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[PATCH] uml: make hw_controller_type->release exist only for archs needing it

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With Chris Wedgwood <cw@f00f.org>

As suggested by Chris, we can make the "just added" method ->release
conditional to UML only (better: to archs requesting it, i.e.  only UML
currently), so that other archs don't get this unneeded crud, and if UML
won't need it any more we can kill this.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
CC: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Paolo 'Blaisorblade' Giarrusso 2005-06-21 17:16:24 -07:00 committed by Linus Torvalds
parent faec1e99ba
commit b77d6adc92
3 changed files with 12 additions and 0 deletions
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5
arch/um/Kconfig
View File

@ -35,6 +35,11 @@ config GENERIC_CALIBRATE_DELAY
bool
default y
# Used in kernel/irq/manage.c and include/linux/irq.h
config IRQ_RELEASE_METHOD
bool
default y
menu "UML-specific options"
config MODE_TT

3
include/linux/irq.h
View File

@ -47,7 +47,10 @@ struct hw_interrupt_type {
void (*ack)(unsigned int irq);
void (*end)(unsigned int irq);
void (*set_affinity)(unsigned int irq, cpumask_t dest);
/* Currently used only by UML, might disappear one day.*/
#ifdef CONFIG_IRQ_RELEASE_METHOD
void (*release)(unsigned int irq, void *dev_id);
#endif
};
typedef struct hw_interrupt_type hw_irq_controller;

4
kernel/irq/manage.c
View File

@ -6,6 +6,7 @@
* This file contains driver APIs to the irq subsystem.
*/
#include <linux/config.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/random.h>
@ -256,8 +257,11 @@ void free_irq(unsigned int irq, void *dev_id)
/* Found it - now remove it from the list of entries */
*pp = action->next;
/* Currently used only by UML, might disappear one day.*/
#ifdef CONFIG_IRQ_RELEASE_METHOD
if (desc->handler->release)
desc->handler->release(irq, dev_id);
#endif
if (!desc->action) {
desc->status |= IRQ_DISABLED;