isr == NULL)
{
#ifndef CONFIG_ARCH_NOINTC
up_disable_irq(irq);
/* Disable the interrupt if we can before detaching it. We might
* not be able to do this if: (1) the device does not have a
* centralized interrupt controller (so up_disable_irq() is not
* supported. Or (2) if the device has different number for vector
* numbers and IRQ numbers (in that case, we don't know the correct
* IRQ number to use to disable the interrupt. In those cases, the
* code will just need to be careful that it disables all interrupt
* sources before detaching from the interrupt vector.
*/
#if !defined(CONFIG_ARCH_NOINTC) && !defined(CONFIG_ARCH_VECNOTIRQ)
up_disable_irq(irq);
#endif
/* Detaching the ISR really means re-attaching it to the
* unexpected exception handler.
*/
isr = irq_unexpected_isr;
}