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irq: add remove_irq() for freeing of setup_irq() irqs

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Impact: add new API

This patch adds a remove_irq() function for releasing
interrupts requested with setup_irq().

Without this patch we have no way of releasing such
interrupts since free_irq() today tries to kfree()
the irqaction passed with setup_irq().

Signed-off-by: Magnus Damm <damm@igel.co.jp>
LKML-Reference: <20090312120542.2926.56609.sendpatchset@rx1.opensource.se>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Magnus Damm
2009-03-12 21:05:42 +09:00
committed by Ingo Molnar
parent f8cb22cbb8
commit f21cfb258d
2 changed files with 27 additions and 13 deletions
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1
include/linux/irq.h
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@@ -236,6 +236,7 @@ typedef struct irq_desc irq_desc_t;
#include <asm/hw_irq.h>
extern int setup_irq(unsigned int irq, struct irqaction *new);
extern struct irqaction *remove_irq(unsigned int irq, void *dev_id);
#ifdef CONFIG_GENERIC_HARDIRQS